Torque washers

I was tidying my garage a couple of years ago and threw this weird useless object out. What a mistake to make! I now only have one for my Bafang motor. Its 10mm between the flats and 12mm between the arches. Anyone know where I can get another? The bent steel sort won't work as the tab is outside the end of the dropouts.

For the really decent ones like that Bafang one or similar AKM ones, one has to buy from China, usually one has to buy the whole wheel nut set.

e-bike brushless dc hub motor anti-torque washers for fixing engines-Greenbikekit.com BBS, ebike batteries, Bafang M620, Bafang M600, Bafang M500, Bafang M510, KT controller with display-GreenBikeKit.com

Screw Electric Bike Parts Nuts With Washers Electric Bike Hub/motor Axle 12mm Lock Nut+ Washer+spacer Set - Electric Bicycle Accessories - AliExpress

E bike Hub Motor Nuts Kit Replacement Electric Bicycle Front Rear Wheel Lock Nuts Motor Axle Bolt Screw for Cycling Component|Electric Bicycle Accessories| - AliExpress

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I was tidying my garage a couple of years ago and threw this weird useless object out. What a mistake to make! I now only have one for my Bafang motor. Its 10mm between the flats and 12mm between the arches. Anyone know where I can get another? The bent steel sort won't work as the tab is outside the end of the dropouts.

I got the same one as this from from Woosh bikes , they are a regular forum contributor on here.

https://wooshbikes.co.uk/

I got the same one as this from from Woosh...

https://wooshbikes.co.uk/

They don't show these in their online shop, so I've emailed them.

https://www.ebay.co.uk/itm/144472651429?hash=item21a33db6a5:g:EewAAOSwyudghbVy&amdata=enc%3AAQAHAAAA8AIpCVqzYC5uOI0TldvMbLfkNj0kpJDV6xQyh12Zkqh%2FKKRmbOYKVYpwcw6Ipf99KQErOvT2z3OH73f0%2BnADY4zyhTKtjbu%2FUMrdgmmfZ1kp%2FGS%2BKQQ%2FhzklYWogK1b7%2BRG8wLRYOoqsLLus4sOCIILexpZj55kV4MCsb7ekxMC%2F6W%2FcOT5lbGf%2BtHNhBISyWcoox%2B79j%2Fd7jqYhotBepW6wq3aPJy5BPfwVqIMzmfgxCNxU0IjW3YVRlDVvMqDDil%2BbSLJRNxIhN5Ir6etE9IwKAhKRbUwrJmf0kJWFKgMNuDhqxyG90nN%2F0ymbf1IxKg%3D%3D%7Ctkp%3ABFBMgKD8z8hg

Torque arms are a belt and braces after option but not the answer to torque washers, the torque washers are needed as they act as a spacer and axle locator much like the coloured ones used with nexus/alfine hub gears.

one has to buy from China

I had a look at your links. One was charging a ridiculous amount for postage*, the other two a fair bit, and the delivery time was one to two months, so I'm hoping joelectric's recommendation will work. They could be useful in the future though, as may Green Bike Kit who I haven't tried.

Torque arms are not the answer to torque washers...they act as a spacer

Very true, as the flattened bit of the shaft on one side of my motor is recessed within the hub. Also the hub would rub on the fat suspension forks without them.

and axle locator

Torque arms are a belt and braces...option.

True, I don't think they are needed on my 250W bike on the road and my friends' bikes haven't got them. Edit: And a standard torque arm would not fit - see next post.

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*£10-20, I can't remember and they only show postage after you've got most of the way through the ordering process, so I can't be bothered to check.

Edited July 29, 20223 yr by ChrisOfBristol

A standard torque arm would not fit. The part of the axle which has the 10mm flats is only about 4mm long. On one side it is recessed into the hub, so the arm would not make proper contact. On the other the hub is flat and the arm would have to be flat against the hub, so there would be no space behind it for the bolt head or nut to connect to the arm that connects to the fork. It would only be possible if a special arm was made with either a welded on bolt or with a joggle to take it away from the hub.

I have considered a torque arm for two reasons:

• My bike has aluminium suspension forks and I will probably try the local mountain bike trail, so I am wondering whether extra strength might be needed for that. There wouldn't be any extra torque from the motor, but some might come from shocks resisting motor rotation. I'd be interested in comments on this.
  
• It would make it harder for a thief to steal the electric hub. I'd be interested to know whether anyone has had this happen.
  

Edited July 29, 20223 yr by ChrisOfBristol

My Bafang G370 is the same one can't fit T/A's and only torque wahers. The G370 one cna only use one washer on the non cable side as the cable entry interferes with the washer fitting, for that reason I have some very nice Surly steel forks.

For 250w T/A's can be dispensed with in steel forks.

One could try a T/A fitted inboard if one can sercue the end to a threaded hole.

From the messages I'm reading, I'm getting concerned about having aluminium forks, so am looking into torque arms again.

I could try bending the arm away from the hub, but I think it would be too thick to make a big enough bend in its short length. I could also try an arrangement like this:

I'd have to tap the torque arm and I'd probably araldite the allan bolt nut and torque arm together as the 4mm arm is a bit thin for this really. Ideally a bolt should be welded into the torque arm.

https://www.amazon.co.uk/gp/product/B06XFK4FBB

The vital 10mm bit is right, whereas the 14mm versus your 12mm is a bit large, but since it's all clamped together in use it may not matter. Might be worth a £5 punt...

I managed to get some torque washers (+ nuts and plain washers) which match the originals for £6 on ebay. I've been riding on mountain bike trails without any problems, so I think aluminium forks may only be a problem with higher power motors.

[solved]

aluminium forks

I changed my front suspension folks for rigid steel. Not all torque/ anti-rotation washers are created equally. I have a collection and they are nearly all different, slightly.

I got the last rare t-arm from some trade rep in here, off hand I can't remember the company, long gone, UK anyway, amazing style. Dillenger do t-arms but price and stock maybe an issue.

Edit; Can't think of the name, I want to say cycle eeze. It has a multi point star at the axle for directional positioning.