[rebel-builders] Moose aileron spade modification

[Bob Patterson]

"you'll have problems if you don't do it"


Couldn't resist !!! ;-)

(They don't send out bulletins for fun ... )

--

......bobp
bobp@prosumers.ca
bobp@pattersys.com
http://www.Pattersys.com
http://www.PattersonAeroSales.com
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De-fenestrate now ! Linux is the answer !

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On July 3, 2011 12:59:31 pm Tim Saxton wrote:

I'm installing the drooping wing tips on wings and wondering if the aileron
spade modification
http://www.pattersonaerosales.com/Aircr ... Aileron_Sp
ade_Mod.pdf is necessary. This adds another hinge point between the wing
tip and the aileron to take stress of the outboard hinge on the wing's
rear spar. But there is already a mod to reinforce the outboard hinge area
http://www.pattersonaerosales.com/Aircr ... NG_TIP_MOD
.pdf so I'm wondering if the aileron spade mod is really necessary. I
appreciate any comments like "I didn't do the aileron spade mod and
everything is ok" or "you'll have problems if you don't do it"?

Thanks,
Tim
SR060

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[Dick Wampach]

My understanding of cracks at wing tips and horz stab tips is caused by
vibration from the engine. The vibration arm on the wing tip is like an 18
to 1 ratio on the wing. So if the engine starts a bit rough that weight in
the spade of the aileron is amplified a whole bunch (very technical stuff
here) and has resulted in some cracks to the spar, Same for the H. Stab.

SO it already has been PROVEN to be a problem area....DO THE MODIFICATIONS.
Like Bob Says! Or regret it later! The spade must be supported on both
sides.

Dick Wampach SR-108 N331RW



-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Tim
Saxton
Sent: Sunday, July 03, 2011 10:00 AM
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Moose aileron spade modification


I'm installing the drooping wing tips on wings and wondering if the aileron
spade modification
http://www.pattersonaerosales.com/Aircr ... leron_Spad
e_Mod.pdf is necessary. This adds another hinge point between the wing tip
and the aileron to take stress of the outboard hinge on the wing's rear
spar. But there is already a mod to reinforce the outboard hinge area
http://www.pattersonaerosales.com/Aircr ... _TIP_MOD.p
df so I'm wondering if the aileron spade mod is really necessary. I
appreciate any comments like "I didn't do the aileron spade mod and
everything is ok" or "you'll have problems if you don't do it"?

Thanks,
Tim
SR060



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