Today's Message Index:
----------------------
1. 03:33 AM - MODEL IV-1200 PERFORMANCE (lane taylor)
2. 06:50 AM - Re: MODEL IV-1200 PERFORMANCE (Tom Jones)
3. 07:24 AM - Re: landing rpm (Patrick Reilly)
4. 07:56 AM - Re: landing rpm (kerrjohna@comcast.net)
5. 08:02 AM - Re: MODEL IV-1200 PERFORMANCE (Guy Buchanan)
6. 08:34 AM - Brake sticks (peteohms)
7. 09:27 AM - Re: Re: MODEL IV-1200 PERFORMANCE (lane taylor)
8. 09:27 AM - Re: Brake sticks (bjones@dmv.com)
9. 09:27 AM - Re: Re: MODEL IV-1200 PERFORMANCE (lane taylor)
10. 10:35 AM - Re: Brake sticks (sourdostan@aol.com)
11. 11:56 AM - Re: landing rpm (Patrick Reilly)
12. 12:14 PM - Re: Brake sticks (Patrick Reilly)
13. 12:59 PM - Re: landing rpm (kerrjohna@comcast.net)
14. 01:37 PM - On Austin Craigs list (Pete Christensen)
15. 02:30 PM - Re: MODEL IV-1200 PERFORMANCE (lane taylor)
16. 03:34 PM - Re: MODEL IV-1200 PERFORMANCE (Dave Fisher)
17. 04:12 PM - Flapperons (Patrick Reilly)
18. 04:22 PM - Re: MODEL IV-1200 PERFORMANCE (Guy Buchanan)
19. 04:23 PM - Mod for strech (Patrick Reilly)
Message 1
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| Subject: | MODEL IV-1200 PERFORMANCE |
I have a Model IV-1200 with 21 hrs TT; eng/airframe with a 68" GSC GA
wood prop. I'm not seeing the performance from the 618 that I expected.
I been all over the pitch and static RPM relationship in an attempt to
find best climb/speed. Presently, I'm pitched at 14 degrees using the
GSC tool provided; showing 6400 RPM static; full throttle flight RPM of
6800 at 82 MPH; at 6000 RPM (cruise), I'm showing 74 MPH; full power
climb of 600 ftmin. The plane is OEM except for grove gear with an empty
weight of 623lbs. The plane responds very well without any glaring drag
issues. EGT's 1120; plugs look great; jetting per the manual. I'm the
builder. Any feedback would be much appreciated. Perhaps it is what it
is, but I expected more speed and better climb.
Lane
N356RL
KOSC
Message 2
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| Subject: | Re: MODEL IV-1200 PERFORMANCE |
Lane, there have been a couple times over the years I can remember a performance issue like you are having. The problem was that the tachometer was faulty. have you checked the RPM with an optical tach? Another way to cross check is to install a Tiny Tach. http://www.buycheapr.com/us/result.jsp?ga=us12&q=tiny+tachometer
--------
Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=339420#339420
Message 3
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Ed, Thanks for info. My problem, I believe has been pulling stick back too
soon and relaunching. I have been negligent in the past about pulling stic
k
all the way back and am over compensating.
Pat Reilly
On Mon, May 9, 2011 at 11:19 PM, Ed Gray <egraylaw@swbell.net> wrote:
> I don=92t get the difficulty with rpms while landing. I stay at 2500 on
> final and the prop seems to be producing drag, since I can plop on the fi
rst
> 100 feet of runway. If flaring too high, try wheel landings for a while.
> Just fly it onto the ground and keep the tail up until almost to the turn
off
> with about 2800 rpm. The Fox makes great wheelies and you can see where
you
> are going-just keep that stick forward and easy on the brakes. Comments?
>
>
> PS. I am about 2 months from completion of my Lancair 360 and waiting fo
r
> my Viking (Honda) for the Kitfox 4 in the carshed. ONE FOR SLOW AND ONE
FOR
> GO.
>
>
> Ed Gray K2 582 GSC Dallas
>
> *
>
===========
===========
===========
===========
> *
>
>
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
Message 4
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Frequently in the past, difficulty in landing has been traced back to appro
ach speed.=C2- Using the recommended 1.3 x stall speed in the pattern wil
l yield improved landings.=C2- Last year, prompted by this discussion I f
lew final at 50mph ASI @ 2000 rpm and the stick held firmly in position unt
il touch down.=C2- There was no float just a solid arrival.=C2- Using a
slight amount of flair generates a greased landing with ~200 feet roll out
.
Since adding the VG's last month I have been practicing really slow landing
s at idle with full 20 degree flaps and the plane is touching down at less
than 40 ASI and so gently there is no chance of spinning off the valve stem
s as alluded to in another thread.=C2- 20 degrees flaps does provide incr
eased adverse yaw and therefore opportunities to improve airmanship.
AOPA has a video out entitled Ups and Downs where in the chronical the prob
lems of too fast approaches and too slow take offs.
John Kerr
----- Original Message -----
From: "Patrick Reilly" <patreilly43@gmail.com>
Sent: Tuesday, May 10, 2011 8:20:37 AM
Subject: Re: Kitfox-List: landing rpm
Ed, Thanks for info. My problem, I believe has been pulling stick back too
soon and relaunching. I=C2-have been negligent in the past=C2- about pu
lling stick all the way back and am over compensating.
Pat Reilly=C2-
On Mon, May 9, 2011 at 11:19 PM, Ed Gray < egraylaw@swbell.net > wrote:
I don=99t get the difficulty with rpms while landing.=C2- I stay at
2500 on final and the prop seems to be producing drag, since I can plop on
the first 100 feet of runway.=C2- If flaring too high, try wheel landing
s for a while.=C2- Just fly it onto the ground and keep the tail up until
almost to the turnoff with about 2800 rpm.=C2- The Fox makes great wheel
ies and you can see where you are going-just keep that stick forward and ea
sy on the brakes.=C2- Comments?
PS.=C2- I am about 2 months from completion of my Lancair 360 and waiting
for my Viking (Honda) for the Kitfox 4 in the carshed.=C2- ONE FOR SLOW
AND ONE FOR GO.
Ed Gray K2 582 GSC Dallas arget="_blank">http://www.matronics.com/Navigat
or?Kitfox-List ttp://forums.matronics.com _blank">http://www.matronics.com/
contribution
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
==
Message 5
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| Subject: | Re: MODEL IV-1200 PERFORMANCE |
On 5/10/2011 3:31 AM, lane taylor wrote:
> The plane responds very well without any glaring drag issues. EGT's
> 1120; plugs look great; jetting per the manual. I'm the builder. Any
> feedback would be much appreciated. Perhaps it is what it is, but I
> expected more speed and better climb.
Lane,
The key here is that the plane "responds well". Sounds like it's
working better than your measurements would indicate. So, as Tom already
said, the first things to check are your measurements:
* Tach with an model airplane optical tach.
* ASI with a set of accurate, no wing, GPS runs.
* Measure OAT while making the ASI runs to make sure your density
altitude is reasonable.
* Make time to climb measurements to verify the VSI. One trick I
learned while doing this was to get the aircraft in a stable
climb, take a picture of the panel with the GPS showing time, then
wait a while and take another picture. Get back to base and use
the pictures to figure out the rate of climb based on the change
in time on the GPS and the change in altitude.
Next I have some questions:
* What's your gearbox ratio?
* How many blades on the prop?
* Are the EGT's full throttle?
* Is this a single plug head?
* Is this a round cowl?
* What has been faired? Possible options include:
o Wing struts
o Jury struts
o Radiator
o Horizontal stab struts
o Vertical / horizontal junction
o Gaps on vertical and horizontal
* What kind of wing tips are you running? (A picture might answer a
lot of these.)
* What's your radiator installation look like?
Your speeds are low, as my 582 powered IV will top out at 110 mph
at 6800 rpm. However I've been told my 582 is "fast" for what it's
worth. It has everything faired but the radiator. I understand that
"dirty" IV's are much slower. (I've heard 15%, or 15mph for the wing
struts alone.) Enough for now.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 592-C / Warp 3cs / 500 hrs. and grounded
Message 6
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I have a bit of a problem with a sticking brake on My Ktfox III. When I taxi for
a long distance my left brake drags and eventually binds up. I am careful
not to apply any brake and this still happens. Any ideas??
--------
Pete
Leander, TX
Kitfox III, 912ul, Grove
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=339433#339433
Message 7
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| Subject: | Re: MODEL IV-1200 PERFORMANCE |
----- Original Message -----
From: "Tom Jones" <nahsikhs@elltel.net>
Sent: Tuesday, May 10, 2011 9:48 AM
Subject: Kitfox-List: Re: MODEL IV-1200 PERFORMANCE
>
> Lane, there have been a couple times over the years I can remember a
> performance issue like you are having. The problem was that the
> tachometer was faulty. have you checked the RPM with an optical tach?
> Another way to cross check is to install a Tiny Tach.
> http://www.buycheapr.com/us/result.jsp?ga=us12&q=tiny+tachometer
>
> --------
> Tom Jones
> Classic IV
> 503 Rotax, 72 inch Two blade Warp
> Ellensburg, WA
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=339420#339420
>
>
>
Message 8
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| Subject: | Re: Brake sticks |
If the brakes are mid to early 1990 Matcos, Make sure brake pedal(s)
return completely back to thier stops after applying brakes at any point.
My Matco copilot side brake pedals did not always fully return after being
depressed and as pads and rotors warm up, and things expand, braking
occured.
Matco has provided good technical help when I have called them by the way.
> <apeterchristensen@sbcglobal.net>
>
> I have a bit of a problem with a sticking brake on My Ktfox III. When I
> taxi for a long distance my left brake drags and eventually binds up. I
> am careful not to apply any brake and this still happens. Any ideas??
>
> --------
> Pete
> Leander, TX
> Kitfox III, 912ul, Grove
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=339433#339433
>
>
Message 9
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| Subject: | Re: MODEL IV-1200 PERFORMANCE |
Miss fire. I'll check out the tach. Deke's been suggesting the same...
Thanks Tom
----- Original Message -----
From: "Tom Jones" <nahsikhs@elltel.net>
Sent: Tuesday, May 10, 2011 9:48 AM
Subject: Kitfox-List: Re: MODEL IV-1200 PERFORMANCE
>
> Lane, there have been a couple times over the years I can remember a
> performance issue like you are having. The problem was that the
> tachometer was faulty. have you checked the RPM with an optical tach?
> Another way to cross check is to install a Tiny Tach.
> http://www.buycheapr.com/us/result.jsp?ga=us12&q=tiny+tachometer
>
> --------
> Tom Jones
> Classic IV
> 503 Rotax, 72 inch Two blade Warp
> Ellensburg, WA
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=339420#339420
>
>
>
Message 10
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| Subject: | Re: Brake sticks |
If I recall correctly, there was a similar problem in the mid-nineties, an
d Matco sent out a kit to rectify the problem. Seems like the kit included
a couple of sleeves/bushings to solve the problem.
Stan Specht
Lakewood, CO
Kitfox IV Speedster
912 ul 1750+ hours
-----Original Message-----
From: peteohms <apeterchristensen@sbcglobal.net>
Sent: Tue, May 10, 2011 9:31 am
Subject: Kitfox-List: Brake sticks
.net>
I have a bit of a problem with a sticking brake on My Ktfox III. When I
taxi
for a long distance my left brake drags and eventually binds up. I am car
eful
not to apply any brake and this still happens. Any ideas??
--------
Pete
Leander, TX
Kitfox III, 912ul, Grove
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=339433#339433
========================
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========================
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Message 11
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John, I am approaching at 60 and have planning on slowing it down to 50.
Thanks.
Pat Reilly
Mod 3 582 Rwbuilt
Rockford, IL
On Tue, May 10, 2011 at 9:53 AM, <kerrjohna@comcast.net> wrote:
> Frequently in the past, difficulty in landing has been traced back to
> approach speed. Using the recommended 1.3 x stall speed in the pattern w
ill
> yield improved landings. Last year, prompted by this discussion I flew
> final at 50mph ASI @ 2000 rpm and the stick held firmly in position until
> touch down. There was no float just a solid arrival. Using a slight amo
unt
> of flair generates a greased landing with ~200 feet roll out.
>
>
> Since adding the VG's last month I have been practicing really slow
> landings at idle with full 20 degree flaps and the plane is touching down
at
> less than 40 ASI and so gently there is no chance of spinning off the val
ve
> stems as alluded to in another thread. 20 degrees flaps does provide
> increased adverse yaw and therefore opportunities to improve airmanship.
>
>
> AOPA has a video out entitled Ups and Downs where in the chronical the
> problems of too fast approaches and too slow take offs.
>
>
> John Kerr
>
> ----- Original Message -----
> From: "Patrick Reilly" <patreilly43@gmail.com>
> To: kitfox-list@matronics.com
> Sent: Tuesday, May 10, 2011 8:20:37 AM
> Subject: Re: Kitfox-List: landing rpm
>
> Ed, Thanks for info. My problem, I believe has been pulling stick back
> too soon and relaunching. I have been negligent in the past about pullin
g
> stick all the way back and am over compensating.
>
> Pat Reilly
>
> On Mon, May 9, 2011 at 11:19 PM, Ed Gray <egraylaw@swbell.net> wrote:
>
>> I don=92t get the difficulty with rpms while landing. I stay at 2500
on
>> final and the prop seems to be producing drag, since I can plop on the f
irst
>> 100 feet of runway. If flaring too high, try wheel landings for a while
.
>> Just fly it onto the ground and keep the tail up until almost to the tur
noff
>> with about 2800 rpm. The Fox makes great wheelies and you can see where
you
>> are going-just keep that stick forward and easy on the brakes. Comments
?
>>
>>
>>
>> PS. I am about 2 months from completion of my Lancair 360 and waiting f
or
>> my Viking (Honda) for the Kitfox 4 in the carshed. ONE FOR SLOW AND ONE
FOR
>> GO.
>>
>>
>>
>> Ed Gray K2 582 GSC Dallas
>>
>> *
>>
>> arget="_blank">http://www.matronics.com/Navigator?Kitfox-List
>> ttp://forums.matronics.com
>> _blank">http://www.matronics.com/contribution
>> *
>>
>>
>
>
> --
> Pat Reilly
> Mod 3 582 Rebuild
> Rockford,IL
>
> *
>
> arget=_blank>http://www.matronics.com/Navigator?Kitfox-List
> p://forums.matronics.com
> blank>http://www.matronics.com/contribution
> *
>
> *
>
===========
===========
===========
===========
> *
>
>
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
Message 12
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| Subject: | Re: Brake sticks |
Pete, I had a brake sticking. I called Matco. The tech rep said bleed back
to relieve pressure was not happening, could be 1 of 2 things. Either a
piece of a rubbber snubber in the master cyl was broken off and blocking the
bleed back port or a pedal was not returning completely. In my case there
was a linkage bind at very top of stroke. The rod was not completely
returning, maybe it was only 1/16 of an inch. Yet it still not relieving
pressure. Matco is very good on the phone at helping. But, I will bet one of
your pedals is not quite fully returning.
Pat Reilly
Mod 3 582 Rebuilt
Rockford, IL
On Tue, May 10, 2011 at 10:31 AM, peteohms
<apeterchristensen@sbcglobal.net>wrote:
> apeterchristensen@sbcglobal.net>
>
> I have a bit of a problem with a sticking brake on My Ktfox III. When I
> taxi for a long distance my left brake drags and eventually binds up. I am
> careful not to apply any brake and this still happens. Any ideas??
>
> --------
> Pete
> Leander, TX
> Kitfox III, 912ul, Grove
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=339433#339433
>
>
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
Message 13
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It will be good to hear if you find landing at the lower speed an easier ta
sk.=C2- You will note that the 60 mph approach is not much different than
the adjoining thread this morning talked of cruise speed seen with Model I
V with 618 engine.
John Kerr
----- Original Message -----
From: "Patrick Reilly" <patreilly43@gmail.com>
Sent: Tuesday, May 10, 2011 12:53:34 PM
Subject: Re: Kitfox-List: landing rpm
John, I am approaching at 60 and have planning on slowing it down to 50. Th
anks.
Pat Reilly
Mod 3 582 Rwbuilt
Rockford, IL
On Tue, May 10, 2011 at 9:53 AM, < kerrjohna@comcast.net > wrote:
Frequently in the past, difficulty in landing has been traced back to appro
ach speed.=C2- Using the recommended 1.3 x stall speed in the pattern wil
l yield improved landings.=C2- Last year, prompted by this discussion I f
lew final at 50mph ASI @ 2000 rpm and the stick held firmly in position unt
il touch down.=C2- There was no float just a solid arrival.=C2- Using a
slight amount of flair generates a greased landing with ~200 feet roll out
.
Since adding the VG's last month I have been practicing really slow landing
s at idle with full 20 degree flaps and the plane is touching down at less
than 40 ASI and so gently there is no chance of spinning off the valve stem
s as alluded to in another thread.=C2- 20 degrees flaps does provide incr
eased adverse yaw and therefore opportunities to improve airmanship.
AOPA has a video out entitled Ups and Downs where in the chronical the prob
lems of too fast approaches and too slow take offs.
John Kerr
----- Original Message -----
From: "Patrick Reilly" < patreilly43@gmail.com >
Sent: Tuesday, May 10, 2011 8:20:37 AM
Subject: Re: Kitfox-List: landing rpm
Ed, Thanks for info. My problem, I believe has been pulling stick back too
soon and relaunching. I=C2-have been negligent in the past=C2- about pu
lling stick all the way back and am over compensating.
Pat Reilly=C2-
On Mon, May 9, 2011 at 11:19 PM, Ed Gray < egraylaw@swbell.net > wrote:
I don=99t get the difficulty with rpms while landing.=C2- I stay at
2500 on final and the prop seems to be producing drag, since I can plop on
the first 100 feet of runway.=C2- If flaring too high, try wheel landing
s for a while.=C2- Just fly it onto the ground and keep the tail up until
almost to the turnoff with about 2800 rpm.=C2- The Fox makes great wheel
ies and you can see where you are going-just keep that stick forward and ea
sy on the brakes.=C2- Comments?
PS.=C2- I am about 2 months from completion of my Lancair 360 and waiting
for my Viking (Honda) for the Kitfox 4 in the carshed.=C2- ONE FOR SLOW
AND ONE FOR GO.
Ed Gray K2 582 GSC Dallas arget="_blank"> http://www.matronics.com/Naviga
tor?Kitfox-List ttp:// forums.matronics.com _blank"> http://www.matronics.c
om/contribution
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
arget=_blank> http://www.matronics.com/Navigator?Kitfox-List p:// forums.
matronics.com blank> http://www.matronics.com/contribution
arget="_blank">http://www.matronics.com/Navigator?Kitfox-List ttp://forum
s.matronics.com _blank">http://www.matronics.com/contribution
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
==
Message 14
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| Subject: | On Austin Craigs list |
Kitfox III Experimental Aircraft - $9800 (Bastrop)
------------------------------------------------------------------------
Message 15
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| Subject: | Re: MODEL IV-1200 PERFORMANCE |
Apparently my earlier email had too many pictures so here's round
two....
C box 3:1
Three bladed wood GSC presently set at 14 degrees
Cruise and full throttle EGTs remain between 1100 - 1200 F
Duel plugs per head
Round cowl
The only fairing is on the wing struts. I don't have gap seals or any
other drag reducing strategies or devices. I've double checked my wing
dihedral which is set at 2 degrees per side. All my measurements are
within 1 or 2 mm of the manual's recommendation. She flies great--just
at a slower than anticipated rate of speed and climb. I'll try your
suggestions...
----- Original Message -----
From: Guy Buchanan
To: kitfox-list@matronics.com
Sent: Tuesday, May 10, 2011 10:59 AM
Subject: Re: Kitfox-List: MODEL IV-1200 PERFORMANCE
On 5/10/2011 3:31 AM, lane taylor wrote:
The plane responds very well without any glaring drag issues. EGT's
1120; plugs look great; jetting per the manual. I'm the builder. Any
feedback would be much appreciated. Perhaps it is what it is, but I
expected more speed and better climb.
Lane,
The key here is that the plane "responds well". Sounds like it's
working better than your measurements would indicate. So, as Tom already
said, the first things to check are your measurements:
a.. Tach with an model airplane optical tach.
b.. ASI with a set of accurate, no wing, GPS runs.
c.. Measure OAT while making the ASI runs to make sure your density
altitude is reasonable.
d.. Make time to climb measurements to verify the VSI. One trick I
learned while doing this was to get the aircraft in a stable climb, take
a picture of the panel with the GPS showing time, then wait a while and
take another picture. Get back to base and use the pictures to figure
out the rate of climb based on the change in time on the GPS and the
change in altitude.
Next I have some questions:
a.. What's your gearbox ratio?
b.. How many blades on the prop?
c.. Are the EGT's full throttle?
d.. Is this a single plug head?
e.. Is this a round cowl?
f.. What has been faired? Possible options include:
a.. Wing struts
b.. Jury struts
c.. Radiator
d.. Horizontal stab struts
e.. Vertical / horizontal junction
f.. Gaps on vertical and horizontal
g.. What kind of wing tips are you running? (A picture might answer
a lot of these.)
h.. What's your radiator installation look like?
Your speeds are low, as my 582 powered IV will top out at 110 mph
at 6800 rpm. However I've been told my 582 is "fast" for what it's
worth. It has everything faired but the radiator. I understand that
"dirty" IV's are much slower. (I've heard 15%, or 15mph for the wing
struts alone.) Enough for now.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 592-C / Warp 3cs / 500 hrs. and grounded
Message 16
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| Subject: | Re: MODEL IV-1200 PERFORMANCE |
What are you using for Airspeed ?
ASI or GPS?
----- Original Message -----
From: lane taylor
To: kitfox-list@matronics.com
Sent: Tuesday, May 10, 2011 5:26 PM
Subject: Re: Kitfox-List: MODEL IV-1200 PERFORMANCE
Apparently my earlier email had too many pictures so here's round
two....
C box 3:1
Three bladed wood GSC presently set at 14 degrees
Cruise and full throttle EGTs remain between 1100 - 1200 F
Duel plugs per head
Round cowl
The only fairing is on the wing struts. I don't have gap seals or any
other drag reducing strategies or devices. I've double checked my wing
dihedral which is set at 2 degrees per side. All my measurements are
within 1 or 2 mm of the manual's recommendation. She flies great--just
at a slower than anticipated rate of speed and climb. I'll try your
suggestions...
----- Original Message -----
From: Guy Buchanan
To: kitfox-list@matronics.com
Sent: Tuesday, May 10, 2011 10:59 AM
Subject: Re: Kitfox-List: MODEL IV-1200 PERFORMANCE
On 5/10/2011 3:31 AM, lane taylor wrote:
The plane responds very well without any glaring drag issues.
EGT's 1120; plugs look great; jetting per the manual. I'm the builder.
Any feedback would be much appreciated. Perhaps it is what it is, but I
expected more speed and better climb.
Lane,
The key here is that the plane "responds well". Sounds like it's
working better than your measurements would indicate. So, as Tom already
said, the first things to check are your measurements:
a.. Tach with an model airplane optical tach.
b.. ASI with a set of accurate, no wing, GPS runs.
c.. Measure OAT while making the ASI runs to make sure your
density altitude is reasonable.
d.. Make time to climb measurements to verify the VSI. One trick I
learned while doing this was to get the aircraft in a stable climb, take
a picture of the panel with the GPS showing time, then wait a while and
take another picture. Get back to base and use the pictures to figure
out the rate of climb based on the change in time on the GPS and the
change in altitude.
Next I have some questions:
a.. What's your gearbox ratio?
b.. How many blades on the prop?
c.. Are the EGT's full throttle?
d.. Is this a single plug head?
e.. Is this a round cowl?
f.. What has been faired? Possible options include:
a.. Wing struts
b.. Jury struts
c.. Radiator
d.. Horizontal stab struts
e.. Vertical / horizontal junction
f.. Gaps on vertical and horizontal
g.. What kind of wing tips are you running? (A picture might
answer a lot of these.)
h.. What's your radiator installation look like?
Your speeds are low, as my 582 powered IV will top out at 110
mph at 6800 rpm. However I've been told my 582 is "fast" for what it's
worth. It has everything faired but the radiator. I understand that
"dirty" IV's are much slower. (I've heard 15%, or 15mph for the wing
struts alone.) Enough for now.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 592-C / Warp 3cs / 500 hrs. and grounded
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Message 17
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Kitfoxers, I have a question about my Mod 3 flapperon setting. I was shown
how the mod 3 and earlier flapperon flaps deployed reduces alieron
ability. What flapperon deployment do you mod 3 and earlier drivers use
on landing? The fellow that called this to my attention said not to deploy
flapperons for landing because of the loss of alieron roll. I also had an
instructor that said not to deploy Kitfox alierons on landing, "it really
causes nose down attitude". He didn't explain why though otheer than the
nose down comment. Deploying full flapperons to decrease stall speed and
ground speed on landing seemed beneficial for landing to me. And, I didn't
notice the loss of alieron roll.
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
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| Subject: | Re: MODEL IV-1200 PERFORMANCE |
On 5/10/2011 2:26 PM, lane taylor wrote:
> The only fairing is on the wing struts. I don't have gap seals or any
> other drag reducing strategies or devices. I've double checked my
> wing dihedral which is set at 2 degrees per side. All my measurements
> are within 1 or 2 mm of the manual's recommendation. She flies
> great--just at a slower than anticipated rate of speed and climb.
> I'll try your suggestions...
Yep. Clean enough, and very attractive. You should be going at least my
speeds. I'd hope for an ASI or tach error.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 592-C / Warp 3cs / 500 hrs. and grounded
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Kitfoxers, Has anyone streched a mod 4 to accomadate a Lyc 0235 engine. I
have seen the standard length fuselage with an 0235 on floats, but the
battery was all the way in the tail. It would seem as with a Supercub and
the streched Pipers running 0540's, that the mod 4 streched would be a
natural. I seem to remember a website that belonged to someone who provided
a streched Kitfox fuselage, but can't remember for sure. I guess the normal
reply would be, "Why not just get a mod 5, 6, or 7?".
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
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