[NSRCA-discussion] YS160 Piston problems

[vicenterc at comcast.net]

Aluminum fatigue could be part of the problem.  After how many flights the piston is developing cracks.  If this a general problem?

Vicente "Vince" Bortone

-------------- Original message -------------- 
From: Zoro1024 at aol.com 

I don't think it's a fit problem John, the YS has a teflon insert on both ends of the piston pin that keeps it in place and protects the liner.  They push out easily with the pin, so it is basically a free floating piston pin, besides it is fairly evident that the crack is originating from the top of the piston as the center looks like it is pushed down.


Mike
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