Originally Posted by goshawks00
I am starting to gather what I need to do some metal work on the F.C. but I am not sure if this is the correct rivet length I need. I am putting on new lower panel skin.
What I am looking at is "Modified Brazer Head Rivets AN456A - 5/32"D 3/8"L"
Now then I will be riveting together these three: side skin (.040)+belly skin (.030)+ new C channel (.070)= .140. What is the correct clinch allowance and are 3/8"length (.375) rivets to long? If so what would be the recommended length?
The length of a buck rivet really doesn't matter.
What does matter has it been properly bucked, with and adequate overlap on the interior, or back side.
In your case, 3/8 or 1/2 inch is fine.
Seal each one with Vulkem and add Vulkem between the seams before you do any riveting.