MidwestOutlaw
Member
The chain alignment and making sure you chain guard is plenty tall are gonna be to biggy's. Personally on our stuff if the track is small enough that you have to have a 69 on the back on get the rpm's your looking for we move over to a jackshaft setup. If we have to get over a 65 on the rear we automatically setup the jackshaft. Cause 9-10 times on those small bullrings there rough and you take a chance of digging that gear in anyways. Low air pressure and that large of a gear is a no no in our neck of the woods.