gp150 gearing change

[sunrisemac]

Happy New Year to one and all, I am thinking of changing the gearbox in my GP150 and would like opinions on which ratios are available to use. The engine is tuned to what I would reckon to be stage 4 or there about and I could do with losing the big jump between 3rd and 4th

[ToBoldlyGo]

If you're happy with it overall an Indian (Vijay Mk1) gearbox would get rid of the jump between 3rd and 4th. Failing that your best bet would probably be the LI150 gearbox.

[dscscotty]

or alternatively use Indian GP200/125 Gearbox which has a very close 3rd to 4th ratio

[dscscotty]

or alternatively use Indian GP200/125 Gearbox which has a very close 3rd to 4th ratio

[sunrisemac]

I thought I'd just update on progress.
I had the weekend to take the gearbox out and change it for Li150 plus a few other jobs.
I had always assumed, (as I did no more than check all the bits when I rebuilt the soot without counting teeth), the gearset in the scoot was SX or GP 150, I was surprised to find that it was in fact a TV200 gearset, I guess that's why it was running out of puff in 4th.....
I now look forward to a bit of decent weather to get the scoot an MOT and give the new gearbox a test.