Vader19 wrote:
Ginch wrote:
A mate increased his top speed by fitting a (short) t5 4th gear. He was able to change into 4th without dropping]
Yeah bur that's practical.. If he had the motor to pull the standard 4th he would have gone slightly faster
a common setup about ten years ago before many of the gear options available now were available was to go to the 125 4th gear, dropping gearing abut 2.8% on top, but then going to the 23/64 malossi/polini primary that raised all 4 gears about 1.5%. this lowered your gearing on 4th about 1%, but brought first thru third closer to fourth.
there are better ways to do that now a days, but if you wantot pull a stock 4th, it isn't about having the motor to pul it, it's better to tighten up the gear ratios with a closer ratio gearbox. you can get such a thing now from DRT, and while i haven't used it (yet) i do believe it'd make for an amazingly rideable bike when coupled to a high output setup.
there's also another option worth looking into, and that is using a DRT gear to raise 3rd, rather than the 125 gear to lower 4th. that'd be the budget way to improve your speed with gearing on a tuned 200.
pulling stock 200 gearing gets *harder* the more you tune your engine because in general the more power you produce, the higher the RPM you prodcuce it at. the higher the rpm you spin the engine to, the larger the gaps between gears become, and the more power required to pull the high gearing.
as the original poster states they have a malossi 210, i'd caution them against setting their hopes on higher speed by raising the gearing, but if they wanted to try, a 4% gearing raise would be possible with a clutch gear swap. it'd be easily undoable once they realize that it would gut their ability to pull seattle hills or ride wit ha passenger. if you're interested, let me know.