What kind of torque arm for 1000 watts 48v mountain ebike?

B

Blueshift

100 W

Joined

May 29, 2011

Messages

176

Location

California

• Jan 14, 2021

• #1

Hi there. Will any torque arm do for this bike? Any particular recommendations? I am pretty sure the forks are aluminum alloy. Is a torque arm really needed? Thanks in advance.

https://imgur.com/a/lGhE68g

 

J

john61ct

1 TW

Joined

Dec 18, 2018

Messages

8,758

• Jan 14, 2021

• #2

Likely need very rigid steel forks there, never heard of any aluminum being strong enough to be safe

Were you thinking of doing regen?

 

E-HP

10 GW

Joined

Nov 1, 2018

Messages

6,359

Location

USA

• Jan 14, 2021

• #3

Blueshift said:

Hi there. Will any torque arm do for this bike?

Click to expand...

Any torque arm will do if you don't need a torque arm, since the cheap stamped steel ones are pretty crappy with respect to offering protection. To be effective, the TA has to have a transition fit with the axle flats, so there's no movement.

 

A

aroundqube

10 kW

Joined

Mar 12, 2012

Messages

577

• Jan 14, 2021

• #4

Perhaps you will find this tutorial useful : https://ebikes.ca/product-info/grin-products/torque-arms.html