Hi everybody, I need a little help here, or suggestions. I have a speedway greenhorn, has 14 inch wheels, I am running the stock T C driven with a 20 series driver. I am using a comet 3/4 belt. the belt fits great in the driven, I'm running a 7hp tecumseh , mild cam and large bore float bowl carb. I suffer from the top speed bog. Been reading up on how a 7 inch driven may help. the jackshaft is 10 tooth, and rear sprocket is 54. She pulls real hard, till it tops out then starts to bog. I was thinking, maybe a 13 tooth, with 48 in the rear :scared: Bike is street leagl, but run it in the dirt. Thanks.
