bigger gear that drives a smaller gear will go faster. little one that drives a smaller one will give better bottom end torque. using big tires with a bigger gear that drives a smaller gear will go even faster.
Sorry, I guess I wasnt specific enough. I know how the sprokets set up will work, but the motor I have, has a gear reducer attached to it. It is that gear reducer that I want to know the effect of that on my go cart, or if you know, should i just take that off and run it strait from the motor?
as long as there is a clutch or better yet a belt drive. i know someone who's got a self built one with a eight horse horizontal shaft engine using a belt driven clutch that just will keep you planted in the seat.