Definitely Ernest. The pipe length also determines which frequency it
responds to. So if section of pipe is resonating at your normal cruise
rpm, there are all sorts of simple things you can do to alter the
frequency response. Like adding a weld where one is not needed.

I'd sure give consideration to ways of altering response, but I bet
there's lot's of substance to temperature and alloy theories too.

-al wick


On Thu, 27 Jul 2006 11:20:11 -0400 Ernest Christley
<echristley@nc.rr.com> writes:
> Knowing the
> flash rate that the muffler is vibrating would easily lead to it's
> natural frequency...which could then be used for some effective
> muffler designs?