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Old 01-07-2017, 07:57 PM
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rvbuilder2002 rvbuilder2002 is offline
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,791

Originally Posted by cczarnik View Post
Minimum driven head thickness .038 per Mil Spec. That's a lot thinner than what you get with the 1.5D rule of thumb for the shop head.
Actually, using the .5 rule of thumb for thickness the nominal would be about .047 thick so only about .009 difference. A couple in the photo looked like they might be thinner than the Mil Spec minimum, but maybe not.
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Scott McDaniels
Hubbard, Oregon
Van's Aircraft Engineering Prototype Shop
RV-6A (aka "Junkyard Special ")
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