crank arm for tongsheng

[neilhapgood]

Hi all, I was cycling today and the pedal fell off!

The thread is completely gone on the crank arm where the pedal screws in, worth noting I have done thousands of miles on the bike and love it so not a complaint about quality.

Can I use any crank arm to replace it or does it need to to have a sloght curve in it to clear the motor?

Thanks!

 

[matthewslack]

Hi all, I was cycling today and the pedal fell off!

The thread is completely gone on the crank arm where the pedal screws in, worth noting I have done thousands of miles on the bike and love it so not a complaint about quality.

Can I use any crank arm to replace it or does it need to to have a sloght curve in it to clear the motor?

Thanks!

Kona Ute tsdz2 conversion

A quick read shows the steel is soft enough to work/cut on a home lathe and even welding does not work, one guy has even had a replacement machined from scratch and re designed the bearings it seems a lot of effort

www.pedelecs.co.uk

Post #34 on the above thread for something that works, and earlier for description of the issue.

 

[Sturmey]

Is it the left or right crank? If its the left, it should be easy enough to get a replacement crank e.g in your local bicycle shop etc.. Getting a right crank (without chainwheel) is more difficult. It is possible to use a standard alloy or steel crank on right side by grinding off the chainring.

 

[Nealh]

The tsdz uses a std spider bcd so one should be able to find a spider/crank to suit.