Whoops!
> Now, the reason a shorter 2 stroke tuned pipe works better when longer
for
> low RPM is because the exhaust slug is moving much slower. At higher RPM,
> you need the exhaust pressure wave to come back much sooner, necesitating
a
> shorter pipe.
Wait a minute. Sorry, the exhaust slug doesn't move slower. It moves at
about the speed of sound. But since the engine RPM is lower, you don't want
the pressure wave to come back too early, so you want a longer pipe. I
really goofed there. Sorry for the confusion.
-Mike Miller
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:09:07 EDT