I agree with you that the original yokes are no longer available. I ended up purchasing a pair of yokes from Aircraft Spruce, made by ACS, which were STC'd for the Navion. I used this STC to obtain approval from my FSDO to install them in my customers' Alon. However, the diameter of the inside of
the yoke was a couple .001 inches too small. We ended up taking the chrome plating off the new shafts, obtained from Univair, in the area where the yokes fit. Then we heated the yokes to about 300 degrees and drove them on the end of the shafts. (Actually they twisted on most of the way) I used the taper pin hole to ensure that the yokes were perpendicular to the shaft orientation, and then milled a small area off the new yoke to drill a hole for a close tolerance fit AN bolt. They came out looking like a factory job, and the owner was quite pleased. I had no trouble getting 337 approval for a major alteration, because the original yokes were no longer available for the Alon, and the new ones had STC paperwork for a certified airplane. Lynn Nelsen N99387 52FL __________________________________________________________________________ ______ To unsubscribe from this list please send mailto:[EMAIL PROTECTED] ___________________________________________________________ T O P I C A The Email You Want. http://www.topica.com/t/16 Newsletters, Tips and Discussions on Your Favorite Topics
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