I'm not that familiar with this stuff, and can't find any books on it at the moment. Any simple equations like the ones for 4 stroke? Probably won't touch the exhaust since they need that crazy expansion chamber thing. Looking for intake design mainly. I'm trying to help our snowmobile guys.

try the two-stroke bible

http://www.sae.org/technical/books/R-161

Krautsalat

quote:

Probably won't touch the exhaust since they need that crazy expansion chamber thing.

Wow! Why not? Thats where all the 2 stroke power is hidden.
And yes, the 'Two Stroke Bible' The Design and Simulation of the 2 stroke engine, is a good source of info as is available. Dr Gordon Blair at QUB is the guru
Cheers
Pat

it is quite simple to design a good Two Stroke Expansion Chamber or tuned pipe as it is also called.

I building some for my friends with great success and lots of increase in horsepower on there 2 strokes, using 2 Stroke Wizard Tuned Pipe expansion chamber design software. 2 Stroke Wizard Tuned Pipe it is the easiest to use of all the software packages I have seen, and is successfully used by racing guys.

see it at http://www.buildandclick.com/index.html
2 Stroke Wizard Tuned Pipe

A good book for the basics on ring dings is Two Stroke Performance Tuning by A Graham BELL ( and yeah that is his real name too !)

Currently from Amazon at a little over $25.00.
ISBN-10: 1859606199
ISBN-13: 978-1859606193.

Cheers , Pete.