ID for Expansion Chambers/Tuned Pipes

[Rob Voska]

It's not an O it's a Q. As in Gem QT short for Quick Time. Probably from the 80's.

If you want to study expansion chambers........ there is a lot of info out there but most of it is motorcycle related and they don't use the powerband like a kart does. Gordon Jennings Two Stroke Tuners Handbook is very good. There is software to design pipes also. But pipes are a cut and try with guidelines and expierence more than a cut and dried science.