Cheers for the input guys. Yeah I figured because of the jack shaft having two different sprockets the ratio would be altered, as they obviously don't do a revolution at the same speed.. Ad it's running a Vfr750, the rear axle is in two, and joined into a bearing housing containing my 42t sprocket. The problem was it had a diff in it with fwd neutral reverse, but the ratio was like 6:1 and therefor I'd get into 6th ad it would still be pulling and revving too hard.. So we removed the diff, kept the housing and used the extra sprockets. But I reckon I need the ratio 3.5 : 1 at least
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