Hey guys,
In the process of building a postie bike as a weekend parts runner.
Just wondering if any company's are making a 5 speed pit bike engine?
The plan is to swap out the motor for a 160 or even a 190. The problem is, I rode a friends postie with a 140 which was great fun, but it was topping out at avout 70ish k's. Most of the roads around me are 80. So that would have to be the minimum as it would see regular use.
If not, has someone got a formula to work out sprocket sizes vs rolling diameter?
Cheers, Ben.
In the process of building a postie bike as a weekend parts runner.
Just wondering if any company's are making a 5 speed pit bike engine?
The plan is to swap out the motor for a 160 or even a 190. The problem is, I rode a friends postie with a 140 which was great fun, but it was topping out at avout 70ish k's. Most of the roads around me are 80. So that would have to be the minimum as it would see regular use.
If not, has someone got a formula to work out sprocket sizes vs rolling diameter?
Cheers, Ben.