RE: Poly lock grip question

["Bob Palmer" <rpalmer@ucsd.edu>]

Frank,

The rule I've been taught is that you achieve full strength when the
threaded depth of a bolt is equal to its diameter. That would mean either
3/8" or 7/16" in your case. This assumes the threads are in good shape of
course. I'd recommend about 1/2" just to be safe.

So, what is the "roll over symmetry method"? Does this means that the rocker
arm is at the 90-degree point half way between fully opened and fully
closed?


Bob Palmer
rpalmer@ucsd.edu
rpalmerbob@adelphia.net