Originally Posted by exavid
My two stroke Schwinn runs great, it tops out a bit over 30mph with a 40T sprocket. There's little vibration on that bike, I wish I could say the same for the four stroke.
I'm with him on this-- my land yaght cruzer has goodies dangling all over w/ 66cc china girl, 40t sprocket,old carb, std exhaust does 35 before it starts vibrating. I can cruz 30 all day but I like 25, and I've hit 40 (very sketchy) I just have small hard rubber strips between mounts and frame nice and tight w/loktite. I get vibration at high rpm not speed, these little motors seem to like 3500rpm a lot better than 6000. come on its made out of melted beer cans. We seem to squeeze a lot out of them now. I think firmer mounts make them shake less. If its all loose hanging on big rubber doughnuts it seems it would shake more on the mounts.