Wassell / Penton / Tyron

[mad max]

Can anyone tell me how many teeth there should be on the front & rear spockets of a 1974 125 sach Wassell trials bike ? regards NIGEL.(UK)

[jchev]

Nigel, I have a 73 penton trials that has a 72 tooth on the rear and a 13 tooth on the front.  I have had this one for almost 30 years. The rear has never been changed  but not so sure about the front.

Jeff Chevalier

[Lew Mayer]

I have two of them here. They both have 12/64 teeth.Check with Dennis Jones. He has the most trialers of anyone I know.

Lew Mayer

[Dennis Jones]

I have a low hours bike that has a 14/64. On my competition bike I am running 11/62. If you are going to ride trials you will want to get it geared low. If it is a resto be carefull not to get the rear to large for the chain guide and chain gaurd.

Dennis Jones