1100 GSXR Hayabusa Shifter Go Kart - MUSTSEE 1OF A KIND: eBay Motors (item 170504472638 end time Jul-04-10 15:00:00 PDT)
When I was 14 or so we put a Yamaha 250 twin direct drive into a go kart. The problem was that when you applied power it just wanted to go straight even if you turned the wheels right or left it would just keep going straight. Too much power.
you should have had about seventy five pound of wieght over the front wheels ..it would have turned then