1320 Posted December 31, 2015 Share Posted December 31, 2015 My son is building his odysee and he is putting a chain drive on. He needs a large rear sprocket cause his new engine is a 6 speed. He also needs it to be for a 520 chain which I think most will be. His new engine is a crb250r....fuel injected and then turboed on e85. Anyways the mounting doesnt matter I have to fabricate that for him. He just needs something inthe high 40's low 50's cause I dont need him going 92 mph on the flats with a 42.... Quote Link to comment Share on other sites More sharing options...
TIFFNAUB Posted December 31, 2015 Share Posted December 31, 2015 if you don't want it to have that much top end you need a small sprocket in the rear Quote Link to comment Share on other sites More sharing options...
1320 Posted January 1, 2016 Author Share Posted January 1, 2016 Actually no, a smaller gear on the front or a bigger gear on the rear lowers your top speed. You can verify this by a goggle search....but ive been doing this for 30 years. Quote Link to comment Share on other sites More sharing options...
TIFFNAUB Posted January 1, 2016 Share Posted January 1, 2016 I had it a$$ backwards Quote Link to comment Share on other sites More sharing options...
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