3 replies to this topic

[Greeves]

Hi: I have to order front and rear sprockets for my 250 James Villiers 37A but can´t check the teeth number untill at least 15 days at the bike is not at home.

I remember the rear sprocket has a 64 teeth. Somebody knows the front one ¿?

Thanks !!!

Edited by Greeves, 15 February 2010 - 07:38 PM.

[Old trials fanatic]

Greeves, on Feb 15 2010, 07:37 PM, said:

Hi: I have to order front and rear sprockets for my 250 James Villiers 37A but can´t check the teeth number untill at least 15 days at the bike is not at home.

I remember the rear sprocket has a 64 teeth. Somebody knows the front one ¿?

Thanks !!!

Hi Javier sorry i missed you at the Telford show. Normal gearing on a 428 chain is 12 or 13 front. I run 12 front and 60 rear but if you are running a 64 rear assuming you are on a 428 chain then a 13 may be appropriate. Also depends on your crank sprocket but it's probably a std one 20 tooth i think so the above applies.

Take care

[Greeves]

Thank you Paul. I went to Telford just Saturday, but 8 hours there. I would had walked around for a couple of hours more. Fantastic.

Hope to see you soon.

[TrialsRfun]

Std primary sprocket setup then 13/62 or 13/64 on the rear. Simon Bateman (Nametab Engineering) now produces a 520 gearbox sprocket for the Villiers 37a and Talon will provide a suitable rear for your hub.