Scooterotica

Hi,bit of an odd one this,but one for the mathematically competent.
Most of us have read the Webster tuning manual,a great source of information,but i cant for the life of me work out how to calculate the % rise from 3rd gear to 4th gear as he does in his gearing charts.
These days there are more gearsets available,so i would like to be able to calculate the jump between gears.
Im thinking in particular of the Vijay Mk 2 gearbox that uses the Li150 3rd and the SX200 4th.
Hopefully there is a mathematician out there that doesnt have to use his fingers,then his toes to count!

Vijay 150 is rated the worst gearbox alongside sx 150 aND GP 150 from my sources go for a pacemaker or if yout can spend the money an afternoon 5 speed

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drunkmunkey6969 wrote: ↑Sun Apr 04, 2021 10:36 am Use this: https://avantone.wordpress.com/

Fab stuff,not seen that before,very useful,thank you.....Kev

the early vijay 150 box is actually a good gearbox as the jump between 3rd and 4th is even smaller than the indian gp200 gearbox, as said the mk2 box is dire as its got a massive jump between 3rd and 4th and is not good if you have a narrow powerband. i use the gearbox calculator on here look down the index to the bottom, sadly vijay is not on it.

holty wrote: ↑Mon Apr 05, 2021 3:05 pm the early vijay 150 box is actually a good gearbox as the jump between 3rd and 4th is even smaller than the indian gp200 gearbox, as said the mk2 box is dire as its got a massive jump between 3rd and 4th and is not good if you have a narrow powerband. i use the gearbox calculator on here look down the index to the bottom, sadly vijay is not on it.

according to the Avatone gear box visulizer , vijay mk1 % rise between gears is 43,47,29
Indian GP200 43,47,19
italian 43,35,30.

Just realized your talking about the 150 box. soz