lambretta gearbox advice

[rocho68]

help !!!!!!!!!!!!!!!!!!!!!!!! mates got a 175 lammy , stripped her down to find 15 x47 and a vijay 150 gearbox , now the question is this ............... we have a spare li125 gearbox , a spare 46 crownwheel and 16 , 17 front sprockets , what would be the best set up , also engines a mick abbey tuned barrel , clubman and 25mm dellorto :bouncing:

[ForemanBob]

I'd go 16 46 on the Vijay box.... as a personal preferrence.

Need a slightly stretched chain though...

Get yourself a hold of the gearbox visualiser for excel, and it'll give you a chance to play with a number of combinations to give you your desired output.

[jonny snatchsniffer]

if its the late type li125 i would use that and depending on the tune a 16/17 46 combo