My uncle gave me the remains of his old Yamaha Moto-4 tonight. It's pretty much complete except for the rear end and swingarm. He said the motor was good too. My brother and I wanted to put the motor in his go-kart. There is a problem with this though, it is shaft driven. Do any of you brilliant people have some creative ideas on how to get around this. I was thinking a high speed gear box(where could I get one of these by the way?) with the input being the shaft and the output a chain. It would probably have to be a 90 degree angle gear box. Any other possibilities off the top of your heads? We probably wouldn't even attempt this until summer though. It would be awesome to have a go-kart with good ground clearence, good power and tires, electric start, and with five forward speeds and reverse. Oh well, just thought I'd get some ideas. Thanks.