Optimal Stall speed?


Active Member
I have a briggs 3.5 on a bike right now, it's nothing fancy.

All I've done is give it a quick port job, removed the gov, a straight pipe, and a free flowing air filter.

The bike was setup with #41 chain, but I changed that out to #35. The only problem is, all my clutches are setup for 3400+ rpm stall speed!

What rpm range would be best?


Active Member
For best performance, clutch engagement should be about 200 to 300 RPM below the engine's peak torque curve. But you'd need a dyno to find that.