Today's Message Index:
----------------------
1. 06:53 AM - Broken battery Box (n85ae)
2. 07:34 AM - (Barry West)
3. 07:35 AM - Re: Kitfox project on ebay (Jim_and_Lucy Chuk)
4. 08:24 AM - Re: (Rick)
5. 08:47 AM - Re: Broken battery Box (Noel Loveys)
6. 08:50 AM - Wheel balancing (RockyRim)
7. 09:10 AM - Re: Wheel balancing (Rick)
8. 09:10 AM - Re: Wheel balancing (kitfoxmike)
9. 09:28 AM - Re: Broken battery Box (n85ae)
10. 09:30 AM - Re: Broken battery Box (n85ae)
11. 09:58 AM - Re: (Randy Daughenbaugh)
12. 10:11 AM - Re: (Barry West)
13. 12:57 PM - Re: No Title (kitfoxmike)
14. 01:04 PM - Re: Kitfox and Jab 3300 (darinh)
15. 01:41 PM - Re: Model V Info (eccles)
16. 02:32 PM - Re: Re: Kitfox and Jab 3300 (Steven Didier)
17. 02:59 PM - Re: (Noel Loveys)
18. 03:06 PM - Re: Broken battery Box (kurt schrader)
19. 03:31 PM - Re: (john oakley)
20. 04:04 PM - Re: Re: Broken battery Box (Noel Loveys)
21. 06:42 PM - Re: Model V Info (Guy Buchanan)
22. 06:54 PM - Re: Model V Info (eccles)
23. 08:31 PM - Re: Broken battery Box (A Smith)
24. 08:33 PM - [ Don Usher ] : New Email List Photo Share Available! (Email List Photo Shares)
Message 1
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| Subject: | Broken battery Box |
Bruce Line asked me to forward this to the list:
Hi Jeff, I am sending a few photos that you may be interested in and I suggest
you check this out on your plane before you fly it again. It started when on
my last preflight I noticed a small (maybe 1/4 " long tear in the fabric below
the battery access panel. When I ran my finger over the tear , I felt something
hard protruding through. This began to peak my interest, so I pulled the battery
access panel off and was shocked to find that the hole in the fabric was
from the aft aluminum angle that makes up the aft attach point on the battery
box. Upon further investigation, I found that 5 out of the 6 battery box attach
points had failed and the box was resting on the rudder cables. As you can
well imagine this could have ruined my day as just a few flights before I was
doing spins. The attach failures were varied. On the aft end of the box, the
aluminum angle broke where it attaches to the eye bolts and the other failures
where from broken adel clamps. There were rub marks worn into the bottom of the
box from the rudder cables because the box had slid down and rested on the
cables-not good. I will send several photos to document the mess. Would it be
possible for you to forward this info to the list to get the information out to
guys with aft mounted batteries . This is a very big deal and shows an area
with a big design flaw. The reason for the failure is unclear. I did not have
a hard landing (other than my usual technique) but I do operate from rough grass
strips alot. The spins may also be a causal factor. All that weight (my battery
is the 22 lb variety) gyrating around may have tore it free. I am reengineering
the attach points to be much stronger and will probably switch to a lighter
Odyssey battery to fix the problem. I will send several photos in sequence.
Bruce
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=120505#120505
Attachments:
http://forums.matronics.com//files/best_broken_bat_box_123.jpg
Message 2
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Engine Running Rough
In January, 2007 my Kitfox IV with a 912 S engine threw all three blades
of my GSC propeller. There was one big "bump," the engine stopped and I
landed without incidence. Observation of the engine revealed that both
carburetors came off and the engine mount was damaged. I sent the
gearbox to Lockwood and performed a runout test on the crankshaft with
no damage either indicated. After installing a new propeller and engine
mount, the engine ran fine for about 12 hours of local flights.
Then, Saturday before last, June 16, during a Young Eagles rally, the
engine started running rough. It would idle smooth but became very
rough at about 3000 rpm. I suspected a kinked fuel line, removed the
fire shield, saw nothing, and replaced it. Then it ran smooth and I
flew it a few times with no problem. The next day I flew it about an
hour with no problem. Last Friday, June 22, I started it and it was
rough again at about 3000 rpm - I mean really rough and would not run at
a higher rpm. In both of these situations the right carburetor was
considerably cooler than the left.
At this point, I thought it appropriate to run a compression check but
when I removed the first spark plug I saw it was heavily coated with
soot. I removed all the plugs and they all were the same way. Then I
opened both carburetors, top and bottom, but could see nothing that
would cause the mixture to be rich. These plugs only had about 25 hours
on them. I installed a set of old but clean plugs and put the
carburetors back together, started the engine and this time it went to
about 4000 rpm before cutting out and running rough. Now the
carburetors are both about the same temperature. I removed the top
plugs and the ones on the left side were clean and the ones on the right
side were covered with soot.
What to do? I tend to believe the shock of losing the propeller blades
caused some kind of problem with the carburetors.
Barry West
Message 3
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| Subject: | Kitfox project on ebay |
Hi all, not sure if anyone is interested, but I put my Kitfox 3 project and
a set of wings for a Kitfox 1 or 2 on ebay. The ebay item numbers are
Kitfox 3 project-- 290132322102 and for the Kitfox 1 or 2 wings the #
is 290132328666 Thanks,
Jim Chuk
Avid Mk IV
Chisholm Mn
>
>
_________________________________________________________________
Who's that on the Red Carpet? Play & win glamorous prizes.
http://club.live.com/red_carpet_reveal.aspx?icid=REDCARPET_hotmailtextlink3
Message 4
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Barry,
Sounds like your up to the task. I would dissemble both carbs and
inspect the needle seats, slides and metering rods for any unusual wear
or nicks. Re-set float bowl height and test levels. Also if you have a
fuel regulator I might think it suspect. If it intermitted supplies to
much pressure you can run rich enough long enough to foul the plugs. If
it runs fine with new plugs and then goes foul that would be my guess.
Rick
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Barry West
Sent: Monday, June 25, 2007 7:37 AM
Subject: Kitfox-List:
Engine Running Rough
In January, 2007 my Kitfox IV with a 912 S engine threw all three blades
of my GSC propeller. There was one big =93bump,=94 the engine stopped
and I
landed without incidence. Observation of the engine revealed that both
carburetors came off and the engine mount was damaged. I sent the
gearbox to Lockwood and performed a runout test on the crankshaft with
no damage either indicated. After installing a new propeller and engine
mount, the engine ran fine for about 12 hours of local flights.
Then, Saturday before last, June 16, during a Young Eagles rally, the
engine started running rough. It would idle smooth but became very
rough at about 3000 rpm. I suspected a kinked fuel line, removed the
fire shield, saw nothing, and replaced it. Then it ran smooth and I
flew it a few times with no problem. The next day I flew it about an
hour with no problem. Last Friday, June 22, I started it and it was
rough again at about 3000 rpm ' I mean really rough and would not run
at
a higher rpm. In both of these situations the right carburetor was
considerably cooler than the left.
At this point, I thought it appropriate to run a compression check but
when I removed the first spark plug I saw it was heavily coated with
soot. I removed all the plugs and they all were the same way. Then I
opened both carburetors, top and bottom, but could see nothing that
would cause the mixture to be rich. These plugs only had about 25 hours
on them. I installed a set of old but clean plugs and put the
carburetors back together, started the engine and this time it went to
about 4000 rpm before cutting out and running rough. Now the
carburetors are both about the same temperature. I removed the top
plugs and the ones on the left side were clean and the ones on the right
side were covered with soot.
What to do? I tend to believe the shock of losing the propeller blades
caused some kind of problem with the carburetors.
Barry West
"http://www.matronics.com/Navigator?Kitfox-List"http://www.matronics.com
/Navigator?Kitfox-List
"http://forums.matronics.com"http://forums.matronics.com
8:33 AM
8:33 AM
Message 5
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| Subject: | Broken battery Box |
Bruce:
I'm trying to figure out where the long "bolts" cracked off the battery
box.
Can you get a picture showing the orientation of the tabs that were
cracked
off?
The Adel cushion clamps will crack where they did if they are installed
with
the load above the mounting bolts.
Noel Loveys, RPP, AME intern
Campbellton, Newfoundland,
Canada
Kitfox Mod III-A, 582, B box, Ivo IFA
Aerocet 1100s
<mailto:noelloveys@yahoo.ca> noelloveys@yahoo.ca
> -----Original Message-----
> From: owner-kitfox-list-server@matronics.com
> [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of n85ae
> Sent: Monday, June 25, 2007 11:23 AM
> To: kitfox-list@matronics.com
> Subject: Kitfox-List: Broken battery Box
>
>
>
> Bruce Line asked me to forward this to the list:
>
>
> Hi Jeff, I am sending a few photos that you may be
> interested in and I suggest you check this out on your plane
> before you fly it again. It started when on my last preflight
> I noticed a small (maybe 1/4 " long tear in the fabric below
> the battery access panel. When I ran my finger over the tear
> , I felt something hard protruding through. This began to
> peak my interest, so I pulled the battery access panel off
> and was shocked to find that the hole in the fabric was from
> the aft aluminum angle that makes up the aft attach point on
> the battery box. Upon further investigation, I found that 5
> out of the 6 battery box attach points had failed and the box
> was resting on the rudder cables. As you can well imagine
> this could have ruined my day as just a few flights before I
> was doing spins. The attach failures were varied. On the aft
> end of the box, the aluminum angle broke where it attaches to
> the eye bolts and the other failures where from broken adel
> clamps. There were rub marks!
> worn into the bottom of the box from the rudder cables
> because the box had slid down and rested on the cables-not
> good. I will send several photos to document the mess. Would
> it be possible for you to forward this info to the list to
> get the information out to guys with aft mounted batteries .
> This is a very big deal and shows an area with a big design
> flaw. The reason for the failure is unclear. I did not have a
> hard landing (other than my usual technique) but I do operate
> from rough grass strips alot. The spins may also be a causal
> factor. All that weight (my battery is the 22 lb variety)
> gyrating around may have tore it free. I am reengineering the
> attach points to be much stronger and will probably switch to
> a lighter Odyssey battery to fix the problem. I will send
> several photos in sequence. Bruce
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=120505#120505
>
>
> Attachments:
>
> http://forums.matronics.com//files/best_broken_bat_box_123.jpg
>
>
>
>
>
>
>
>
Message 6
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I was surprised not to find a thread about wheel balancing. Am I the only
one who has shaky tires. The red dot is mounted at the valve stem per
instructions, and tires are fully beaded. No "out of round" is apparent when
spun. Just before nose rotation, tire vibration is enough too rattle the plane.
I've talked to a half dozen A&P's who have never balanced tires! These are certified
tires.
I would prefer to spin balance them on the plane. Thanks.
Denise and Rocky Whitman
Series 7 Phase One
912S
Austin, Tx. 4yrs. Special thanks to John and Debra
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=120524#120524
Message 7
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Are you sure its not opposite the valve stem. Just asking. I have done
worse. :)
Rick
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of RockyRim
Sent: Monday, June 25, 2007 8:50 AM
Subject: Kitfox-List: Wheel balancing
I was surprised not to find a thread about wheel balancing. Am I the
only
one who has shaky tires. The red dot is mounted at the valve stem per
instructions, and tires are fully beaded. No "out of round" is apparent
when spun. Just before nose rotation, tire vibration is enough too
rattle the plane. I've talked to a half dozen A&P's who have never
balanced tires! These are certified tires.
I would prefer to spin balance them on the plane. Thanks.
Denise and Rocky Whitman
Series 7 Phase One
912S
Austin, Tx. 4yrs. Special thanks to John and Debra
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=120524#120524
8:33 AM
8:33 AM
Message 8
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| Subject: | Re: Wheel balancing |
I have the big tires and with the Grove gear my tires shake. I have to keep the
speed low to prevent. Now, I called Robbie and he said to balance the tires
and he gave me some ideas. turn the wheel on the airplane, I think you can use
a sander and run it on the wheel and spin it, take some tape on weights and
start putting them on the inside of the rim. I feel you will need to probably
remove the brakes or spread them out and loosen the wheel bearings a bit to work
properly. Another Idea I have is to put a stiffener on the back section of
the Grove gear, fair it at the back for aerodynamics and also to stiffen the
gear and then paint it for looks.
--------
kitfoxmike
model IV, 1200
speedster
912ul
building
RV7a
slowbuild wings, fuse, finish kit
"if you're not getting razzed from pilots or the FAA then you're not flying
enough"
Do not archive
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=120529#120529
Message 9
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| Subject: | Re: Broken battery Box |
Here's one more pic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=120536#120536
Attachments:
http://forums.matronics.com//files/broken_aft_attach_point_155.jpg
Message 10
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| Subject: | Re: Broken battery Box |
One more view
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=120538#120538
Attachments:
http://forums.matronics.com//files/cable_rub_areas_167.jpg
Message 11
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Barry,
I don't understand what you mean by carburetor temperature. Where do you
measure it?
I like Rick's suggestion. It maybe that one float valve was better able to
contain the pressure than the other when there seemed to be a difference
from one side to the other.
Randy Daughenbaugh, N10NH
Black Hills of South Dakota, - Near Mount Rushmore
Home Strip, Grass Room in Hangar for visitors
Series 5/7 (7 Firewall Forward) 912S, Warp Drive Taper Tip
Gross Weight 1320 lbs, Flying since November 2004
_____
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Barry West
Sent: Monday, June 25, 2007 8:37 AM
Subject: Kitfox-List:
Engine Running Rough
In January, 2007 my Kitfox IV with a 912 S engine threw all three blades of
my GSC propeller. There was one big "bump," the engine stopped and I landed
without incidence. Observation of the engine revealed that both carburetors
came off and the engine mount was damaged. I sent the gearbox to Lockwood
and performed a runout test on the crankshaft with no damage either
indicated. After installing a new propeller and engine mount, the engine
ran fine for about 12 hours of local flights.
Then, Saturday before last, June 16, during a Young Eagles rally, the engine
started running rough. It would idle smooth but became very rough at about
3000 rpm. I suspected a kinked fuel line, removed the fire shield, saw
nothing, and replaced it. Then it ran smooth and I flew it a few times with
no problem. The next day I flew it about an hour with no problem. Last
Friday, June 22, I started it and it was rough again at about 3000 rpm - I
mean really rough and would not run at a higher rpm. In both of these
situations the right carburetor was considerably cooler than the left.
At this point, I thought it appropriate to run a compression check but when
I removed the first spark plug I saw it was heavily coated with soot. I
removed all the plugs and they all were the same way. Then I opened both
carburetors, top and bottom, but could see nothing that would cause the
mixture to be rich. These plugs only had about 25 hours on them. I
installed a set of old but clean plugs and put the carburetors back
together, started the engine and this time it went to about 4000 rpm before
cutting out and running rough. Now the carburetors are both about the same
temperature. I removed the top plugs and the ones on the left side were
clean and the ones on the right side were covered with soot.
What to do? I tend to believe the shock of losing the propeller blades
caused some kind of problem with the carburetors.
Barry West
Message 12
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| Subject: | Re: Kitfox-List: |
MessageThanks Rick, I'm sending the carbs to Lockwood for rebuild.
Barry
----- Original Message -----
From: Rick
To: kitfox-list@matronics.com
Sent: Monday, June 25, 2007 10:23 AM
Subject: RE: Kitfox-List:
Barry,
Sounds like your up to the task. I would dissemble both carbs and
inspect the needle seats, slides and metering rods for any unusual wear
or nicks. Re-set float bowl height and test levels. Also if you have a
fuel regulator I might think it suspect. If it intermitted supplies to
much pressure you can run rich enough long enough to foul the plugs. If
it runs fine with new plugs and then goes foul that would be my guess.
Rick
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Barry West
Sent: Monday, June 25, 2007 7:37 AM
To: Kitfox List
Subject: Kitfox-List:
Engine Running Rough
In January, 2007 my Kitfox IV with a 912 S engine threw all three
blades of my GSC propeller. There was one big =93bump,=94 the engine
stopped and I landed without incidence. Observation of the engine
revealed that both carburetors came off and the engine mount was
damaged. I sent the gearbox to Lockwood and performed a runout test on
the crankshaft with no damage either indicated. After installing a new
propeller and engine mount, the engine ran fine for about 12 hours of
local flights.
Then, Saturday before last, June 16, during a Young Eagles rally,
the engine started running rough. It would idle smooth but became very
rough at about 3000 rpm. I suspected a kinked fuel line, removed the
fire shield, saw nothing, and replaced it. Then it ran smooth and I
flew it a few times with no problem. The next day I flew it about an
hour with no problem. Last Friday, June 22, I started it and it was
rough again at about 3000 rpm ' I mean really rough and would not run
at a higher rpm. In both of these situations the right carburetor was
considerably cooler than the left.
At this point, I thought it appropriate to run a compression check
but when I removed the first spark plug I saw it was heavily coated with
soot. I removed all the plugs and they all were the same way. Then I
opened both carburetors, top and bottom, but could see nothing that
would cause the mixture to be rich. These plugs only had about 25 hours
on them. I installed a set of old but clean plugs and put the
carburetors back together, started the engine and this time it went to
about 4000 rpm before cutting out and running rough. Now the
carburetors are both about the same temperature. I removed the top
plugs and the ones on the left side were clean and the ones on the right
side were covered with soot.
What to do? I tend to believe the shock of losing the propeller
blades caused some kind of problem with the carburetors.
Barry West
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matron
href="http://forums.matronics.com">http://forums.matronics.com
by AVG Release Date: 6/24/2007 8:33 AM
8:33 AM
Message 13
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I think your problem is something new, I think the problem is in the carbs or carb.
I recently went through some test trials , or whatever, with my 912ul lately
that sounds close to your endevour. 3000 would not run, started while I
was balancing the carbs. I pulled the choke and it ran better. So off came the
bowls and looked at everything, finally I took some carb cleaner and removed
the jets for the idle circuit, or the mid circuit, whatever it's called. It's
the one in front of the main jets with meter rod. This circuit runs just in
front of the air filter, there are three holes, the one for this circuit is
on one side and it has a real small hole, about .025. After running carb cleaner
and compressed air through this, walla, I have a running engine again. I since
have replaced the air filters and the latest problem was the flange on the
right side split open right at the lip that is inside that locks the carb in
place. Got new flanges, mikuni's, Rotax ones don't work on the kitfox, why?
because the intakes are reversed and there is more swing and vibration than the
stock rotax engine. The mikuni is stiffer, so it holds together better. Anyway,
after cleaning the carbs, fresh plugs, balancing the carbs. This plane
is way cool now. Oh, and make sure the choke closes all the way.
hope this helps
--------
kitfoxmike
model IV, 1200
speedster
912ul
building
RV7a
slowbuild wings, fuse, finish kit
"if you're not getting razzed from pilots or the FAA then you're not flying
enough"
Do not archive
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=120570#120570
Message 14
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| Subject: | Re: Kitfox and Jab 3300 |
Steve,
I think you will find that the Kitfox is hard to beat in that area...especially
when you consider the cost of other aiplanes that will get you in and out of
the mountains. I previously owned a Model 3 Kitfox and took it into a bunch of
the stips up near you. It was a great bird but I wanted a bit more speed to
travel from Utah up to the good flying country, hence the 7 with the 914. It
will give me good speed and great climb performance.
Where about in Central Idaho are you? We have a cabin and short strip just over
the hill from Shoup, Id
--------
Darin Hawkes
Series 7 (under Construction)
914 Turbo
Ogden, Utah
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=120571#120571
Message 15
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Guy
Have you found the 3 view that you were looking for?
Steve
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Guy Buchanan
Sent: Wednesday, June 20, 2007 10:50 PM
Subject: Kitfox-List: Model V Info
Hi all,
I'm looking for two things for a buddy just finishing his
model V/912ULS:
1. A three view drawing. (Required for registration or AC, I've forgotten.)
and
2. A pilot's operating handbook.
On the latter, we'd be happy to borrow one and copy, if necessary.
Thanks,
Guy Buchanan
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
Message 16
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| Subject: | Re: Kitfox and Jab 3300 |
Thanks for the info Darin. My home field is S73 Kamiah but my ranch is
just outside of Clearwater. From Shoup that would put us around 70-90
air-miles NNW. My plan is to put in a strip just outside of the back
door (1,000') and it will be aligned with the prevailing winds 98% of
the time.
Steve
On Mon, 25 Jun 2007 13:04:41 -0700, darinh wrote:
>
> Steve,
>
> I think you will find that the Kitfox is hard to beat in that
> area...especially when you consider the cost of other aiplanes that
> will get you in and out of the mountains. I previously owned a Model
> 3 Kitfox and took it into a bunch of the stips up near you. It was a
> great bird but I wanted a bit more speed to travel from Utah up to
> the good flying country, hence the 7 with the 914. It will give me
> good speed and great climb performance.
>
> Where about in Central Idaho are you? We have a cabin and short
> strip just over the hill from Shoup, Id
>
> --------
> Darin Hawkes
> Series 7 (under Construction)
> 914 Turbo
> Ogden, Utah
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=120571#120571
>
>
>
>
>
>
>
>
>
>
Message 17
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I would also consider a differential compression test. If the engine
mount
was damaged it is also possible the block or the heads may have taken a
bit
of punishment. Soot normally means over rich but can also be low
compression.
Noel Loveys, RPP, AME intern
Campbellton, Newfoundland,
Canada
Kitfox Mod III-A, 582, B box, Ivo IFA
Aerocet 1100s
<mailto:noelloveys@yahoo.ca> noelloveys@yahoo.ca
Do not archive
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Rick
Sent: Monday, June 25, 2007 12:53 PM
Subject: RE: Kitfox-List:
Barry,
Sounds like your up to the task. I would dissemble both carbs and
inspect
the needle seats, slides and metering rods for any unusual wear or
nicks.
Re-set float bowl height and test levels. Also if you have a fuel
regulator
I might think it suspect. If it intermitted supplies to much pressure
you
can run rich enough long enough to foul the plugs. If it runs fine with
new
plugs and then goes foul that would be my guess.
Rick
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Barry West
Sent: Monday, June 25, 2007 7:37 AM
Subject: Kitfox-List:
Engine Running Rough
In January, 2007 my Kitfox IV with a 912 S engine threw all three blades
of
my GSC propeller. There was one big "bump," the engine stopped and I
landed
without incidence. Observation of the engine revealed that both
carburetors
came off and the engine mount was damaged. I sent the gearbox to
Lockwood
and performed a runout test on the crankshaft with no damage either
indicated. After installing a new propeller and engine mount, the
engine
ran fine for about 12 hours of local flights.
Then, Saturday before last, June 16, during a Young Eagles rally, the
engine
started running rough. It would idle smooth but became very rough at
about
3000 rpm. I suspected a kinked fuel line, removed the fire shield, saw
nothing, and replaced it. Then it ran smooth and I flew it a few times
with
no problem. The next day I flew it about an hour with no problem. Last
Friday, June 22, I started it and it was rough again at about 3000 rpm -
I
mean really rough and would not run at a higher rpm. In both of these
situations the right carburetor was considerably cooler than the left.
At this point, I thought it appropriate to run a compression check but
when
I removed the first spark plug I saw it was heavily coated with soot. I
removed all the plugs and they all were the same way. Then I opened
both
carburetors, top and bottom, but could see nothing that would cause the
mixture to be rich. These plugs only had about 25 hours on them. I
installed a set of old but clean plugs and put the carburetors back
together, started the engine and this time it went to about 4000 rpm
before
cutting out and running rough. Now the carburetors are both about the
same
temperature. I removed the top plugs and the ones on the left side were
clean and the ones on the right side were covered with soot.
What to do? I tend to believe the shock of losing the propeller blades
caused some kind of problem with the carburetors.
Barry West
href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matron
href
"http://forums.matronics.com">http://forums.matronics.com
by AVG Release Date: 6/24/2007 8:33 AM
8:33 AM
Message 18
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| Subject: | Re: Broken battery Box |
--- n85ae <n85ae@yahoo.com> wrote:
> Bruce Line asked me to forward this to the list:
> Hi Jeff,
> ...Upon further investigation, I found that 5 out of
> the 6 battery box attach points had failed and the
> box was resting on the rudder cables......
---------------------------------------------------
Thanks for the warning. I believe we all need to
think "what if" when we build and not let a mode of
failure threaten us, if we can avoid it. No, "It
works or we die" items should go without a backup.
Since I have an NSI Soob, I also have an aft battery
of the same weight. I don't like dead weight to
balance the plane either, so I mounted the ELT in the
tail behind the battery instead of lead.
The ELT requires a 100 G mount, therefore I designed a
common mount for the battery and ELT to achieve that
for both. It is made of stainless steel and weighs
about 3 lbs, if I remember correctly, when you include
the heavy cargo strap that holds the battery in and
adds to its security.
I truely believe the tail and battery case will fail
long before my box. You could lift the plane by it.
It also has a bottom box beam that sits between the
rudder cables and prevents the battery from being able
to fall and bind the cables.
But I must admit my plane is not one of the lightest,
nor have I backed up the 6 primary wing bolts with a
BRS chute. The 39 lbs were just not justified by the
accident reports. But I still sweat that one.
Kurt Schrader
S-5/NSI turbo
CAP prop
Florida and Panama
Sick sense of humor? Visit Yahoo! TV's
Comedy with an Edge to see what's on, when.
http://tv.yahoo.com/collections/222
Message 19
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Barry,
It sounds like you had a seizure. I would do a compression test before I
touch anything else..
John Oakley
_____
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Barry West
Sent: Monday, June 25, 2007 8:37 AM
Subject: Kitfox-List:
Engine Running Rough
In January, 2007 my Kitfox IV with a 912 S engine threw all three blades of
my GSC propeller. There was one big "bump," the engine stopped and I landed
without incidence. Observation of the engine revealed that both carburetors
came off and the engine mount was damaged. I sent the gearbox to Lockwood
and performed a runout test on the crankshaft with no damage either
indicated. After installing a new propeller and engine mount, the engine
ran fine for about 12 hours of local flights.
Then, Saturday before last, June 16, during a Young Eagles rally, the engine
started running rough. It would idle smooth but became very rough at about
3000 rpm. I suspected a kinked fuel line, removed the fire shield, saw
nothing, and replaced it. Then it ran smooth and I flew it a few times with
no problem. The next day I flew it about an hour with no problem. Last
Friday, June 22, I started it and it was rough again at about 3000 rpm - I
mean really rough and would not run at a higher rpm. In both of these
situations the right carburetor was considerably cooler than the left.
At this point, I thought it appropriate to run a compression check but when
I removed the first spark plug I saw it was heavily coated with soot. I
removed all the plugs and they all were the same way. Then I opened both
carburetors, top and bottom, but could see nothing that would cause the
mixture to be rich. These plugs only had about 25 hours on them. I
installed a set of old but clean plugs and put the carburetors back
together, started the engine and this time it went to about 4000 rpm before
cutting out and running rough. Now the carburetors are both about the same
temperature. I removed the top plugs and the ones on the left side were
clean and the ones on the right side were covered with soot.
What to do? I tend to believe the shock of losing the propeller blades
caused some kind of problem with the carburetors.
Barry West
Message 20
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| Subject: | Re: Broken battery Box |
The part where the tabs broke off looks like it was a fabricated part that
was bent in a brake to form the frame. The bend was made across the grain
of the metal but the tabs were running with the grain of the metal and were
prone to cracking under stress.
I would suggest that you make a plate with the grain of the aluminium
running lengthwise and rivet it to the bottom of the battery box. If you
really wanted to you could use a piece of extruded aluminium for the part.
The grain on extruded aluminium angle is always along it's length.
On the other end where the Adel clamps broke install a couple of extension
tabs down instead of up so the tension on the Adel clamps is reversed (
tension not compression). This will be opposite to the direction shown in
AC43... Then again the load is different.
> -----Original Message-----
> From: owner-kitfox-list-server@matronics.com
> [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of n85ae
> Sent: Monday, June 25, 2007 2:00 PM
> To: kitfox-list@matronics.com
> Subject: Kitfox-List: Re: Broken battery Box
>
>
>
> One more view
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=120538#120538
>
>
> Attachments:
>
> http://forums.matronics.com//files/cable_rub_areas_167.jpg
>
>
>
Message 21
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At 01:40 PM 6/25/2007, you wrote:
>Guy
>Have you found the 3 view that you were looking for?
>Steve
Hi Tom,
I think Tom Jones is snailing one to me.
Guy Buchanan
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
Do not archive
Message 22
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OK
-----Original Message-----
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Guy Buchanan
Sent: Monday, June 25, 2007 7:53 PM
Subject: RE: Kitfox-List: Model V Info
At 01:40 PM 6/25/2007, you wrote:
>Guy
>Have you found the 3 view that you were looking for?
>Steve
Hi Tom,
I think Tom Jones is snailing one to me.
Guy Buchanan
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
Do not archive
Message 23
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| Subject: | Re: Broken battery Box |
I am no engineer, but the damage looks like it was caused by flex. The same
for the clamps. The long bolts will let the weight move the box mounts. Ever
so slightly. Resulting in cracks and then failure. Brackets should be bolted
right to the tubes. Even if that means runing vertical angle to bolt the box
onto. Just my thoughts.
Albert Smith
MudLake, Idaho
5TD NSI turbo ,CAP
Message 24
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| Subject: | [ Don Usher ] : New Email List Photo Share Available! |
A new Email List Photo Share is available:
Poster: Don Usher <denver7@xplornet.com>
Lists: Kitfox-List
Subject: KF 111 - Floats
http://www.matronics.com/photoshare/denver7@xplornet.com.06.25.2007/index.html
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