So the rumor I heard was that for every tooth you loose on the sproket you can go about one mph faster. True or not true? I am thinking of buying a king 34t sproket to try and gain a little top end speed. The next question I have is about sproket installation. I bought my bike built and it was not put together as well as should have been. thats another story so Im down to my last fix. The chain sometimes hits the tire. I think it needs to be moved out maybe 1/8 - 1/4 of an inch to prevent this from happening. It will rip my rear tire apart over time other wise. So when I install the new sproket I might order how do I acheive this. I have the smooshed style install where the sproket is bolted directly to the spokes My engine is an 80cc two stoke I dont know what the brand is. I can post pics if need be. Cant wait to hear what your opinions are.