i was just wondering what yall thought about a 12 hp go kart it a engine from a generator and yes it is horizontal shaft, i just recently got the 12 hp motor and frame with everthing for free from my brother in law all i have to do is get the clutch and chain, but im really herte to ask what gear ratio i should use. like a ragular ratio like 5 or sumthin. i dunno but i would really like yalls help on this one what im looking for is like fast acceleration like capaple of a burn out maybe but still a good top speed and still capable of riding on hills and stuff, thanks