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Old 11-27-2019, 07:20 AM
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RV6_flyer RV6_flyer is offline
Join Date: Jan 2005
Location: NC25
Posts: 3,877

Originally Posted by steve murray View Post
Why are Castle nuts used on Vert Stab and rear wing spar attach points?

I am following the plans but trying to understand why a standard Nylon lock nut is not used? Is there some type movement between these mating parts?
Self Locking nuts are not used where rotation of the joint is possible. The wing can flex up and down in flight depending on weight of the aircraft and load on the wing. This can over time, loosen the rear spar nut.

Yes you have self locking nuts called out on some of the control bellcranks. The location of these self locking nuts are where bearings are used and the bearing take the rotation and not the bolt - nut.
Gary A. Sobek
NC25 RV-6
3,500+ hours
Where is N157GS
Building RV-8 S/N: 80012

To most people, the sky is the limit.
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Last edited by RV6_flyer : 11-27-2019 at 07:25 AM. Reason: spelling
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