4.8 or 5.0 gears on a RB20?

[ArKaTxU]

Hi.
I dont know what to do.
I have a jet200 (std 4.8) and Li150 (16x47 = 5.0) gears to put in a future project with a RB20.
The engine that i want to do:
RB20
Mikuni TMX35
Franspeed JL tourer
I am 16 stone and always ride solo.
Can you recommend me what to do?
Thanks!

[sean brady scooters]

maybe change your gearing to 5.2..........or go for 225/250cc...........

[ArKaTxU]

maybe change your gearing to 5.2..........or go for 225/250cc...........

Sorry but i dont know anything about how works the gears on the Lambrettas
I thought that the RB20 and this exhaust is ok with 4.6 to 5.0

[bazman]

I would have thought the li box and that ratio along with the tourer exhaust would be ok.
Personally i'll be going with the af close ratio box and franspeed race along with 30mm delly and maybe ratio of 4.8

[ArKaTxU]

I would have thought the li box and that ratio along with the tourer exhaust would be ok....

with the li std 5.2 box? or the 5.0 ratio with 16x47?

[bazman]

I would have thought the li box and that ratio along with the tourer exhaust would be ok....

with the li std 5.2 box? or the 5.0 ratio with 16x47?

5.0 IMO.

[sean brady scooters]

this may sound a bit strange........but i now know from experience.......that if someone tells me they weigh 16 stone............in reality they may well be 18/19 stone....
likewise .........if they say .....i,m only 12 stone...........they will be now 14.........
unless someone has just weighed themselves the day before............and not THREE years ago..........take it as a pinch of salt.............meaningless ..in terms of tuning scoots and recomending set ups/gearing.............

[ArKaTxU]

this may sound a bit strange........but i now know from experience.......that if someone tells me they weigh 16 stone............in reality they may well be 18/19 stone....
likewise .........if they say .....i,m only 12 stone...........they will be now 14.........
unless someone has just weighed themselves the day before............and not THREE years ago..........take it as a pinch of salt.............meaningless ..in terms of tuning scoots and recomending set ups/gearing.............

You are right! but not my problem
I am 16 stone because i am 2 meters tall

[bazman]

this may sound a bit strange........but i now know from experience.......that if someone tells me they weigh 16 stone............in reality they may well be 18/19 stone....
likewise .........if they say .....i,m only 12 stone...........they will be now 14.........
unless someone has just weighed themselves the day before............and not THREE years ago..........take it as a pinch of salt.............meaningless ..in terms of tuning scoots and recomending set ups/gearing.............

I just weighed myself after 1st post.....wheres that slim fast gone
Still going for 4.8 on mine though!!

[bazman]

this may sound a bit strange........but i now know from experience.......that if someone tells me they weigh 16 stone............in reality they may well be 18/19 stone....
likewise .........if they say .....i,m only 12 stone...........they will be now 14.........
unless someone has just weighed themselves the day before............and not THREE years ago..........take it as a pinch of salt.............meaningless ..in terms of tuning scoots and recomending set ups/gearing.............

You are right! but not my problem
I am 16 stone because i am 2 meters tall

Yeah but how wide