(18-04-19, 09:42 PM)jackinacabin link Wrote: The title says it ... I want to put the maximum I can to make this very rapid bike a bit less of a screamer and less gear changing , I have a Kliktronic gear shifter as I am disabled but even so minimising changes is good ... I have a 17 waiting ti be fitted here but wonder if i can go higher without getting a longer chaib ... cheers folksYou are limited by the space between the chain and the clutch pushrod, I know a 16 tooth fits, but would have doubts as to a 17tooth one fitting safely as it would be extremley close to the pushrod with the chain on. The bigest available rear is 49, but you could probably have a 51 tooth made.16/51 would be almost the same as 17/48 ratio wise. Smallest available rear from JT spockets (I use these mostly) is 38 but it would probably be too small and raise the gearing to much. A 16/45 would be almost the same as 17/48 ratio wise but JT sprockets do not do 45 only 44 or 46. A16/44 would be as low as I would go. Any smaller would be like trying to take off in 2nd gear and would not do the clutch any good. I would not be inclined to recommend the 17 as it could interfere with the clutch operation and that is something you do not want.
Klilktronic is a nice bit of kit, good to see you are still able to ride