Torque Arm Training Wheels

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Also that is probaby soft metal. Are you using a rear hub? How much power?

Just go to your Homeless Despot and grab some 1/4" steel and your angle grinder, grab some hose clamps and call it a day.

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it wont hold up to regen, theres a torque arm picture thread with a lot of good ideas
https://endless-sphere.com/forums/viewtopic.php?f=2&t=26444

the main thing with the arms isn't even how hard the metal is. it is how precisely the axle flats fit the arm faces. if there is any slop, the axle will either rock or cut into the face of the arms, whcih will eventually let the axle rotate inside the arm.


regarding different metals and their hardnesses...aluminum *can* be soft, but there are quite a few different alloys and treatments of them, resulting in many different hardness levels (and other properties). some of them are harder than some steels.

also...if you have a soft steel, you can harden it to some degree with heating and cooling at the right rates and amounts (same with aluminum). (even harder surfaces can be made with carbon applications, "case hardening", etc, but those may not be within a particular diyer's capabilities, where the simple heating and cooling often is).



for those that havent' seen it, there is a torque arm picture thread with a lot of examples.
https://endless-sphere.com/forums/viewtopic.php?f=2&t=26444

to the op, you may wish to post the details of exactly how you use these, and their origin, in that thread for others to find.

I've made some torque arms out of shelf brackets, which are soft steel.

I think the benefit is that the metal holding the axle is doubled in thickness, and my arms are bolted to a chain stay, not held with a hose clamp.

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I am having luck with the generic slotted rear derailleur hangar.


I cut the hangar off the rd that broke on me and eyeballed the other side, but never bothered to do anything.

apparently the op is yet another "hissy fit self-deleter".

(they've self-deleted their posts and pics)

Many forums disable the ability to do that after time has passed