Today's Message Index:
----------------------
1. 04:18 AM - Re: Re: Vixen Information (Bradley M Webb)
2. 05:17 AM - Re: Re: Vixen Information (john perry)
3. 05:22 AM - Re: Re: ASIs (was Vixen Information) (Paul Seehafer)
4. 05:37 AM - Re: Re: Vixen Information (Paul Seehafer)
5. 05:39 AM - Re: Re: Vixen Information (dave)
6. 05:42 AM - Re: Re: Vixen Information (dave)
7. 06:10 AM - Re: Re: ASIs (was Vixen Information) (Barry West)
8. 06:12 AM - Re: Re: ASIs (was Vixen Information) (Lynn Matteson)
9. 06:18 AM - Re: Re: Vixen Information (Paul Seehafer)
10. 06:35 AM - Re: Re: ASIs (was Vixen Information) (dave)
11. 06:37 AM - Re: Re: Vixen Information (Paul Seehafer)
12. 06:52 AM - Re: Re: ASIs (was Vixen Information) (Paul Seehafer)
13. 07:03 AM - Re: Re: ASIs (Michel Verheughe)
14. 07:31 AM - Re: Re: ASIs (was Vixen Information) (Lynn Matteson)
15. 07:46 AM - Re: Re: Vixen Information (Noel Loveys)
16. 08:25 AM - Re: Re: Vixen Information (Bradley M Webb)
17. 08:27 AM - Re: Re: Vixen Information (Bradley M Webb)
18. 08:37 AM - Re: Re: ASIs (was Vixen Information) (kurt schrader)
19. 08:39 AM - Re: Re: Vixen Information (Bradley M Webb)
20. 08:41 AM - Re: Re: Vixen Information (Randy Daughenbaugh)
21. 08:44 AM - Re: Re: Vixen Information (Noel Loveys)
22. 08:49 AM - Re: Re: ASIs (kurt schrader)
23. 08:50 AM - Re: Re: Vixen Information (flier)
24. 08:56 AM - Re: Re: ASIs (Noel Loveys)
25. 09:35 AM - Re: KingFox Tires (check this wild video) (kitfoxjunky)
26. 09:35 AM - ASI's and Altimeter Calibration (Jim Corner)
27. 09:39 AM - Re: Kitfox List Database (kitfoxjunky)
28. 09:47 AM - Oshkosh trip fuel economy figures/picture (lynnmatt@jps.net)
29. 10:03 AM - Re: KingFox Tires (check this wild video) (dave)
30. 10:05 AM - Re: Oshkosh trip fuel economy figures/picture (kerrjohna@comcast.net)
31. 10:20 AM - Re: Re: ASIs (Michel Verheughe)
32. 10:25 AM - Re: KingFox Tires (check this wild video) (Michel Verheughe)
33. 10:30 AM - Re: Oshkosh trip fuel economy figures/picture (Michel Verheughe)
34. 10:34 AM - Re: Re: ASIs (barry@pgtc.com)
35. 11:04 AM - Rotax 582 Start Current (Guy Buchanan)
36. 11:17 AM - Re: Rotax 582 Start Current (dave)
37. 11:39 AM - Re: Re: ASIs (Lowell Fitt)
38. 01:02 PM - Re: Re: ASIs (Fox5flyer)
39. 02:01 PM - ASI Calculator (Lowell Fitt)
40. 03:17 PM - Re: Rotax 582 Start Current (Tom Jones)
41. 04:00 PM - Re: RPM indicators for Rotax engines. (Torgeir Mortensen)
42. 04:09 PM - Re: Re: ASIs (was Vixen Information) (barry@pgtc.com)
43. 04:18 PM - Re: RPM indicators for Rotax engines. (Torgeir Mortensen)
44. 04:21 PM - Re: Rotax 582 Start Current (Torgeir Mortensen)
45. 04:28 PM - Ski Flyin this Weekend in Central Ontario (dave)
46. 04:32 PM - Re: Re: ASIs (was Vixen Information) (dave)
47. 04:53 PM - Re: Re: ASIs (was Vixen Information) (Torgeir Mortensen)
48. 06:22 PM - Re: Re: Rotax 582 Start Current (Guy Buchanan)
49. 09:07 PM - Re: XLS spreadsheat? (ron schick)
50. 09:15 PM - Re: KingFox Tires (check this wild video) (Lynn Matteson)
51. 10:09 PM - Re: Oshkosh trip fuel economy figures/picture (lynnmatt@jps.net)
Message 1
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| Subject: | Re: Vixen Information |
I recently had a similar problem on my 2. I replaced the nylon tubing to
my
pitot tube and ASI with new stuff. When I went to fly, the ASI was all
over
the place. Apparently, as I was working on the plane, I was folding the
wings back and forth for engine runs and working on it. I found that I
rubbed a hole in the new tubing inside the wing, and it leaked. I
replaced
it again, and now its pretty much dead accurate.
I had a piece of plastic tubing for a pitot cover that was totally
sealed.
When I would slip it on the pitot tube after flying, the ASI would jump
up
to 35 or so, and hold there. Sometimes, when I would show up the next
day,
the weather/pressure change overnight would push the ASI up higher.
Several
people thought my ASI was broken, =91cuz it would read speed tied down.
As
soon as I removed the cover, it would drop to zero.
Check your tubing from the pitot. You can check it by lightly blowing in
the
pitot tube to get a reading on the ASI, and then plug the tube with your
finger. If you can get a good finger seal, the reading on the ASI will
hold,
and not fall off. I actually used a long piece of clear =BC inch PVC
hardware
tubing on the pitot, sat in the cockpit, and plugged it with my tongue.
Worked much better.
I heard that you can also disconnect the ASI side, and put a small
balloon
on the tubing, then blow up the balloon from the pitot tube. If the
balloon
holds pressure, your tubing is good.
Bradley
_____
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Paul
Seehafer
Sent: Wednesday, February 07, 2007 2:50 PM
Subject: Re: Kitfox-List: Re: Vixen Information
Mark,
I've noticed that the airspeed indicator for my Model IV is off by
sometimes
10 - 15 mph (e.g; reading 85-90 when I'm really going 100 mph). Weird
thing
is that it is not consistent at all. I haven't played with it much to
try
and improve it, but I suspect it is because I have one static port
located
midway down the fuselage on the left side. One day I'll disconnect the
static from the instrument and try it that way. It hasn't really
bothered
me much as I have my Gps in the middel of my panel giving me ground
speeds,
and that is rarely less than 100 mph. I'm totally happy with that as
I'm
flying my 912ul Model IV on amphib floats. Incidentally, my Kitfox is
the
fastest 2 seat light floatplane around this part of the country. It
will go
118 mph (tested again and again) flat out wide open on floats. However
the
asi rarely reads much over a hundred. Drives some of the Rans guys nuts
as
before my Kitfox came along they were the light floatplanes to try and
catch.
I'm willing to bet if you test your vixen further you will find you are
flying faster than you think you are. Btw, I think the climb rate is
about
right, but the stall speed sounds slow to me...once again making me
think
your ASI is off like mine.
Paul Seehafer
Model IV - 912ul on Aerocet Amphibs
Wisconsin
ps - Here's a picture of my plane. Look at all the drag....floats,
rigging,
water rudder, bubble doors, no radiator scoop, etc., and it will easily
go
100 mph even with the wheels down and locked and at gross weight. And
I've
flown next to enough other aircraft now to know the speeds my gps tests
results are accurate (asi isn't). Your Vixen just has to be at least as
fast (especially when you start comparing the two aircraft from a
logical
viewpoint).
----- Original Message -----
From: RRTRACK@aol.com
Sent: Sunday, February 04, 2007 9:12 AM
Subject: Re: Kitfox-List: Re: Vixen Information
Hi BOB
Thanks for the reply. All the weight and balance scenarios is near the
rear of the CG limits. I will keep close watch of the CG when loading
the
baggage compartment. My Vixen is disappointing on cruise speeds. It
cruises
at 80 Knots at 5000 RPM indicated. I think about 90 knots at 5500 RPM.
The
struts are faired and it has the fiberglass main landing gear and all
the
wheel pants on. John McBean suggested the tack may be off. I get about
5200
RPM static and it had 430# of static thrust.
What it does do well is land slow. It stalls at 35 MPH with full flaps
and
lands just under 40 MPH. Also the climb rate is around 1100 FPM with a
170#
pilot and 10 gal of fuel. I have the 68" GSC three blade prop. How does
this
compare to your Vixen performance?
Mark
Wisconsin
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matron
href
"http://forums.matronics.com">http://forums.matronics.com
Message 2
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| Subject: | Re: Vixen Information |
Brad
You never ever want to blow into the pito with your mouth , You can over
pressure the airspeed very quickly , use a fan and stand back away from
pito and just blow towards the pito tube from several feet away from the
opening . You never want to seal up the opening attached to the airspeed
and leave it over night you can over pressure it also . it needs to
breathe.
Again this is my opinion and only mine and no one paid me or forced me
under duress to say any of this .
Fly safe fly low fly slow
John Perry
Message 3
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| Subject: | Re: ASIs (was Vixen Information) |
Kurt,
Yes, very possible. I guess of all the things I thought of I never thought
about that one. I am typically having so much fun flying my Kitfox that I
ignore the ASI for the most part (chuckle).
Paul
----- Original Message -----
From: "kurt schrader" <smokey_bear_40220@yahoo.com>
Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
Paul,
Any chance that water got in the static line?
Kurt S.
Message 4
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| Subject: | Re: Vixen Information |
Randy,
Those are custom fibreglass covers that cover my electronic fuel senders
since the sender sits higher than the top surface of the wing. They are
also hinged at the front so I can get at the potentiometers that
calibrate the senders if needed. Fwiw it works pretty well for fuel
levels, but I also use the sight tube as a secondary system for checking
fuel level. I've attached two pics that show where they are located on
the wing in relationship to the fuel caps.
Ironically, these covers do look like the fuel cap fairings others have
used. I haven't installed fuel cap fairings yet, but it's in the works.
I had a conversation once with an aerodynamic engineer about those gas
cap fairings, and he indicated the reason you should have them is not so
much because of the drag of the cap, but the disturbed airflow over that
part of the wing is critical and is probably causing a loss of lift.
That all made sense to me so it is on my list of projects to do yet.
Maybe my gas cap covers are what make my little float plane so much
faster than most other LSA type float planes?? (chuckle)
Paul
----- Original Message -----
From: Randy Daughenbaugh
To: kitfox-list@matronics.com
Sent: Wednesday, February 07, 2007 9:34 PM
Subject: RE: Kitfox-List: Re: Vixen Information
Paul,
What are the Black "bumps" on the top of your wing about on either
side of the cockpit?
Randy - inquiring mind,,,,,
.
ps - Here's a picture of my plane. Look at all the drag....floats,
rigging, water rudder, bubble doors, no radiator scoop, etc., and it
will easily go 100 mph even with the wheels down and locked and at gross
weight. And I've flown next to enough other aircraft now to know the
speeds my gps tests results are accurate (asi isn't). Your Vixen just
has to be at least as fast (especially when you start comparing the two
aircraft from a logical viewpoint).
Message 5
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| Subject: | Re: Vixen Information |
John is right and on top of overspeeding it you will get moisture in
it.
If you have the ASI out you will find 2 ports on the back of it one
labeled P and on S
If you tap your finger on the P port the Needle on gauge just jump a
bit .
I have a flapper on my pitot tube so it rare to get a blockage. If
you have a spot readily assesable like on a windshield pillar where the
line from pitot comes into the cockpit you can cut it and blow it out
there and just puta piece of tygon over top of it again. Same thing
goes for your line to Static port .
Dave
----- Original Message -----
From: john perry
To: kitfox-list@matronics.com
Sent: Thursday, February 08, 2007 8:14 AM
Subject: Re: Kitfox-List: Re: Vixen Information
Brad
You never ever want to blow into the pito with your mouth , You can
over pressure the airspeed very quickly , use a fan and stand back away
from pito and just blow towards the pito tube from several feet away
from the opening . You never want to seal up the opening attached to the
airspeed and leave it over night you can over pressure it also . it
needs to breathe.
Again this is my opinion and only mine and no one paid me or forced me
under duress to say any of this .
Fly safe fly low fly slow
John Perry
Message 6
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| Subject: | Re: Vixen Information |
Paul ,
Very nice !! <<It will go 118 mph (tested again and again) flat out
wide open on floats.>>
My 582 on the same amphibs is about 96 to 98 Wide open Throttle.
My ASI reads high and I have no static port outside. GPS only way to
accurately give consistant speeds.
Dave
----- Original Message -----
From: Paul Seehafer
To: kitfox-list@matronics.com
Sent: Wednesday, February 07, 2007 2:49 PM
Subject: Re: Kitfox-List: Re: Vixen Information
Mark,
I've noticed that the airspeed indicator for my Model IV is off by
sometimes 10 - 15 mph (e.g; reading 85-90 when I'm really going 100
mph). Weird thing is that it is not consistent at all. I haven't
played with it much to try and improve it, but I suspect it is because I
have one static port located midway down the fuselage on the left side.
One day I'll disconnect the static from the instrument and try it that
way. It hasn't really bothered me much as I have my Gps in the middel
of my panel giving me ground speeds, and that is rarely less than 100
mph. I'm totally happy with that as I'm flying my 912ul Model IV on
amphib floats. Incidentally, my Kitfox is the fastest 2 seat light
floatplane around this part of the country. It will go 118 mph (tested
again and again) flat out wide open on floats. However the asi rarely
reads much over a hundred. Drives some of the Rans guys nuts as before
my Kitfox came along they were the light floatplanes to try and catch.
I'm willing to bet if you test your vixen further you will find you
are flying faster than you think you are. Btw, I think the climb rate
is about right, but the stall speed sounds slow to me...once again
making me think your ASI is off like mine.
Paul Seehafer
Model IV - 912ul on Aerocet Amphibs
Wisconsin
ps - Here's a picture of my plane. Look at all the drag....floats,
rigging, water rudder, bubble doors, no radiator scoop, etc., and it
will easily go 100 mph even with the wheels down and locked and at gross
weight. And I've flown next to enough other aircraft now to know the
speeds my gps tests results are accurate (asi isn't). Your Vixen just
has to be at least as fast (especially when you start comparing the two
aircraft from a logical viewpoint).
----- Original Message -----
From: RRTRACK@aol.com
To: kitfox-list@matronics.com
Sent: Sunday, February 04, 2007 9:12 AM
Subject: Re: Kitfox-List: Re: Vixen Information
Hi BOB
Thanks for the reply. All the weight and balance scenarios is near
the rear of the CG limits. I will keep close watch of the CG when
loading the baggage compartment. My Vixen is disappointing on cruise
speeds. It cruises at 80 Knots at 5000 RPM indicated. I think about 90
knots at 5500 RPM. The struts are faired and it has the fiberglass main
landing gear and all the wheel pants on. John McBean suggested the tack
may be off. I get about 5200 RPM static and it had 430# of static
thrust.
What it does do well is land slow. It stalls at 35 MPH with full
flaps and lands just under 40 MPH. Also the climb rate is around 1100
FPM with a 170# pilot and 10 gal of fuel. I have the 68" GSC three blade
prop. How does this compare to your Vixen performance?
Mark
Wisconsin
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matron
href="http://forums.matronics.com">http://forums.matronics.com
Message 7
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| Subject: | Re: ASIs (was Vixen Information) |
My airspeed indicator is just the opposite, it is accurate up to about 90
mph then starts reading too high, as much as 15 mph at 100 (which has to be
while decending.)
I operated without a static port, just using the pressure behind the panel,
until recently when I put a static port in anticipating installation of a
transponder, but this seemed to have no effect. I will learn more when the
system is calibrated and certified. But there must be something wrong with
the airspeed indicator. Does anyone have any suggestions?
Barry West
----- Original Message -----
From: "kurt schrader" <smokey_bear_40220@yahoo.com>
Sent: Wednesday, February 07, 2007 7:03 PM
Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
> <smokey_bear_40220@yahoo.com>
>
> Paul,
>
> Any chance that water got in the static line?
>
> Kurt S.
>
> --- Paul Seehafer <av8rps@tznet.com> wrote:
>
>> Mark,
>>
>> I've noticed that the airspeed indicator for my
>> Model IV is off by sometimes 10 - 15 mph (e.g;
>> reading 85-90 when I'm really going 100 mph). Weird
>> thing is that it is not consistent at all......
>
>
> 8:00? 8:25? 8:40? Find a flick in no time
> with the Yahoo! Search movie showtime shortcut.
> http://tools.search.yahoo.com/shortcuts/#news
>
>
>
Message 8
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| Subject: | Re: ASIs (was Vixen Information) |
I never got an answer to my personal email to you, so I'll ask again
here...what are the black objects on the top of your Vixen wing?
Another lister asked the same question, and I didn't see an answer
there either.
Lynn
do not archive
On Feb 8, 2007, at 8:17 AM, Paul Seehafer wrote:
>
> Kurt,
>
> Yes, very possible. I guess of all the things I thought of I never
> thought about that one. I am typically having so much fun flying
> my Kitfox that I ignore the ASI for the most part (chuckle).
>
> Paul
>
>
> ----- Original Message ----- From: "kurt schrader"
> <smokey_bear_40220@yahoo.com>
> Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
>
> Paul,
>
> Any chance that water got in the static line?
>
> Kurt S.
>
>
Message 9
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| Subject: | Re: Vixen Information |
Bradley,
Very good information. Thank you, thank you! I will definitely be testing
mine per your instructions. That all makes good sense to do.
What's funny is how my readings are not consistent. Here's a few pics that
show what I'm talking about. Check the GPS groundspeed vs the ASI. (HInt;
two of the photos were taken with 15-20 mph tailwinds - just for grins...and
fwiw on the return flight I had a gs of 93 mph avg with a little more
throttle required) With the exception of those two photos the winds were
for the most part calm.
Btw - Yeah, I know my EGT is not operational - bad connector that keeps
coming loose. And my panel labeling is still a work in progress :-)
Paul
----- Original Message -----
From: Bradley M Webb
To: kitfox-list@matronics.com
Sent: Thursday, February 08, 2007 6:14 AM
Subject: RE: Kitfox-List: Re: Vixen Information
I recently had a similar problem on my 2. I replaced the nylon tubing to
my pitot tube and ASI with new stuff. When I went to fly, the ASI was all
over the place. Apparently, as I was working on the plane, I was folding the
wings back and forth for engine runs and working on it. I found that I
rubbed a hole in the new tubing inside the wing, and it leaked. I replaced
it again, and now its pretty much dead accurate.
I had a piece of plastic tubing for a pitot cover that was totally sealed.
When I would slip it on the pitot tube after flying, the ASI would jump up
to 35 or so, and hold there. Sometimes, when I would show up the next day,
the weather/pressure change overnight would push the ASI up higher. Several
people thought my ASI was broken, 'cuz it would read speed tied down. As
soon as I removed the cover, it would drop to zero.
Check your tubing from the pitot. You can check it by lightly blowing in
the pitot tube to get a reading on the ASI, and then plug the tube with your
finger. If you can get a good finger seal, the reading on the ASI will hold,
and not fall off. I actually used a long piece of clear inch PVC hardware
tubing on the pitot, sat in the cockpit, and plugged it with my tongue.
Worked much better.
I heard that you can also disconnect the ASI side, and put a small balloon
on the tubing, then blow up the balloon from the pitot tube. If the balloon
holds pressure, your tubing is good.
Bradley
------------------------------------------------------------------------------
Message 10
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| Subject: | Re: ASIs (was Vixen Information) |
Barry, Mine reads at 90MPH TAS about 105 +
I have no external static port.
Now If i open the door the ASI drops to about 95 mph
Then if I stick my arm out the door fully exteneded and my ASI reads about
90 mph.
I guess you could say that doing this makes the cabin at th proper pressure
as it would be with a proper external static port.
At lower speeds 75 mph or les it seems fairly accurate to about 45 mph then
the ASI reads low.
Movies here http://www.cfisher.com
Dave
----- Original Message -----
From: "Barry West" <barry@pgtc.com>
Sent: Thursday, February 08, 2007 9:09 AM
Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
> My airspeed indicator is just the opposite, it is accurate up to about 90
> mph then starts reading too high, as much as 15 mph at 100 (which has to
> be while decending.)
>
> I operated without a static port, just using the pressure behind the
> panel, until recently when I put a static port in anticipating
> installation of a transponder, but this seemed to have no effect. I will
> learn more when the system is calibrated and certified. But there must be
> something wrong with the airspeed indicator. Does anyone have any
> suggestions?
>
> Barry West
>
> ----- Original Message -----
> From: "kurt schrader" <smokey_bear_40220@yahoo.com>
> To: <kitfox-list@matronics.com>
> Sent: Wednesday, February 07, 2007 7:03 PM
> Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
>
>> <smokey_bear_40220@yahoo.com>
>>
>> Paul,
>>
>> Any chance that water got in the static line?
>>
>> Kurt S.
>>
>> --- Paul Seehafer <av8rps@tznet.com> wrote:
>>
>>> Mark,
>>>
>>> I've noticed that the airspeed indicator for my
>>> Model IV is off by sometimes 10 - 15 mph (e.g;
>>> reading 85-90 when I'm really going 100 mph). Weird
>>> thing is that it is not consistent at all......
>>
>>
>>
>> 8:00? 8:25? 8:40? Find a flick in no time
>> with the Yahoo! Search movie showtime shortcut.
>> http://tools.search.yahoo.com/shortcuts/#news
>>
>>
>>
>>
>
>
>
Message 11
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| Subject: | Re: Vixen Information |
Yeah, just wait until I get my 100 hp 912 on it!!
I think your numbers of 96-98 mph is a good number for a 582 powered
plane on floats. Cubs are all of 75 mph on floats unless they have
large engines. And they aren't even amphibs.
Haven't been doing any flying, too cold around here. How about you?
Paul
----- Original Message -----
From: dave
To: kitfox-list@matronics.com
Sent: Thursday, February 08, 2007 7:39 AM
Subject: Re: Kitfox-List: Re: Vixen Information
Paul ,
Very nice !! <<It will go 118 mph (tested again and again) flat
out wide open on floats.>>
My 582 on the same amphibs is about 96 to 98 Wide open Throttle.
My ASI reads high and I have no static port outside. GPS only way to
accurately give consistant speeds.
Dave
----- Original Message -----
From: Paul Seehafer
To: kitfox-list@matronics.com
Sent: Wednesday, February 07, 2007 2:49 PM
Subject: Re: Kitfox-List: Re: Vixen Information
Mark,
I've noticed that the airspeed indicator for my Model IV is off by
sometimes 10 - 15 mph (e.g; reading 85-90 when I'm really going 100
mph). Weird thing is that it is not consistent at all. I haven't
played with it much to try and improve it, but I suspect it is because I
have one static port located midway down the fuselage on the left side.
One day I'll disconnect the static from the instrument and try it that
way. It hasn't really bothered me much as I have my Gps in the middel
of my panel giving me ground speeds, and that is rarely less than 100
mph. I'm totally happy with that as I'm flying my 912ul Model IV on
amphib floats. Incidentally, my Kitfox is the fastest 2 seat light
floatplane around this part of the country. It will go 118 mph (tested
again and again) flat out wide open on floats. However the asi rarely
reads much over a hundred. Drives some of the Rans guys nuts as before
my Kitfox came along they were the light floatplanes to try and catch.
I'm willing to bet if you test your vixen further you will find you
are flying faster than you think you are. Btw, I think the climb rate
is about right, but the stall speed sounds slow to me...once again
making me think your ASI is off like mine.
Paul Seehafer
Model IV - 912ul on Aerocet Amphibs
Wisconsin
ps - Here's a picture of my plane. Look at all the drag....floats,
rigging, water rudder, bubble doors, no radiator scoop, etc., and it
will easily go 100 mph even with the wheels down and locked and at gross
weight. And I've flown next to enough other aircraft now to know the
speeds my gps tests results are accurate (asi isn't). Your Vixen just
has to be at least as fast (especially when you start comparing the two
aircraft from a logical viewpoint).
----- Original Message -----
From: RRTRACK@aol.com
To: kitfox-list@matronics.com
Sent: Sunday, February 04, 2007 9:12 AM
Subject: Re: Kitfox-List: Re: Vixen Information
Hi BOB
Thanks for the reply. All the weight and balance scenarios is
near the rear of the CG limits. I will keep close watch of the CG when
loading the baggage compartment. My Vixen is disappointing on cruise
speeds. It cruises at 80 Knots at 5000 RPM indicated. I think about 90
knots at 5500 RPM. The struts are faired and it has the fiberglass main
landing gear and all the wheel pants on. John McBean suggested the tack
may be off. I get about 5200 RPM static and it had 430# of static
thrust.
What it does do well is land slow. It stalls at 35 MPH with full
flaps and lands just under 40 MPH. Also the climb rate is around 1100
FPM with a 170# pilot and 10 gal of fuel. I have the 68" GSC three blade
prop. How does this compare to your Vixen performance?
Mark
Wisconsin
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matron
href="http://forums.matronics.com">http://forums.matronics.com
Message 12
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| Subject: | Re: ASIs (was Vixen Information) |
Sorry Lynn. I resonded twice last night but the e-mails kept bouncing back.
I tried again just a few minutes ago to resend. Let me know if it doesn't
work. Btw your e-mails are coming to me just fine.
If you don't get my e-mail I did respond to the lists questions in detail as
well. Should show up on the list soon I would think? (with my internet
provider one never knows?)
Ok ok, to satisfy your curiousity, those covers are for my dual on board
radar units....don't all kitfoxes have these? Alright, just kidding....
Paul Seehafer
Do not archive
----- Original Message -----
From: "Lynn Matteson" <lynnmatt@jps.net>
Sent: Thursday, February 08, 2007 8:12 AM
Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
> I never got an answer to my personal email to you, so I'll ask again
> here...what are the black objects on the top of your Vixen wing? Another
> lister asked the same question, and I didn't see an answer there either.
>
> Lynn
> do not archive
> On Feb 8, 2007, at 8:17 AM, Paul Seehafer wrote:
>
>>
>> Kurt,
>>
>> Yes, very possible. I guess of all the things I thought of I never
>> thought about that one. I am typically having so much fun flying my
>> Kitfox that I ignore the ASI for the most part (chuckle).
>>
>> Paul
>>
>>
>> ----- Original Message ----- From: "kurt schrader"
>> <smokey_bear_40220@yahoo.com>
>> Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>>
>>
>> Paul,
>>
>> Any chance that water got in the static line?
>>
>> Kurt S.
>>
>>
>>
>>
>>
>
>
>
Message 13
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|
> From: Barry West [barry@pgtc.com]
> But there must be something wrong with
> the airspeed indicator. Does anyone have any suggestions?
A way to find out if it is the ASI or the static port (or cabin pressure) is to
fly in a radar controlled zone with your transponder mode C then ask for altitude
check. If the given altitude is the same as what you can read on your altimeter,
the error is a under or over pressure in the static port (or cabin). If
not, then your ASI needs calibration.
Cheers,
Michel
<pre><b><font size=2 color="#000000" face="courier new,courier">
</b></font></pre></body></html>
Message 14
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| Subject: | Re: ASIs (was Vixen Information) |
Thanks, Paul, I got all the info now and your emails, and all the
pictures. Yeah, I have radar units on mine just in case those
Washington, DC jets get a little too close (kick in the other
cylinders and leave 'em : ) )
Lynn
do not archive
On Feb 8, 2007, at 9:49 AM, Paul Seehafer wrote:
>
> Sorry Lynn. I resonded twice last night but the e-mails kept
> bouncing back. I tried again just a few minutes ago to resend. Let
> me know if it doesn't work. Btw your e-mails are coming to me just
> fine.
>
> If you don't get my e-mail I did respond to the lists questions in
> detail as well. Should show up on the list soon I would think?
> (with my internet provider one never knows?)
>
> Ok ok, to satisfy your curiousity, those covers are for my dual on
> board radar units....don't all kitfoxes have these? Alright, just
> kidding....
>
> Paul Seehafer
>
> Do not archive
>
> ----- Original Message ----- From: "Lynn Matteson" <lynnmatt@jps.net>
> To: <kitfox-list@matronics.com>
> Sent: Thursday, February 08, 2007 8:12 AM
> Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
>
>>
>> I never got an answer to my personal email to you, so I'll ask
>> again here...what are the black objects on the top of your Vixen
>> wing? Another lister asked the same question, and I didn't see an
>> answer there either.
>>
>> Lynn
>> do not archive
>> On Feb 8, 2007, at 8:17 AM, Paul Seehafer wrote:
>>
>>> <av8rps@tznet.com>
>>>
>>> Kurt,
>>>
>>> Yes, very possible. I guess of all the things I thought of I
>>> never thought about that one. I am typically having so much fun
>>> flying my Kitfox that I ignore the ASI for the most part (chuckle).
>>>
>>> Paul
>>>
>>>
>>> ----- Original Message ----- From: "kurt schrader"
>>> <smokey_bear_40220@yahoo.com>
>>> Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>>>
>>>
>>> Paul,
>>>
>>> Any chance that water got in the static line?
>>>
>>> Kurt S.
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>
>
Message 15
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| Subject: | Re: Vixen Information |
I'd try the balloon test but don't ask me to try to regulate a low
enough
pitot pressure with my warm damp breath on my expensive ASI.
Better still find a friend who has access to a Barfield tester.
Noel
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Bradley M
Webb
Sent: Thursday, February 08, 2007 8:44 AM
Subject: RE: Kitfox-List: Re: Vixen Information
I recently had a similar problem on my 2. I replaced the nylon tubing to
my
pitot tube and ASI with new stuff. When I went to fly, the ASI was all
over
the place. Apparently, as I was working on the plane, I was folding the
wings back and forth for engine runs and working on it. I found that I
rubbed a hole in the new tubing inside the wing, and it leaked. I
replaced
it again, and now its pretty much dead accurate.
I had a piece of plastic tubing for a pitot cover that was totally
sealed.
When I would slip it on the pitot tube after flying, the ASI would jump
up
to 35 or so, and hold there. Sometimes, when I would show up the next
day,
the weather/pressure change overnight would push the ASI up higher.
Several
people thought my ASI was broken, =91cuz it would read speed tied down.
As
soon as I removed the cover, it would drop to zero.
Check your tubing from the pitot. You can check it by lightly blowing in
the
pitot tube to get a reading on the ASI, and then plug the tube with your
finger. If you can get a good finger seal, the reading on the ASI will
hold,
and not fall off. I actually used a long piece of clear =BC inch PVC
hardware
tubing on the pitot, sat in the cockpit, and plugged it with my tongue.
Worked much better.
I heard that you can also disconnect the ASI side, and put a small
balloon
on the tubing, then blow up the balloon from the pitot tube. If the
balloon
holds pressure, your tubing is good.
Bradley
_____
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Paul
Seehafer
Sent: Wednesday, February 07, 2007 2:50 PM
Subject: Re: Kitfox-List: Re: Vixen Information
Mark,
I've noticed that the airspeed indicator for my Model IV is off by
sometimes
10 - 15 mph (e.g; reading 85-90 when I'm really going 100 mph). Weird
thing
is that it is not consistent at all. I haven't played with it much to
try
and improve it, but I suspect it is because I have one static port
located
midway down the fuselage on the left side. One day I'll disconnect the
static from the instrument and try it that way. It hasn't really
bothered
me much as I have my Gps in the middel of my panel giving me ground
speeds,
and that is rarely less than 100 mph. I'm totally happy with that as
I'm
flying my 912ul Model IV on amphib floats. Incidentally, my Kitfox is
the
fastest 2 seat light floatplane around this part of the country. It
will go
118 mph (tested again and again) flat out wide open on floats. However
the
asi rarely reads much over a hundred. Drives some of the Rans guys nuts
as
before my Kitfox came along they were the light floatplanes to try and
catch.
I'm willing to bet if you test your vixen further you will find you are
flying faster than you think you are. Btw, I think the climb rate is
about
right, but the stall speed sounds slow to me...once again making me
think
your ASI is off like mine.
Paul Seehafer
Model IV - 912ul on Aerocet Amphibs
Wisconsin
ps - Here's a picture of my plane. Look at all the drag....floats,
rigging,
water rudder, bubble doors, no radiator scoop, etc., and it will easily
go
100 mph even with the wheels down and locked and at gross weight. And
I've
flown next to enough other aircraft now to know the speeds my gps tests
results are accurate (asi isn't). Your Vixen just has to be at least as
fast (especially when you start comparing the two aircraft from a
logical
viewpoint).
----- Original Message -----
From: RRTRACK@aol.com
Sent: Sunday, February 04, 2007 9:12 AM
Subject: Re: Kitfox-List: Re: Vixen Information
Hi BOB
Thanks for the reply. All the weight and balance scenarios is near the
rear of the CG limits. I will keep close watch of the CG when loading
the
baggage compartment. My Vixen is disappointing on cruise speeds. It
cruises
at 80 Knots at 5000 RPM indicated. I think about 90 knots at 5500 RPM.
The
struts are faired and it has the fiberglass main landing gear and all
the
wheel pants on. John McBean suggested the tack may be off. I get about
5200
RPM static and it had 430# of static thrust.
What it does do well is land slow. It stalls at 35 MPH with full flaps
and
lands just under 40 MPH. Also the climb rate is around 1100 FPM with a
170#
pilot and 10 gal of fuel. I have the 68" GSC three blade prop. How does
this
compare to your Vixen performance?
Mark
Wisconsin
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matron
href
"http://forums.matronics.com">http://forums.matronics.com
Message 16
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| Subject: | Re: Vixen Information |
The balloon test I got from the RV builders. Seems to be a good way to
see
if the lines are sealed up. Visual inspection of the tube isn=92t good
enough.
Bradley
_____
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Noel Loveys
Sent: Thursday, February 08, 2007 10:44 AM
Subject: RE: Kitfox-List: Re: Vixen Information
I'd try the balloon test but don't ask me to try to regulate a low
enough
pitot pressure with my warm damp breath on my expensive ASI.
Better still find a friend who has access to a Barfield tester.
Noel
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Bradley M
Webb
Sent: Thursday, February 08, 2007 8:44 AM
Subject: RE: Kitfox-List: Re: Vixen Information
I recently had a similar problem on my 2. I replaced the nylon tubing to
my
pitot tube and ASI with new stuff. When I went to fly, the ASI was all
over
the place. Apparently, as I was working on the plane, I was folding the
wings back and forth for engine runs and working on it. I found that I
rubbed a hole in the new tubing inside the wing, and it leaked. I
replaced
it again, and now its pretty much dead accurate.
I had a piece of plastic tubing for a pitot cover that was totally
sealed.
When I would slip it on the pitot tube after flying, the ASI would jump
up
to 35 or so, and hold there. Sometimes, when I would show up the next
day,
the weather/pressure change overnight would push the ASI up higher.
Several
people thought my ASI was broken, =91cuz it would read speed tied down.
As
soon as I removed the cover, it would drop to zero.
Check your tubing from the pitot. You can check it by lightly blowing in
the
pitot tube to get a reading on the ASI, and then plug the tube with your
finger. If you can get a good finger seal, the reading on the ASI will
hold,
and not fall off. I actually used a long piece of clear =BC inch PVC
hardware
tubing on the pitot, sat in the cockpit, and plugged it with my tongue.
Worked much better.
I heard that you can also disconnect the ASI side, and put a small
balloon
on the tubing, then blow up the balloon from the pitot tube. If the
balloon
holds pressure, your tubing is good.
Bradley
_____
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Paul
Seehafer
Sent: Wednesday, February 07, 2007 2:50 PM
Subject: Re: Kitfox-List: Re: Vixen Information
Mark,
I've noticed that the airspeed indicator for my Model IV is off by
sometimes
10 - 15 mph (e.g; reading 85-90 when I'm really going 100 mph). Weird
thing
is that it is not consistent at all. I haven't played with it much to
try
and improve it, but I suspect it is because I have one static port
located
midway down the fuselage on the left side. One day I'll disconnect the
static from the instrument and try it that way. It hasn't really
bothered
me much as I have my Gps in the middel of my panel giving me ground
speeds,
and that is rarely less than 100 mph. I'm totally happy with that as
I'm
flying my 912ul Model IV on amphib floats. Incidentally, my Kitfox is
the
fastest 2 seat light floatplane around this part of the country. It
will go
118 mph (tested again and again) flat out wide open on floats. However
the
asi rarely reads much over a hundred. Drives some of the Rans guys nuts
as
before my Kitfox came along they were the light floatplanes to try and
catch.
I'm willing to bet if you test your vixen further you will find you are
flying faster than you think you are. Btw, I think the climb rate is
about
right, but the stall speed sounds slow to me...once again making me
think
your ASI is off like mine.
Paul Seehafer
Model IV - 912ul on Aerocet Amphibs
Wisconsin
ps - Here's a picture of my plane. Look at all the drag....floats,
rigging,
water rudder, bubble doors, no radiator scoop, etc., and it will easily
go
100 mph even with the wheels down and locked and at gross weight. And
I've
flown next to enough other aircraft now to know the speeds my gps tests
results are accurate (asi isn't). Your Vixen just has to be at least as
fast (especially when you start comparing the two aircraft from a
logical
viewpoint).
----- Original Message -----
From: RRTRACK@aol.com
Sent: Sunday, February 04, 2007 9:12 AM
Subject: Re: Kitfox-List: Re: Vixen Information
Hi BOB
Thanks for the reply. All the weight and balance scenarios is near the
rear of the CG limits. I will keep close watch of the CG when loading
the
baggage compartment. My Vixen is disappointing on cruise speeds. It
cruises
at 80 Knots at 5000 RPM indicated. I think about 90 knots at 5500 RPM.
The
struts are faired and it has the fiberglass main landing gear and all
the
wheel pants on. John McBean suggested the tack may be off. I get about
5200
RPM static and it had 430# of static thrust.
What it does do well is land slow. It stalls at 35 MPH with full flaps
and
lands just under 40 MPH. Also the climb rate is around 1100 FPM with a
170#
pilot and 10 gal of fuel. I have the 68" GSC three blade prop. How does
this
compare to your Vixen performance?
Mark
Wisconsin
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matron
href
"http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matron
href
"http://forums.matronics.com">http://forums.matronics.com
Message 17
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| Subject: | Re: Vixen Information |
My readings were not at all consistent either. It'd go from zero to 40, back
again, then to 60, etc. I knew what it was after a few minutes of looking at
it. The instrument was brand new.
Now, on a calm day, my ASI is matched perfectly to the GPS. I'm happy with
it.
Bradley
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Paul Seehafer
Sent: Thursday, February 08, 2007 9:12 AM
Subject: RE: Kitfox-List: Re: Vixen Information
Bradley,
Very good information. Thank you, thank you! I will definitely be testing
mine per your instructions. That all makes good sense to do.
What's funny is how my readings are not consistent. Here's a few pics that
show what I'm talking about. Check the GPS groundspeed vs the ASI. (HInt;
two of the photos were taken with 15-20 mph tailwinds - just for grins...and
fwiw on the return flight I had a gs of 93 mph avg with a little more
throttle required) With the exception of those two photos the winds were
for the most part calm.
Btw - Yeah, I know my EGT is not operational - bad connector that keeps
coming loose. And my panel labeling is still a work in progress :-)
Paul
----- Original Message -----
From: Bradley M Webb
To: kitfox-list@matronics.com
Sent: Thursday, February 08, 2007 6:14 AM
Subject: RE: Kitfox-List: Re: Vixen Information
I recently had a similar problem on my 2. I replaced the nylon tubing to
my pitot tube and ASI with new stuff. When I went to fly, the ASI was all
over the place. Apparently, as I was working on the plane, I was folding the
wings back and forth for engine runs and working on it. I found that I
rubbed a hole in the new tubing inside the wing, and it leaked. I replaced
it again, and now its pretty much dead accurate.
I had a piece of plastic tubing for a pitot cover that was totally sealed.
When I would slip it on the pitot tube after flying, the ASI would jump up
to 35 or so, and hold there. Sometimes, when I would show up the next day,
the weather/pressure change overnight would push the ASI up higher. Several
people thought my ASI was broken, 'cuz it would read speed tied down. As
soon as I removed the cover, it would drop to zero.
Check your tubing from the pitot. You can check it by lightly blowing in
the pitot tube to get a reading on the ASI, and then plug the tube with your
finger. If you can get a good finger seal, the reading on the ASI will hold,
and not fall off. I actually used a long piece of clear inch PVC hardware
tubing on the pitot, sat in the cockpit, and plugged it with my tongue.
Worked much better.
I heard that you can also disconnect the ASI side, and put a small balloon
on the tubing, then blow up the balloon from the pitot tube. If the balloon
holds pressure, your tubing is good.
Bradley
----------------------------------------------------------------------------
--
Message 18
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| Subject: | Re: ASIs (was Vixen Information) |
Paul,
Being from Wis myself, I know what you mean with fun
somehow beating out small problems like jittery ASI's.
I am sure you fly mostly by feel anyway, so it is not
a big problem. And winter is just when you have fun
without bugs....
I agree with the leaky line idea too. Be careful
blowing in the pitot. Very little pressure will bust
the ASI. I used a looped tube at the pitot instead
for this. Just add a little water in the lower loop
and raise a few inches to pressure the line.
On mine, I ran the pitot line down the left doorpost
and put a "T" about 6" from the bottom. The "T" runs
up to the ASI. I can see thru the line enough to
check for water and drain out the sealed bottom, if
necessary. It can hold a bit before it ever
interferes.
For the static line, I put a 90 elbow just inside the
plane and ran the line up and over to the other side
in a loop before going forward. If any water gets in,
it doesn't get past the 90 and drains back out.
All that worked fine until I added my radiator scoop.
That seems to have changed the airflow over my static
port and changed my accuracy. :-(
I did make the static port with a center nylon bolt in
it. This bolt is drilled for airflow and slotted so
that I can screw it in or out to slightly change the
distance from the fabric that I draw static pressure.
Havent tried changing that yet for effect. Maybe
overkill. But I liked the building process enough to
enjoy inventing....
Kurt S. S-5
--- Paul Seehafer <av8rps@tznet.com> wrote:
> Kurt,
>
> Yes, very possible. I guess of all the things I
> thought of I never thought
> about that one. I am typically having so much fun
> flying my Kitfox that I
> ignore the ASI for the most part (chuckle).
>
> Paul
Sucker-punch spam with award-winning protection.
Try the free Yahoo! Mail Beta.
Message 19
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| Subject: | Re: Vixen Information |
Well, I disagree. That's why I used a long tube to sit in the seat while
doing it, so I can see the ASI. It's really easy to only blow only hard
enough to get to 70mph or so. If you start off blowing like the Big Bad
Wolf, then yeah, you can toast it.
The Lancair and RV guys attached tubing to the pitot tube, and roll the
tubing up to slowly increase the pressure. You can then clamp it there and
hold whatever you need. A poor man's tester.
Besides, your method, while there's nothing wrong with doing it that way,
will not tell you if your connections are leaking. That was the point of
doing it my way. Get a little pressure in there, then seal the end with your
tongue (couldn't get a good seal with my finger), and it should stay there
for a long while. After all, the point of the whole system is to get the
instrument to read the pressure at the pitot opening. And since it's not
practical to hang the instrument on the wing, nor the pitot on the panel, a
sealed tubing system is the only way, and any leaks will cause erroneous
readings. That's why there is a calibrated airspeed, vs. indicated.
If your worried about moisture that much, you can dry your mouth out before
doing it, and/or install a moisture bottle in the line (ACS sells one).
I agree about the sealed pitot covers. I now have new ones that have a small
vent in them to keep this from happening. It was just neat to see the
instrument hold the pressure that long.
Bradley
_____
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of john perry
Sent: Thursday, February 08, 2007 8:14 AM
Subject: Re: Kitfox-List: Re: Vixen Information
Brad
You never ever want to blow into the pito with your mouth , You can over
pressure the airspeed very quickly , use a fan and stand back away from
pito and just blow towards the pito tube from several feet away from the
opening . You never want to seal up the opening attached to the airspeed and
leave it over night you can over pressure it also . it needs to breathe.
Again this is my opinion and only mine and no one paid me or forced me under
duress to say any of this .
Fly safe fly low fly slow
John Perry
Message 20
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| Subject: | Re: Vixen Information |
Paul,
Just think how fast you will be when you get the gas cap covers on. ;-)
I did fair my gas caps for the reason you mention.
I really like that first picture that you sent showing a pretty little plane
on floats sitting on the asphalt inside the yard and in front of the garage
in front of the Ford. It just strikes me as incongruous and thus amusing.
Cool!
Randy
Randy,
Those are custom fibreglass covers that cover my electronic fuel senders
since the sender sits higher than the top surface of the wing. They are
also hinged at the front so I can get at the potentiometers that calibrate
the senders if needed. Fwiw it works pretty well for fuel levels, but I
also use the sight tube as a secondary system for checking fuel level. I've
attached two pics that show where they are located on the wing in
relationship to the fuel caps.
Ironically, these covers do look like the fuel cap fairings others have
used. I haven't installed fuel cap fairings yet, but it's in the works. I
had a conversation once with an aerodynamic engineer about those gas cap
fairings, and he indicated the reason you should have them is not so much
because of the drag of the cap, but the disturbed airflow over that part of
the wing is critical and is probably causing a loss of lift. That all made
sense to me so it is on my list of projects to do yet.
Maybe my gas cap covers are what make my little float plane so much faster
than most other LSA type float planes?? (chuckle)
Paul
----- Original Message -----
From: Randy <mailto:rjdaugh@rapidnet.com> Daughenbaugh
Sent: Wednesday, February 07, 2007 9:34 PM
Subject: RE: Kitfox-List: Re: Vixen Information
Paul,
What are the Black "bumps" on the top of your wing about on either side of
the cockpit?
Randy - inquiring mind,,,,,
.
ps - Here's a picture of my plane. Look at all the drag....floats, rigging,
water rudder, bubble doors, no radiator scoop, etc., and it will easily go
100 mph even with the wheels down and locked and at gross weight. And I've
flown next to enough other aircraft now to know the speeds my gps tests
results are accurate (asi isn't). Your Vixen just has to be at least as
fast (especially when you start comparing the two aircraft from a logical
viewpoint).
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronhref
"http://forums.matronics.com">http://forums.matronics.com
Message 21
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| Subject: | Re: Vixen Information |
Paul:
I expect the reason your ASI is non linear is the position of your static
port has a slight vacuum across it at higher speeds. This would cause a
greater differential pressure at speed.
What I would do is install a second static port on the other side of the
plane in a slightly different location. "T" the second static port in with
the original one. This will remove some of the errors some planes
experience while slipping on one side.
As for operating without the static port I have tried this and found the
cabin of my plane has a slight pressure in it at speed this of course gives
me a smaller pressure differential and in turn a lower air speed indication.
If you can find one you could use a static line similar to the one used by
several Aeroncas. It looks like a second pitot tube except the end is
plugged and there are little holes drilled around the sides of the tube.
The advantage of that system is it can be installed at the far end of the
wing strut well away from the prop wash. Tubing could be routed down
inside the strut fairing.
Noel
> -----Original Message-----
> From: owner-kitfox-list-server@matronics.com
> [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of
> Paul Seehafer
> Sent: Thursday, February 08, 2007 10:42 AM
> To: kitfox-list@matronics.com
> Subject: RE: Kitfox-List: Re: Vixen Information
>
>
> Bradley,
>
> Very good information. Thank you, thank you! I will
> definitely be testing
> mine per your instructions. That all makes good sense to do.
>
> What's funny is how my readings are not consistent. Here's a
> few pics that
> show what I'm talking about. Check the GPS groundspeed vs
> the ASI. (HInt;
> two of the photos were taken with 15-20 mph tailwinds - just
> for grins...and
> fwiw on the return flight I had a gs of 93 mph avg with a little more
> throttle required) With the exception of those two photos
> the winds were
> for the most part calm.
>
> Btw - Yeah, I know my EGT is not operational - bad connector
> that keeps
> coming loose. And my panel labeling is still a work in progress :-)
>
> Paul
>
> ----- Original Message -----
> From: Bradley M Webb
> To: kitfox-list@matronics.com
> Sent: Thursday, February 08, 2007 6:14 AM
> Subject: RE: Kitfox-List: Re: Vixen Information
>
>
> I recently had a similar problem on my 2. I replaced the
> nylon tubing to
> my pitot tube and ASI with new stuff. When I went to fly, the
> ASI was all
> over the place. Apparently, as I was working on the plane, I
> was folding the
> wings back and forth for engine runs and working on it. I
> found that I
> rubbed a hole in the new tubing inside the wing, and it
> leaked. I replaced
> it again, and now its pretty much dead accurate.
>
>
>
> I had a piece of plastic tubing for a pitot cover that was
> totally sealed.
> When I would slip it on the pitot tube after flying, the ASI
> would jump up
> to 35 or so, and hold there. Sometimes, when I would show up
> the next day,
> the weather/pressure change overnight would push the ASI up
> higher. Several
> people thought my ASI was broken, 'cuz it would read speed
> tied down. As
> soon as I removed the cover, it would drop to zero.
>
>
>
> Check your tubing from the pitot. You can check it by
> lightly blowing in
> the pitot tube to get a reading on the ASI, and then plug the
> tube with your
> finger. If you can get a good finger seal, the reading on the
> ASI will hold,
> and not fall off. I actually used a long piece of clear
> inch PVC hardware
> tubing on the pitot, sat in the cockpit, and plugged it with
> my tongue.
> Worked much better.
>
>
>
> I heard that you can also disconnect the ASI side, and put
> a small balloon
> on the tubing, then blow up the balloon from the pitot tube.
> If the balloon
> holds pressure, your tubing is good.
>
>
>
> Bradley
>
>
>
>
> --------------------------------------------------------------
> ----------------
>
Message 22
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Hi Michel!
--- Michel Verheughe <michel@online.no> wrote:
> A way to find out if it is the ASI or the static
> port (or cabin pressure) is to fly in a radar
> controlled zone with your transponder mode C then
> ask for altitude check. If the given altitude is the
> same as what you can read on your altimeter, the
> error is a under or over pressure in the static port
> (or cabin). If not, then your ASI needs calibration.
>
> Cheers,
> Michel
This of course depends upon your Mod C being
calibrated and the local controller having adjusted
for the current pressure. Why not ask him for an
airspeed readout while you are at it? Fly cross wind
for the check.
BTW, if you ever looked right as you begin to rotate
for takeoff, the altitude goes down for a moment. It
is due to the pressure building under the wing in
ground effect and getting to the static port, where
ever it is. Changes the ASI too.
All of these pressure gauges are approximate and have
variable accuracy. Never 100% and not = to a fun
meter anyway. But is is "professional" to get close
first, then the heck with it. :-) Fly the thing.
Kurt S.
Now that's room service! Choose from over 150,000 hotels
in 45,000 destinations on Yahoo! Travel to find your fit.
http://farechase.yahoo.com/promo-generic-14795097
Message 23
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| Subject: | Re: Vixen Information |
A much safer way to test is to use a piece of
surgical tubing. Slip one end on the pitot then
start rolling it up from the other and clamp it off
once you get an airspeed reading as a benchmark.
Then see how long it takes to bleed off.
I built a simple ASI tester that uses water in a
column made of clear tubing in a U shape with
surgical tubing to apply pressure as above. The
water column is graduated with airspeed markings.
Regards,
Ted
--- Original Message ---
From: "Bradley M Webb" <bmwebb@cox.net>
Subject: RE: Kitfox-List: Re: Vixen Information
>The balloon test I got from the RV builders. Seems
to be a good way to
>see
>if the lines are sealed up. Visual inspection of the
tube isn=92t good
>enough.
>
>Bradley
>
>
>
> _____
>
>From: owner-kitfox-list-server@matronics.com
>[mailto:owner-kitfox-list-server@matronics.com] On
Behalf Of Noel Loveys
>Sent: Thursday, February 08, 2007 10:44 AM
>To: kitfox-list@matronics.com
>Subject: RE: Kitfox-List: Re: Vixen Information
>
>
>
>I'd try the balloon test but don't ask me to try to
regulate a low
>enough
>pitot pressure with my warm damp breath on my
expensive ASI.
>
>
>
>Better still find a friend who has access to a
Barfield tester.
>
>
>
>
>
>Noel
>
>-----Original Message-----
>From: owner-kitfox-list-server@matronics.com
>[mailto:owner-kitfox-list-server@matronics.com] On
Behalf Of Bradley M
>Webb
>Sent: Thursday, February 08, 2007 8:44 AM
>To: kitfox-list@matronics.com
>Subject: RE: Kitfox-List: Re: Vixen Information
>
>I recently had a similar problem on my 2. I replaced
the nylon tubing to
>my
>pitot tube and ASI with new stuff. When I went to
fly, the ASI was all
>over
>the place. Apparently, as I was working on the
plane, I was folding the
>wings back and forth for engine runs and working on
it. I found that I
>rubbed a hole in the new tubing inside the wing, and
it leaked. I
>replaced
>it again, and now its pretty much dead accurate.
>
>
>
>I had a piece of plastic tubing for a pitot cover
that was totally
>sealed.
>When I would slip it on the pitot tube after flying,
the ASI would jump
>up
>to 35 or so, and hold there. Sometimes, when I would
show up the next
>day,
>the weather/pressure change overnight would push the
ASI up higher.
>Several
>people thought my ASI was broken, =91cuz it would
read speed tied down.
>As
>soon as I removed the cover, it would drop to zero.
>
>
>
>Check your tubing from the pitot. You can check it
by lightly blowing in
>the
>pitot tube to get a reading on the ASI, and then
plug the tube with your
>finger. If you can get a good finger seal, the
reading on the ASI will
>hold,
>and not fall off. I actually used a long piece of
clear =BC inch PVC
>hardware
>tubing on the pitot, sat in the cockpit, and plugged
it with my tongue.
>Worked much better.
>
>
>
>I heard that you can also disconnect the ASI side,
and put a small
>balloon
>on the tubing, then blow up the balloon from the
pitot tube. If the
>balloon
>holds pressure, your tubing is good.
>
>
>
>Bradley
>
>
>
>
> _____
>
>
>From: owner-kitfox-list-server@matronics.com
>[mailto:owner-kitfox-list-server@matronics.com] On
Behalf Of Paul
>Seehafer
>Sent: Wednesday, February 07, 2007 2:50 PM
>To: kitfox-list@matronics.com
>Subject: Re: Kitfox-List: Re: Vixen Information
>
>
>
>Mark,
>
>
>
>I've noticed that the airspeed indicator for my
Model IV is off by
>sometimes
>10 - 15 mph (e.g; reading 85-90 when I'm really
going 100 mph). Weird
>thing
>is that it is not consistent at all. I haven't
played with it much to
>try
>and improve it, but I suspect it is because I have
one static port
>located
>midway down the fuselage on the left side. One day
I'll disconnect the
>static from the instrument and try it that way. It
hasn't really
>bothered
>me much as I have my Gps in the middel of my panel
giving me ground
>speeds,
>and that is rarely less than 100 mph. I'm totally
happy with that as
>I'm
>flying my 912ul Model IV on amphib floats.
Incidentally, my Kitfox is
>the
>fastest 2 seat light floatplane around this part of
the country. It
>will go
>118 mph (tested again and again) flat out wide open
on floats. However
>the
>asi rarely reads much over a hundred. Drives some
of the Rans guys nuts
>as
>before my Kitfox came along they were the light
floatplanes to try and
>catch.
>
>
>
>I'm willing to bet if you test your vixen further
you will find you are
>flying faster than you think you are. Btw, I think
the climb rate is
>about
>right, but the stall speed sounds slow to me...once
again making me
>think
>your ASI is off like mine.
>
>
>
>Paul Seehafer
>
>Model IV - 912ul on Aerocet Amphibs
>
>Wisconsin
>
>
>
>ps - Here's a picture of my plane. Look at all the
drag....floats,
>rigging,
>water rudder, bubble doors, no radiator scoop, etc.,
and it will easily
>go
>100 mph even with the wheels down and locked and at
gross weight. And
>I've
>flown next to enough other aircraft now to know the
speeds my gps tests
>results are accurate (asi isn't). Your Vixen just
has to be at least as
>fast (especially when you start comparing the two
aircraft from a
>logical
>viewpoint).
>
>
>
>
>
>----- Original Message -----
>
>From: RRTRACK@aol.com
>
>To: kitfox-list@matronics.com
>
>Sent: Sunday, February 04, 2007 9:12 AM
>
>Subject: Re: Kitfox-List: Re: Vixen Information
>
>
>
>Hi BOB
>
> Thanks for the reply. All the weight and balance
scenarios is near the
>rear of the CG limits. I will keep close watch of
the CG when loading
>the
>baggage compartment. My Vixen is disappointing on
cruise speeds. It
>cruises
>at 80 Knots at 5000 RPM indicated. I think about 90
knots at 5500 RPM.
>The
>struts are faired and it has the fiberglass main
landing gear and all
>the
>wheel pants on. John McBean suggested the tack may
be off. I get about
>5200
>RPM static and it had 430# of static thrust.
>
> What it does do well is land slow. It stalls at 35
MPH with full flaps
>and
>lands just under 40 MPH. Also the climb rate is
around 1100 FPM with a
>170#
>pilot and 10 gal of fuel. I have the 68" GSC three
blade prop. How does
>this
>compare to your Vixen performance?
>
>Mark
>
>Wisconsin
>
>
>
>href="http://www.matronics.com/Navigator?Kitfox-
List">http://www.matron
>href
>"http://forums.matronics.com">http://forums.matronics
.com
>
>
>
>
>href="http://www.matronics.com/Navigator?Kitfox-
List">http://www.matron
>href
>"http://forums.matronics.com">http://forums.matronics
.com
>
>
>
>
>
Message 24
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Don't forget to tell them why you want the altitude check otherwise they
will just read your transponder altitude right off their radar screen.
Most cases that altitude is presented as it comes from your transponder.
At least one airliner has crashed (not Kitfox VFR conditions) because of
that false info.
Noel
> -----Original Message-----
> From: owner-kitfox-list-server@matronics.com
> [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of
> Michel Verheughe
> Sent: Thursday, February 08, 2007 11:31 AM
> To: kitfox-list@matronics.com
> Subject: RE: Kitfox-List: Re: ASIs
>
>
> > From: Barry West [barry@pgtc.com]
> > But there must be something wrong with
> > the airspeed indicator. Does anyone have any suggestions?
>
> A way to find out if it is the ASI or the static port (or
> cabin pressure) is to fly in a radar controlled zone with
> your transponder mode C then ask for altitude check. If the
> given altitude is the same as what you can read on your
> altimeter, the error is a under or over pressure in the
> static port (or cabin). If not, then your ASI needs calibration.
>
> Cheers,
> Michel
>
>
> <pre><b><font size=2 color="#000000" face="courier new,courier">
>
> href="http://www.matronics.com/Navigator?Kitfox-List">http://w
> ww.matronics.com/Navigator?Kitfox-List</a>
> href="http://forums.matronics.com">http://forums.matronics.com</a>
>
> </b></font></pre>
Message 25
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| Subject: | Re: KingFox Tires (check this wild video) |
I liked the King Fox tires and mentioned them to a local pilot who often
has soft field conditions to deal with. Seem to be working well for him.
Check out this video clip and you will see what I mean. Geez!!
http://video.google.ca/videoplay?docid=5572656865089136299&hl=en-CA
Gary Walsh
KF IV Anphib 912S
C-GOOT
www.decisionlabs.com/kitfox
do not archive
Message 26
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| Subject: | ASI's and Altimeter Calibration |
The current discussion brings up a concern I have never completely
understood regarding calibration of the altimeter and transponder
encoder.
As I understand it the process uses a calibrated vacuum source to
connected to the static line to:
1) ensure that the altimeter reads correctly over its range of operation
2) ensures that the output of the encoder agrees with the altimeter
when corrected to standard atmosphere pressure
My concern is that in actual dynamic operation ( i.e. flying ) the
location of the static source can and does affect ASI and Altimeter
readings.
Is it that the static port location does not effect the altimeter and
encoder readings sufficiently to be of concern even though ASI
readings are affected?
Perhaps the calibration process tests in some way that I am unaware,
the location of the static port?
Am I missing something it the calibration process?
Message 27
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| Subject: | Re: Kitfox List Database |
Missed me Lowell
Gary Walsh
KF IV Anphib 912S
C-GOOT
www.decisionlabs.com/kitfox
do not archive
"Lowell Fitt" <lcfitt@sbcglobal.net>
Sent by: owner-kitfox-list-server@matronics.com
02/06/2007 12:44 PM
Please respond to kitfox-list
To: <kitfox-list@matronics.com>
cc:
Subject: Kitfox-List: Kitfox List Database
I think?? I have all the new stuff on the sreadsheet. Check and let me
know.
Lowell
Message 28
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| Subject: | Oshkosh trip fuel economy figures/picture |
This is probably on topic, so I won't "d-n-a" it...hope all/most agree. I'v
e included a picture sent via Kodak EasyShare, so this may stir up some com
plaints...if so, I apologize in advance.
The trip home was decidedly better in the fuel economy department...3.5 gph
versus 4.6 going up. My initial posting of fuel figures had me adding one
fill-up twice...not so good!
I was fighting a wind all the way to Oshkosh, but for some of the return tr
ip I had a tail wind. And I probably didn't have the throttle open as far r
eturning as I did trying to get there before the event was over.
I also feel that the "dirty" plane had a lot to do with the speed/throttle
opening required. Taking off the wheel pants and installing the skis really
added drag, I think. When I look at pictures of the plane (from the front)
with pants versus skis, it's easy to see where the drag is produced...all
that tubing hanging out in the breeze is not too "clean."
Lynn
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Message 29
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| Subject: | Re: KingFox Tires (check this wild video) |
Gary,
you can get those videos at you tube
http://www.youtube.com/profile?user=kitfoxflyer
as well as http://www.cfisher.com
I am on Skis now .......... The King fox tire wer fine up till about 8
inches of snow and then alot of rolling resistance.
Now it all windpacked and hard and Tires would be good for alot of
places.
And you still got floats on ?
Hopefully this will encourage others to get some videos up as well.
Dave
----- Original Message -----
From: kitfoxjunky
To: kitfox-list@matronics.com
Sent: Thursday, February 08, 2007 12:32 PM
Subject: Re: Kitfox-List: KingFox Tires (check this wild video)
I liked the King Fox tires and mentioned them to a local pilot who
often has soft field conditions to deal with. Seem to be working well
for him. Check out this video clip and you will see what I mean.
Geez!!
http://video.google.ca/videoplay?docid=5572656865089136299&hl=en-CA
Gary Walsh
KF IV Anphib 912S
C-GOOT
www.decisionlabs.com/kitfox
do not archive
Message 30
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| Subject: | Re: Oshkosh trip fuel economy figures/picture |
Message 31
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On Feb 8, 2007, at 5:46 PM, kurt schrader wrote:
> This of course depends upon your Mod C being
> calibrated
Well ... yes, Kurt and Noel. My thinking actually comes from my first
blunder. The previous owner of my plane flew only G airspace. Here,
near Oslo, it's pretty much controlled so the first thing I did was to
install a transponder mode C. On the first flight, I asked the local
tower: "Radar check, please!" He gave me my position and altitude.
"Cool!" I thought, "this is exactly what my altimeter shows! It must be
pretty accurate."
Then, later one, someone told me: "Not quite so! It only means that you
were both using the same QNH."
Indeed, because both altimeter and the transponder's altitude encoder
are connected to the same static port.
In this case, we wanted to know if the ASI needs calibration, or if it
is a static port problem. I suggested then a process of elimination.
Knowing that the indicated airspeed is wrong and assuming that the
altitude encoder is correct, if the indicated altitude matches the
reported altitude, then one would assume that the static port is not
really sensing the static air pressure. Does that make sense?
Kurt, of course, one could ask the controller for airspeed read out,
but then, it would be ground speed and usually we can find that from
e.g. a GPS. In any case, it won't tell if it is most likely an ASI
problem, or a static port problem.
Incidentally, I also have a static port problem, my indicated airspeed
is too high by about 5 MPH. And yes, I have the port aft, left side of
the fuselage, as recommended by Denney (Skystar, in your case! :-)
When I have a bit of time, I'll try to have a double port, one on each
side.
Cheers,
Michel
Message 32
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| Subject: | Re: KingFox Tires (check this wild video) |
On Feb 8, 2007, at 6:32 PM, kitfoxjunky wrote:
> I liked the King Fox tires and mentioned them to a local pilot who
> often has soft field conditions to deal with. Seem to be working well
> for him. Check out this video clip and you will see what I mean.
> Geez!!
Yes, Gary, this is our own Dave!
Michel
do not archive
Message 33
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| Subject: | Re: Oshkosh trip fuel economy figures/picture |
On Feb 8, 2007, at 6:03 PM, lynnmatt@jps.net wrote:
> This is probably on topic, so I won't "d-n-a" it...hope all/most agree.
Hey Lynn, I want to see a photo of your skis, not a photo of you!
... (kidding, my friend! :-)
Michel
do not archive
Message 34
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I have not installed the transponder yet.
Barry
Original Message:
-----------------
From: Michel Verheughe michel@online.no
Subject: RE: Kitfox-List: Re: ASIs
> From: Barry West [barry@pgtc.com]
> But there must be something wrong with
> the airspeed indicator. Does anyone have any suggestions?
A way to find out if it is the ASI or the static port (or cabin pressure)
is to fly in a radar controlled zone with your transponder mode C then ask
for altitude check. If the given altitude is the same as what you can read
on your altimeter, the error is a under or over pressure in the static port
(or cabin). If not, then your ASI needs calibration.
Cheers,
Michel
<pre><b><font size=2 color="#000000" face="courier new,courier">
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronics.c
om/Navigator?Kitfox-List</a>
href="http://forums.matronics.com">http://forums.matronics.com</a>
</b></font></pre>
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Message 35
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| Subject: | Rotax 582 Start Current |
The short question is: What is the approximate start current for a Rotax 582?
Why do I ask? Because today I fried the shunt on my 30A ammeter. This
shunt operates in line between the battery and starter.
I've noticed lately that starting has been slower and I attributed it
to lower battery capacity. Today I checked the voltage at 13.1V, then
tried starting. I got three very slow turn-overs followed by a click,
then nothing. It turns out the click was the shunt separating. I've
got probably 100 starts on this system over the last year. I did a
resistance check of the starter across the "big" wires and got only
0.3 ohms. Is it possible the starter is shorted? How can I tell if
the starter is bad? Do I dare simply attach the battery to the
starter directly to see if it works? I could also simply by-pass the
shunt to see if it works, then I could use the start switch. I'm
concerned, however, that if the starter is shorted I could blow the
battery. Is that a possibility?
Thanks,
Guy Buchanan
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
Message 36
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| Subject: | Re: Rotax 582 Start Current |
I would guess alot more than 30 amps .
And when cold even more as your gearbox oil is thicker.
----- Original Message -----
From: "Guy Buchanan" <bnn@nethere.com>
<rotaxengines-list@matronics.com>
Sent: Thursday, February 08, 2007 2:04 PM
Subject: Kitfox-List: Rotax 582 Start Current
>
> The short question is: What is the approximate start current for a Rotax
> 582?
>
> Why do I ask? Because today I fried the shunt on my 30A ammeter. This
> shunt operates in line between the battery and starter.
>
> I've noticed lately that starting has been slower and I attributed it to
> lower battery capacity. Today I checked the voltage at 13.1V, then tried
> starting. I got three very slow turn-overs followed by a click, then
> nothing. It turns out the click was the shunt separating. I've got
> probably 100 starts on this system over the last year. I did a resistance
> check of the starter across the "big" wires and got only 0.3 ohms. Is it
> possible the starter is shorted? How can I tell if the starter is bad? Do
> I dare simply attach the battery to the starter directly to see if it
> works? I could also simply by-pass the shunt to see if it works, then I
> could use the start switch. I'm concerned, however, that if the starter is
> shorted I could blow the battery. Is that a possibility?
>
> Thanks,
>
>
> Guy Buchanan
> K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
>
>
>
Message 37
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I have a spreadsheet off the web for anyone wanting to check the ASI with a
manometer. It is a simple device made up of a plastic tube bent into a U
and secured in a vertical position. Add enough water to fill the curved
part of the U then connect one end to the Pitot tube with some tubing and
begin dropping water in the open end. It only needs to be 8 inches or so in
length after the bend.
I found that my ASI is definitely not linear but accurate at about 95 mph
and deviating at lower and higher speeds in a linear fashion. A graph of
the deviation looks like a bow tie.
If there is any interest, I will post it as an attachment. It shows my
numbers.
Lowell
----- Original Message -----
From: "kurt schrader" <smokey_bear_40220@yahoo.com>
Sent: Thursday, February 08, 2007 8:46 AM
Subject: RE: Kitfox-List: Re: ASIs
> <smokey_bear_40220@yahoo.com>
>
> Hi Michel!
>
> --- Michel Verheughe <michel@online.no> wrote:
>
>> A way to find out if it is the ASI or the static
>> port (or cabin pressure) is to fly in a radar
>> controlled zone with your transponder mode C then
>> ask for altitude check. If the given altitude is the
>> same as what you can read on your altimeter, the
>> error is a under or over pressure in the static port
>> (or cabin). If not, then your ASI needs calibration.
>>
>> Cheers,
>> Michel
>
> This of course depends upon your Mod C being
> calibrated and the local controller having adjusted
> for the current pressure. Why not ask him for an
> airspeed readout while you are at it? Fly cross wind
> for the check.
>
> BTW, if you ever looked right as you begin to rotate
> for takeoff, the altitude goes down for a moment. It
> is due to the pressure building under the wing in
> ground effect and getting to the static port, where
> ever it is. Changes the ASI too.
>
> All of these pressure gauges are approximate and have
> variable accuracy. Never 100% and not = to a fun
> meter anyway. But is is "professional" to get close
> first, then the heck with it. :-) Fly the thing.
>
> Kurt S.
>
>
> Now that's room service! Choose from over 150,000 hotels
> in 45,000 destinations on Yahoo! Travel to find your fit.
> http://farechase.yahoo.com/promo-generic-14795097
>
>
>
Message 38
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Please post it Lowell. Thanks,
Deke
do not archive
----- Original Message -----
From: "Lowell Fitt" <lcfitt@sbcglobal.net>
Sent: Thursday, February 08, 2007 2:38 PM
Subject: Re: Kitfox-List: Re: ASIs
>
> I have a spreadsheet off the web for anyone wanting to check the ASI with
a
> manometer. It is a simple device made up of a plastic tube bent into a U
> and secured in a vertical position. Add enough water to fill the curved
> part of the U then connect one end to the Pitot tube with some tubing and
> begin dropping water in the open end. It only needs to be 8 inches or so
in
> length after the bend.
>
> I found that my ASI is definitely not linear but accurate at about 95 mph
> and deviating at lower and higher speeds in a linear fashion. A graph of
> the deviation looks like a bow tie.
>
> If there is any interest, I will post it as an attachment. It shows my
> numbers.
>
> Lowell
> ----- Original Message -----
> From: "kurt schrader" <smokey_bear_40220@yahoo.com>
> To: <kitfox-list@matronics.com>
> Sent: Thursday, February 08, 2007 8:46 AM
> Subject: RE: Kitfox-List: Re: ASIs
>
>
> > <smokey_bear_40220@yahoo.com>
> >
> > Hi Michel!
> >
> > --- Michel Verheughe <michel@online.no> wrote:
> >
> >> A way to find out if it is the ASI or the static
> >> port (or cabin pressure) is to fly in a radar
> >> controlled zone with your transponder mode C then
> >> ask for altitude check. If the given altitude is the
> >> same as what you can read on your altimeter, the
> >> error is a under or over pressure in the static port
> >> (or cabin). If not, then your ASI needs calibration.
> >>
> >> Cheers,
> >> Michel
> >
> > This of course depends upon your Mod C being
> > calibrated and the local controller having adjusted
> > for the current pressure. Why not ask him for an
> > airspeed readout while you are at it? Fly cross wind
> > for the check.
> >
> > BTW, if you ever looked right as you begin to rotate
> > for takeoff, the altitude goes down for a moment. It
> > is due to the pressure building under the wing in
> > ground effect and getting to the static port, where
> > ever it is. Changes the ASI too.
> >
> > All of these pressure gauges are approximate and have
> > variable accuracy. Never 100% and not = to a fun
> > meter anyway. But is is "professional" to get close
> > first, then the heck with it. :-) Fly the thing.
> >
> > Kurt S.
> >
> >
> >
> > Now that's room service! Choose from over 150,000 hotels
> > in 45,000 destinations on Yahoo! Travel to find your fit.
> > http://farechase.yahoo.com/promo-generic-14795097
> >
> >
> >
> >
>
>
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List, once again this is an Excel file. Those that don't get the
attachments drop a note. And be patient with me. Reminders I don't find
offensive. Lots going on here right now.
Lowell
----- Original Message -----
From: "Fox5flyer" <fox5flyer@i-star.com>
Sent: Thursday, February 08, 2007 1:02 PM
Subject: Re: Kitfox-List: Re: ASIs
>
> Please post it Lowell. Thanks,
> Deke
> do not archive
>
> ----- Original Message -----
> From: "Lowell Fitt" <lcfitt@sbcglobal.net>
> To: <kitfox-list@matronics.com>
> Sent: Thursday, February 08, 2007 2:38 PM
> Subject: Re: Kitfox-List: Re: ASIs
>
>
>>
>> I have a spreadsheet off the web for anyone wanting to check the ASI with
> a
>> manometer. It is a simple device made up of a plastic tube bent into a
>> U
>> and secured in a vertical position. Add enough water to fill the curved
>> part of the U then connect one end to the Pitot tube with some tubing and
>> begin dropping water in the open end. It only needs to be 8 inches or so
> in
>> length after the bend.
>>
>> I found that my ASI is definitely not linear but accurate at about 95 mph
>> and deviating at lower and higher speeds in a linear fashion. A graph of
>> the deviation looks like a bow tie.
>>
>> If there is any interest, I will post it as an attachment. It shows my
>> numbers.
>>
>> Lowell
>> ----- Original Message -----
>> From: "kurt schrader" <smokey_bear_40220@yahoo.com>
>> To: <kitfox-list@matronics.com>
>> Sent: Thursday, February 08, 2007 8:46 AM
>> Subject: RE: Kitfox-List: Re: ASIs
>>
>>
>> > <smokey_bear_40220@yahoo.com>
>> >
>> > Hi Michel!
>> >
>> > --- Michel Verheughe <michel@online.no> wrote:
>> >
>> >> A way to find out if it is the ASI or the static
>> >> port (or cabin pressure) is to fly in a radar
>> >> controlled zone with your transponder mode C then
>> >> ask for altitude check. If the given altitude is the
>> >> same as what you can read on your altimeter, the
>> >> error is a under or over pressure in the static port
>> >> (or cabin). If not, then your ASI needs calibration.
>> >>
>> >> Cheers,
>> >> Michel
>> >
>> > This of course depends upon your Mod C being
>> > calibrated and the local controller having adjusted
>> > for the current pressure. Why not ask him for an
>> > airspeed readout while you are at it? Fly cross wind
>> > for the check.
>> >
>> > BTW, if you ever looked right as you begin to rotate
>> > for takeoff, the altitude goes down for a moment. It
>> > is due to the pressure building under the wing in
>> > ground effect and getting to the static port, where
>> > ever it is. Changes the ASI too.
>> >
>> > All of these pressure gauges are approximate and have
>> > variable accuracy. Never 100% and not = to a fun
>> > meter anyway. But is is "professional" to get close
>> > first, then the heck with it. :-) Fly the thing.
>> >
>> > Kurt S.
>> >
>> >
>> >
>> > Now that's room service! Choose from over 150,000 hotels
>> > in 45,000 destinations on Yahoo! Travel to find your fit.
>> > http://farechase.yahoo.com/promo-generic-14795097
>> >
>> >
>> >
>> >
>>
>>
>>
>>
>>
>
>
>
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| Subject: | Re: Rotax 582 Start Current |
Hi Guy, I have the instillation instructions for the Rotax two stroke electric
starter. Believe it or not, it says initial draw is 200 amps, decreasing to approx
50 amps at 500 RPM. They emphasize using a good flexible multistrand #4
wire. Due to the high draw I suspect. These instructions do not include installing
a link or fuse in the solinoid to starter wire.
Tom Jones
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=93784#93784
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| Subject: | Re: RPM indicators for Rotax engines. |
Hi Noel,
Right on there, yes the newer has it's own coil (the gray wire) winded
parallel on one of the ignition coils. There's also a 1Kohm (1000 ohm)
resistor in serial with this line to prevent too high voltage entering t
he
RPM indicator. The early model engines had them installed inside the
flywheel house, but later one removed to outside of the engine due to
experienced failure modes. The SI 5UL90E contain information about
"disturbance of tachometer 9667 072" and this resistor. Remember, one "5
82
engine" rev give 6 pulses (shaped sinus).
So 6800 RPM will produce a frequency of: f=RPM*(number of poles)/60
second(one minute)=6800*6/60=680 I.E. Hz
When the engine is running at 6800RPM the frequency of pulses arriving
from the engine is 680 Hertz. Then it should be easy to check with a
"tone generator" (use less than 10 VAC) and an accurate frequency counte
r
your RPM indicator.
I've been thinking that this error only was limited to the old engines
without the special thacho wire (Grey), but this Service Instruction "SI
15UL94" also warn about the influence from the lightning coils even the
fact that they are separated from each other. Just thought this might be
interesting for someone out there.
On my Fox, the lightning coil is used for the RPM indicator giving two
periodes pr. rev.
Check here for all the different kind Wesberg (Westach) instruments and
their setup.
http://www.westach.com/
Here's lot's of instruments and connection setup (that's not very
readable).
And this site, some other brand of tachometer for our engines.
http://www.umainstruments.com/Tachometer.htm
Their home site, here's lot's of instruments:
http://www.umainstruments.com/
Torgeir.
On Mon, 05 Feb 2007 01:44:10 +0100, Noel Loveys <noelloveys@yahoo.ca>
wrote:
>
> Hi Torgeir:
>
> Following the wiring diagram of my R582-UL the lighting coils are
> completely
> separate from the ignition coils. So loading the lighting system
> shouldn't
> and in fact, doesn't make any difference to my Kitfox tach. My analog
ue
> reading tach is quite linear in it's error. Approximately
> 200RPM/1000RPM or
> 20% always consistent and always low.
>
> My tiny tach is powered by a built in battery and triggered by pulses
> passing through the plug wires. The pulses are no doubt digitized, de
> bounced, frequency counted, divided by 2 (2 firings per revolution) an
d
> then
> the end result displayed. I believe the highest resolution is 10rpm.
As
> with most things digital trends are quite difficult to follow ( how fa
st
> an
> RPM is increasing/decreasing) and steady RPM are easy to attain.
>
> For that reason I still have my old erroneous Kitfox analogue tach in
the
> dash as well as the digital tach.
>
> BTW. My understanding of the original tach is that it also reads pulse
s
> not
> signal amplitude. Apparently there was a problem with them burning ou
t
> with
> too much current passing through them so a nice healthy resistor was
> placed
> in series to protect the input of the meter.
>
> Noel
>
>
>> -----Original Message-----
>> From: owner-kitfox-list-server@matronics.com
>> [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of
>> Torgeir Mortensen
>> Sent: Saturday, February 03, 2007 9:06 PM
>> To: kitfox-list@matronics.com
>> Subject: Kitfox-List: RPM indicators for Rotax engines.
>>
>>
>> <torgemor@online.no>
>>
>> Hi there,
>>
>> For a long time, I've been looking into this RPM problem
>> related to our
>> Rotax engines.
>>
>> You know, I've had it, on my "very" old (sorry lady), engine setup.
>>
>> Well, this RPM indication problem is NOT related to the
>> "simple" Rotax RPM
>> indicator!
>>
>> Hey, this very same principle is used in the most reliable
>> RPM setups we
>> know about out there!
>>
>> There is only two wires going into the RPM indicator, just a
>> signal and no
>> power(?).
>>
>> OK., since the signal is just an alternating voltage, we
>> simply "steal" a
>> little of this energy for the indicator, using a full wave
>> (or half wave)
>> rectifier for power, then we measure the RPM(frequency) of this
>> alternating voltage, you see, -simple.
>>
>>
>> The thing is that our "well known" charging system is the problem!
>>
>> Before any protest here, ( :) ); Try this:
>>
>> Make sure that you can see the problem, yes -your RPM
>> indicator is reading
>> to low (as always -and normal)! This might be confirmed with
>> the hand
>> hold optical device.
>>
>> Now, discharge your battery a little (well -make sure there's
>> enough juice
>> for a restart of the engine), start your engine, switch on a
>> little of the
>> load that you have, LDG lights etc. -if necessary.
>>
>> What kind of RPM reading do you see now? Right, normal - but
>> how can this
>> be?
>>
>> This is something we'll discuss, but first some confirmation,
>> from those
>> with the problem..
>>
>>
>> Torgeir.
>>
>>
>>
>>
>> --
>> Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
>>
>>
>>
>>
>
>
========================
============
========================
============
========================
============
>
>
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| Subject: | Re: ASIs (was Vixen Information) |
Thanks Dave, I think we both need an answer. Anybody have an explanation
to these different problems, Dave's reads too low and mine reads too high?
Barry
Original Message:
-----------------
From: dave dave@cfisher.com
Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
Barry, Mine reads at 90MPH TAS about 105 +
I have no external static port.
Now If i open the door the ASI drops to about 95 mph
Then if I stick my arm out the door fully exteneded and my ASI reads about
90 mph.
I guess you could say that doing this makes the cabin at th proper pressure
as it would be with a proper external static port.
At lower speeds 75 mph or les it seems fairly accurate to about 45 mph then
the ASI reads low.
Movies here http://www.cfisher.com
Dave
----- Original Message -----
From: "Barry West" <barry@pgtc.com>
Sent: Thursday, February 08, 2007 9:09 AM
Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
> My airspeed indicator is just the opposite, it is accurate up to about 90
> mph then starts reading too high, as much as 15 mph at 100 (which has to
> be while decending.)
>
> I operated without a static port, just using the pressure behind the
> panel, until recently when I put a static port in anticipating
> installation of a transponder, but this seemed to have no effect. I will
> learn more when the system is calibrated and certified. But there must
be
> something wrong with the airspeed indicator. Does anyone have any
> suggestions?
>
> Barry West
>
> ----- Original Message -----
> From: "kurt schrader" <smokey_bear_40220@yahoo.com>
> To: <kitfox-list@matronics.com>
> Sent: Wednesday, February 07, 2007 7:03 PM
> Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
>
>> <smokey_bear_40220@yahoo.com>
>>
>> Paul,
>>
>> Any chance that water got in the static line?
>>
>> Kurt S.
>>
>> --- Paul Seehafer <av8rps@tznet.com> wrote:
>>
>>> Mark,
>>>
>>> I've noticed that the airspeed indicator for my
>>> Model IV is off by sometimes 10 - 15 mph (e.g;
>>> reading 85-90 when I'm really going 100 mph). Weird
>>> thing is that it is not consistent at all......
>>
>>
>>
>> 8:00? 8:25? 8:40? Find a flick in no time
>> with the Yahoo! Search movie showtime shortcut.
>> http://tools.search.yahoo.com/shortcuts/#news
>>
>>
>>
>>
>
>
>
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| Subject: | Re: RPM indicators for Rotax engines. |
Hi Rick,
Find the type of instrument that you have, P/N or model then find the
current setup at Wesberg site here:
I'll think that your tachometer is of the kind that need separate power
supply, or is a combined type that can use only pulse signal, or pulse
with own (steady) power.
Here's the link to Wesberg:
http://www.westach.com/
Good luck.
Torgeir.
On Mon, 05 Feb 2007 06:16:25 +0100, <Mdkitfox@aol.com> wrote:
> In a message dated 2/3/2007 7:38:33 P.M. Eastern Standard Time,
> torgemor@online.no writes:
>
> There is only two wires going into the RPM indicator, just a signal and
> no
> power(?).
>
>
> I have the Rotax RPM indicator for my 912S and while the engine has only
> 2
> wires going to the tach, the Tach has 3 terminals. They're numbered
> 1,2,3.
> Does anyone have any idea which terminals get wired to the engine and
> what's
> the extra terminal for anyway?
> Thanks,
>
> Rick
> Series V Speedster - N39RW
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| Subject: | Re: Rotax 582 Start Current |
Guy,
The shunt should not be used between the starter and the battery, the
shunt must be installed between your main fuse (20 Amp?) and the bus bar.
In this way your ampere meter only show the flow between normal users
radio, light etc. and charging. If you actually is charging the battery a
little, you'll have a positive reading, but drawing to much give a
negative reading due too high load for your generator -so time to switch
off some extra load. :)
Torgeir.
On Thu, 08 Feb 2007 20:04:04 +0100, Guy Buchanan <bnn@nethere.com> wrote:
>
> The short question is: What is the approximate start current for a Rotax
> 582?
>
> Why do I ask? Because today I fried the shunt on my 30A ammeter. This
> shunt operates in line between the battery and starter.
>
> I've noticed lately that starting has been slower and I attributed it to
> lower battery capacity. Today I checked the voltage at 13.1V, then tried
> starting. I got three very slow turn-overs followed by a click, then
> nothing. It turns out the click was the shunt separating. I've got
> probably 100 starts on this system over the last year. I did a
> resistance check of the starter across the "big" wires and got only 0.3
> ohms. Is it possible the starter is shorted? How can I tell if the
> starter is bad? Do I dare simply attach the battery to the starter
> directly to see if it works? I could also simply by-pass the shunt to
> see if it works, then I could use the start switch. I'm concerned,
> however, that if the starter is shorted I could blow the battery. Is
> that a possibility?
>
> Thanks,
>
>
> Guy Buchanan
> K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
>
>
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| Subject: | Ski Flyin this Weekend in Central Ontario |
Anyone planning on flying in here ? I am undecided so far .
Pics from Last year http://www.cfisher.com/mudlake.htm
Dave
February 10, Penetanguishene, ON: COPA Flight 73's annual ski fly-in and BBQ
is taking place at St. Andrews (Mud) Lake. Date is tentative for ice and
weather consideration. Event will move to Sunday 11th if necessary due to
adverse conditions and even weekend to weekend as necessary to hold the
event. Start 10 a.m. and BBQ from 11a.m. 'till noon. Ending when the last
guys toes get cold! Lake is located 0.75 Miles East of Town Water Tower and
1 Mile South of the Mental Health Centre. 0.75 miles West of N44-47-906
W79-53-434 n/a Irish Field. For more information contact Paul Turner at
705-322-1149, Bruce Tinney at 705-526-6019 or email turnerpontiac@aol.ca.
Message 46
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| Subject: | Re: ASIs (was Vixen Information) |
Barry, NO mine reads too high at cruise. when I am doing 90 mph by
GPS my ASI reads 105 or a few more. Open the door and pressure changes
and the ASI drops to about 95 mph. GPs still the same approx . ( you will
lose a few mph with door open)
Life sucks when you spend more time in Tractor snowblowing laneway in a week
then flying. :)
Next week I am hoping for a change.
Dave
----- Original Message -----
From: <barry@pgtc.com>
Sent: Thursday, February 08, 2007 7:08 PM
Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
Thanks Dave, I think we both need an answer. Anybody have an explanation
to these different problems, Dave's reads too low and mine reads too high?
Barry
Original Message:
-----------------
From: dave dave@cfisher.com
Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
Barry, Mine reads at 90MPH TAS about 105 +
I have no external static port.
Now If i open the door the ASI drops to about 95 mph
Then if I stick my arm out the door fully exteneded and my ASI reads about
90 mph.
I guess you could say that doing this makes the cabin at th proper pressure
as it would be with a proper external static port.
At lower speeds 75 mph or les it seems fairly accurate to about 45 mph then
the ASI reads low.
Movies here http://www.cfisher.com
Dave
----- Original Message -----
From: "Barry West" <barry@pgtc.com>
Sent: Thursday, February 08, 2007 9:09 AM
Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
> My airspeed indicator is just the opposite, it is accurate up to about 90
> mph then starts reading too high, as much as 15 mph at 100 (which has to
> be while decending.)
>
> I operated without a static port, just using the pressure behind the
> panel, until recently when I put a static port in anticipating
> installation of a transponder, but this seemed to have no effect. I will
> learn more when the system is calibrated and certified. But there must
be
> something wrong with the airspeed indicator. Does anyone have any
> suggestions?
>
> Barry West
>
> ----- Original Message -----
> From: "kurt schrader" <smokey_bear_40220@yahoo.com>
> To: <kitfox-list@matronics.com>
> Sent: Wednesday, February 07, 2007 7:03 PM
> Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
>
>> <smokey_bear_40220@yahoo.com>
>>
>> Paul,
>>
>> Any chance that water got in the static line?
>>
>> Kurt S.
>>
>> --- Paul Seehafer <av8rps@tznet.com> wrote:
>>
>>> Mark,
>>>
>>> I've noticed that the airspeed indicator for my
>>> Model IV is off by sometimes 10 - 15 mph (e.g;
>>> reading 85-90 when I'm really going 100 mph). Weird
>>> thing is that it is not consistent at all......
>>
>>
>>
>> 8:00? 8:25? 8:40? Find a flick in no time
>> with the Yahoo! Search movie showtime shortcut.
>> http://tools.search.yahoo.com/shortcuts/#news
>>
>>
>>
>>
>
>
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| Subject: | Re: ASIs (was Vixen Information) |
Barry and Dave,
the first step is to check the airspeed indicator, such indicators often
have a S shape in the graph. I.E. Show too low at low speed near perfect
in the middle and much to high at max. speed.
Then look at the aircraft side, a crossvented static port (this is a must
for some "correct" static pressure). Also the pitot line must be without
leak, etc.
As an example, a frozen pitot head will give increasing speed as you
climb! Or, vice versa.
Cockpit static source may give some large altimeter error as well.
It is not just enough to check the altimeter against the encoder
altimeter, you'll also need to check that the altimeter is within the
required specifications with a ramp tester, and the as a whole system.
This is really important for those flying in/into controlled airspace,
lot's of other aircraft with TCAS (traffic collision avoidness system).
Our altimeter and transponder is important items under such conditions.
Torgeir.
On Fri, 09 Feb 2007 01:08:25 +0100, barry@pgtc.com <barry@pgtc.com> wrote:
>
>
> Thanks Dave, I think we both need an answer. Anybody have an explanation
> to these different problems, Dave's reads too low and mine reads too
> high?
>
> Barry
>
> Original Message:
> -----------------
> From: dave dave@cfisher.com
> Date: Thu, 8 Feb 2007 09:31:45 -0500
> To: kitfox-list@matronics.com
> Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
>
>
> Barry, Mine reads at 90MPH TAS about 105 +
> I have no external static port.
> Now If i open the door the ASI drops to about 95 mph
> Then if I stick my arm out the door fully exteneded and my ASI reads
> about
> 90 mph.
> I guess you could say that doing this makes the cabin at th proper
> pressure
> as it would be with a proper external static port.
>
> At lower speeds 75 mph or les it seems fairly accurate to about 45 mph
> then
> the ASI reads low.
>
> Movies here http://www.cfisher.com
>
> Dave
>
>
> ----- Original Message -----
> From: "Barry West" <barry@pgtc.com>
> To: <kitfox-list@matronics.com>
> Sent: Thursday, February 08, 2007 9:09 AM
> Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>
>
>>
>> My airspeed indicator is just the opposite, it is accurate up to about
>> 90
>> mph then starts reading too high, as much as 15 mph at 100 (which has to
>> be while decending.)
>>
>> I operated without a static port, just using the pressure behind the
>> panel, until recently when I put a static port in anticipating
>> installation of a transponder, but this seemed to have no effect. I
>> will
>> learn more when the system is calibrated and certified. But there must
> be
>> something wrong with the airspeed indicator. Does anyone have any
>> suggestions?
>>
>> Barry West
>>
>> ----- Original Message -----
>> From: "kurt schrader" <smokey_bear_40220@yahoo.com>
>> To: <kitfox-list@matronics.com>
>> Sent: Wednesday, February 07, 2007 7:03 PM
>> Subject: Re: Kitfox-List: Re: ASIs (was Vixen Information)
>>
>>
>>> <smokey_bear_40220@yahoo.com>
>>>
>>> Paul,
>>>
>>> Any chance that water got in the static line?
>>>
>>> Kurt S.
>>>
>>> --- Paul Seehafer <av8rps@tznet.com> wrote:
>>>
>>>> Mark,
>>>>
>>>> I've noticed that the airspeed indicator for my
>>>> Model IV is off by sometimes 10 - 15 mph (e.g;
>>>> reading 85-90 when I'm really going 100 mph). Weird
>>>> thing is that it is not consistent at all......
>>>
>>>
>>>
>>> 8:00? 8:25? 8:40? Find a flick in no time
>>> with the Yahoo! Search movie showtime shortcut.
>>> http://tools.search.yahoo.com/shortcuts/#news
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>>
>
>
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Message 48
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| Subject: | Re: Rotax 582 Start Current |
At 03:15 PM 2/8/2007, you wrote:
>Believe it or not, it says initial draw is 200 amps, decreasing to
>approx 50 amps at 500 RPM.
Tom,
Thanks. That's just what I was looking for. So I guess the
30 amp shunt's not going to work, eh? I wonder how it worked this
long! I'm sure glad it didn't decide to fail in the desert! Now it's
back to the drawing board for the ammeter installation.
Guy Buchanan
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
Do not archive
Message 49
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| Subject: | XLS spreadsheat? |
Thanks for the help Michel and Lowell. My dial up keeps timing out before
the download completes so I'll have to find a disc to load a spreadsheet
program. Or use the computer at work.
Ron NB Ore do not archive
>From: Michel Verheughe <michel@online.no>
>To: <Kitfox-list@matronics.com>
>Subject: RE: Kitfox-List: XLS spreadsheat?
>Date: Tue, 6 Feb 2007 09:12:53 +0100 (CET)
>
> > From: ron schick [roncarolnikko@hotmail.com]
> > Lowell I'm unable to open the file. How about some help as to what
>program
> > to use. Is there a trick to get it open? Thought I had this #@%^
>computer
> > figured out. Ron NB Ore
>
>Ron, I'll try to answer for Lowell. This is a Microsoft Excel file. If you
>have Microsoft Office, the file should open by itself according to the .xls
>extension. If you don't have Microsoft Office, you can get OpenOffice, an
>open source (free) program that will open it for you. If you are on a
>Macintosh, you can run Microsoft Excel for Mac, and open the file. If you
>are on a Mac and don't have any Microsoft product, you can still open it
>using an open source program for the Mac.
>I am in the latter situation and I could open the file, so I guess anyone
>else could. Good luck.
>
>Cheers,
>Michel
>
>do not archive
>
>
><pre><b><font size=2 color="#000000" face="courier new,courier">
>
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>href="http://forums.matronics.com">http://forums.matronics.com</a>
>
></b></font></pre>
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Message 50
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| Subject: | Re: KingFox Tires (check this wild video) |
Dave and others-
I made my first "not-defined-as-an-airport" landing today...on the
frozen lake across from my house. Slipped it in over the trees,
parked it, went home for some hot soup, and later took off for the
hangar...fun stuff.
Lynn
do not archive
On Feb 8, 2007, at 1:00 PM, dave wrote:
> Gary,
>
> you can get those videos at you tube http://www.youtube.com/
> profile?user=kitfoxflyer
>
> as well as http://www.cfisher.com
>
> I am on Skis now .......... The King fox tire wer fine up till
> about 8 inches of snow and then alot of rolling resistance.
> Now it all windpacked and hard and Tires would be good for alot of
> places.
>
> And you still got floats on ?
>
>
> Hopefully this will encourage others to get some videos up as well.
>
> Dave
Message 51
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| Subject: | Re: Oshkosh trip fuel economy figures/picture |
Michel-
How's this then, Michel? I'd rather see the skis than me too.
You'll notice I "borrowed" your idea of curving the side members inward to
allow for a shorter axle extension...good idea!
Lynn
p.s. Michel, Dave, and John Perry all sent me photos/diagrams/drawings from
which I gathered the best ideas to build my skis...the lawyers will be get
ting in touch with me soon...: )
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