Quote:
Originally Posted by Martynbiker
The standard gearing is 15 tooth gearbox 39 tooth Rear wheel (15/39) 2.6
last week I changed mine. I put a 14 Tooth Gearbox and kept the 39 rear so the gearing is now (14/39) 2.78
Now that dont seem a lot, and it isnt, it is roughly equal to putting a 43 tooth rear sprocket on, it means the Bike will not have the same top end ( theoretiacally) all i noticed is 500rpm difference higher when cruising.
BUT now it accelerates like a ROCKET.... bags more grunt,  , even the odd little wheelie for fun and is a little 'buzzier' like riding a small 2 stroke.... Ha ha!....
Martyn
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I have thought about doing that!
The problem I have is that here in the mountains of S. Brazil my buddies want to cruise at 80 kph which is I think 55 mph and I have to either keep it revving high in 4th gear or chug in 5th gear which is bad for the gear box.
Does the 14/39 ratio allow you to cruise at 55 mph in 5th gear?
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Last edited by Bamaboy; 14 Feb 2008 at 14:53.
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