Torque Arms Installation On Front Wheel Motor

[BatteryMan]

I'm installing a motor on the front wheel of my bike and I can't figure out if the torque arms should be installed in front of the fork or behind the fork on the front wheel. The more I read about it, the more confused I get because people say both ways is correct.

Which way is really the correct way?

In front of the fork or behind the fork?

 

[Chalo]

The axle twists in the opposite direction as the wheel. So if you're using a multi piece TA, best put it behind the fork leg so it gets pulled straight instead of folded. That said, I think multi piece TAs are dumb and ineffective compared to single piece TAs.

Here's one example of how I tackled the problem:

torque arm picture thread

I'm posting here as a warning to anybody who might, like me, try out these torque arms from Amazon: https://www.amazon.com/ColouredPeas-Bicycle-Accessories-Electric-Conversion/dp/B07XZ2JZ5R I ordered two for a customer's project. They shipped fast, the price was right, and they looked a lot...

endless-sphere.com

 

[BatteryMan]

Thanks for the quick reply, I appreciate it.

I'm going to use two of these torque arms behind the fork. I was reading these are way better than the other ones (the silver cheap looking ones) that the original manufacturer stopped making them but the Chinese continue to sell.

 

[99t4]

I was reading these are way better than the other ones (the silver cheap looking ones) that the original manufacturer stopped making them but the Chinese continue to sell.

Possibly. The color of the material doesn't matter. The most important part of the equation is that the section that slides onto the axle must fit the axle tightly. NO SLOP at all. Otherwise the axle can start to rock back and forth, eating away a bit more and more each time until it can spin completely.