>Harry wrote: > I say 4 beats per rev would be important to me also but I can't imagine what connection there could be between cylinder bore size and number of exhaust beats, although there may be. I'll have to think about this one for a while."<
You see Harry, if the cyl bore is too large for the piston dia, you will get four "soft sizzling farts" per rev instead of four sharp beats. That's OK, don't thank me, I'm happy to guide you! I still have your GWR coach drawings!!--incredible! Geoff
