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Dick Maddux
Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl
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 Posted: Mon Sep 15, 2008 5:04 am Post subject: Model 4 wing rigging |
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Ever since I bought my airplane last year I have noticed it sits on the ground with the left wing quite low as compared to the right. I had thought it to be a weak bungee on that side or possible gear alignment.
Yesterday I measured and it is not the fuselage that is crooked it is the wing dihedral.
I looked throughout my plans and can find nothing on aircraft assembly or wing rigging.
Today I will run a string across the top of the wing behind the leading edge to see how far I am off by measuring each wing at the root.
The aircraft will fly hands off when wind conditions allow but siting on the ramp "one wing low" is starting to bug me. It is easily a foot or lower than the other wing.
Anyone have any instructions on properly setting the wing? I know I had instructions on how to do it for my Piper Pacer in the manual I used to have but I sure can"t find it in the Kitfox books
Thanks !
Dick Maddux
Fox 4-1200
Pensacola,Fl
Psssst...Have you heard the news? There's a new fashion blog, plus the latest fall trends and hair styles at StyleList.com.
[quote][b]
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Tom Jones
Joined: 12 Mar 2006
Posts: 752
Location: Ellensburg, WA
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| Posted: Mon Sep 15, 2008 6:40 am Post subject: Re: Model 4 wing rigging |
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Dick, if you did find the wing rigging instructions in your manual you would go nuts following them and chasing the rigging. A service letter came out after I had already gone nuts with the manual instructions. Here it is
http://www.kitfoxaircraft.com/support/service_letters/sl25b.htm
It is fairly easy to do before the wings are covered but I think you can use these instructions to get the idea on how to check the dihedral to compare your wings to each other with the covering on.
A smart level will make comparing the wings with each other real easy but you will need to use a bubble level to check against factory specs.
Once the bottom attach hole and strut attach bracket holes are drilled in the spar only minor wing rigging adjustments can be made.
The wings will fly level even if the dihedral is different between wings. The fuselage will just be hanging at an angle under the wings.
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_________________
Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA |
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kerrjohna(at)comcast.net
Guest
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| Posted: Mon Sep 15, 2008 8:33 am Post subject: Model 4 wing rigging |
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a couple of thoughts. Check the inflation on the tires:-)
Level the frame left right and longitudinally.
Check dihedral of each wing. If you can't locate a smart level try a Craftsman needle level resting on a bubble level across the ribs at the front spar location and the same distance outboard on each wing.
Some adjustment can be made to the strut rod ends without tweaking the jury struts, but replacing them would be relatively inexpensive if necessary.
I adjusted the strut rod ends several times over the first year to get hands off straight and level. The turn coordinator/dihedral etc are not independent.....
John Kerr
Classic IV, 912ul, 778 hours
Logan UT
[quote]-------------- Original message --------------
From: Catz631(at)aol.com
Ever since I bought my airplane last year I have noticed it sits on the ground with the left wing quite low as compared to the right. I had thought it to be a weak bungee on that side or possible gear alignment.
Yesterday I measured and it is not the fuselage that is crooked it is the wing dihedral.
I looked throughout my plans and can find nothing on aircraft assembly or wing rigging.
Today I will run a string across the top of the wing behind the leading edge to see how far I am off by measuring each wing at the root.
The aircraft will fly hands off when wind conditions allow but siting on the ramp "one wing low" is starting to bug me. It is easily a foot or lower than the other wing.
Anyone have any instructions on properly setting the wing? I know I had instructions on how to do it for my Piper Pacer in the manual I used to have but I sure can"t find it in the Kitfox books
Thanks !
Dick Maddux
Fox 4-1200
Pensacola,Fl
Psssst...Have you heard the news? There's a new fashion blog, plus the latest fall trends and hair styles at StyleList.com.
[b]
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http://www.matronics.com/Navigator?Kitfox-List |
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Lynn Matteson
Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan
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| Posted: Mon Sep 15, 2008 9:42 am Post subject: Model 4 wing rigging |
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Just for kicks the other day, I placed my Smart Level on top of a 4-
ft bubble level, and was amazed to see that a 1/10th of a degree can
easily be seen in the bubble placement within the lines of the
bubble level...2/10ths of a degree is way off.....I know, I know, I
need to get my plane back in the air and quit doing these things, but
an idle mind, etc, etc.....
Lynn Matteson
Kitfox IV Speedster
Jabiru 2200, 562 hrs...engine assembled and back in the plane;
waiting for new ignition system
Status: "Condition grounded, but determined to try." (Pink
Floyd..."Learning to Fly")
do not archive
On Sep 15, 2008, at 10:40 AM, Tom Jones wrote:
| Quote: | A smart level will make comparing the wings with each other real
easy but you will need to use a bubble level to check against
factory specs.
--------
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 4373#204373
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_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM |
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Dick Maddux
Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl
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