Pinch torque arm

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cwah   10 GW

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Pinch torque arm

Post by cwah » Mar 21 2018 7:25pm

I need torque arm with minimum play. Pinch torque arm would be good. Anyone sell these?
Help me find my stolen electric brompton: http://bit.ly/1a0vbBC and Bosch Sinus B3 http://bit.ly/1eV0WQz

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tomjasz   1.21 GW

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Re: Pinch torque arm

Post by tomjasz » Mar 22 2018 2:18am

cwah wrote:
Mar 21 2018 7:25pm
I need torque arm with minimum play. Pinch torque arm would be good. Anyone sell these?
Just Grin V2 here.
Thanks Justin_le we're here thanks to you. All the best to the mods for their tireless work keeping it on an even keel.

cwah   10 GW

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Location: Between paris and london

Re: Pinch torque arm

Post by cwah » Apr 16 2018 6:48pm

tomjasz wrote:
Mar 22 2018 2:18am
cwah wrote:
Mar 21 2018 7:25pm
I need torque arm with minimum play. Pinch torque arm would be good. Anyone sell these?
Just Grin V2 here.
The grin V2 torque arm isn't pinch and not good for motors with regen
Help me find my stolen electric brompton: http://bit.ly/1a0vbBC and Bosch Sinus B3 http://bit.ly/1eV0WQz

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tomjasz   1.21 GW

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Re: Pinch torque arm

Post by tomjasz » Apr 17 2018 1:48am

cwah wrote:
Apr 16 2018 6:48pm


The grin V2 torque arm isn't pinch and not good for motors with regen
Works great, one installed as designed and one reversed. Running for 3 years. 2500 miles. Just a 1000W MXUS at 52V 25A buttoning regen.
Thanks Justin_le we're here thanks to you. All the best to the mods for their tireless work keeping it on an even keel.

cwah   10 GW

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Posts: 4130
Joined: Jul 24 2011 5:42am
Location: Between paris and london

Re: Pinch torque arm

Post by cwah » Apr 17 2018 2:44am

tomjasz wrote:
Apr 17 2018 1:48am
cwah wrote:
Apr 16 2018 6:48pm


The grin V2 torque arm isn't pinch and not good for motors with regen
Works great, one installed as designed and one reversed. Running for 3 years. 2500 miles. Just a 1000W MXUS at 52V 25A buttoning regen.
How do you do that? I have 2 torque arm mounted reverse to each other and there are still wiggle when using regen vs acceleration
Help me find my stolen electric brompton: http://bit.ly/1a0vbBC and Bosch Sinus B3 http://bit.ly/1eV0WQz

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pwd   100 W

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Re: Pinch torque arm

Post by pwd » Apr 17 2018 2:58pm

I bought a solid torque arm from here (there is a clamping option in there too):
https://endless-sphere.com/forums/viewt ... 31&t=69073

I've been using it with regen and its been solid, even without being clamped.
Current Build:
Rocky Mountain Element
Magic Pie 4 front + Leafmotor 1500 rear w/ WCEC 18fet
em3ev 14S5P 30Q + 14S6P 25R pack

Old Build:
GIANT ATX 980 w/ Cycle Analyst v2.25
Golden Motor Magic Pie (internal controller) X2
14S3P 15aH: 6X 6S 5000mAh + 3X 2S 5000mAh LiPo packs
My thread: http://endless-sphere.com/forums/viewto ... 5&p=693208

cwah   10 GW

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Re: Pinch torque arm

Post by cwah » Apr 20 2018 6:58am

I decided to make my own as getting 2 drilled and shipped would have cost me over $100!
https://endless-sphere.com/forums/viewt ... =3&t=93849
Help me find my stolen electric brompton: http://bit.ly/1a0vbBC and Bosch Sinus B3 http://bit.ly/1eV0WQz

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tomjasz   1.21 GW

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Re: Pinch torque arm

Post by tomjasz » Apr 20 2018 8:37am

cwah wrote:
Apr 17 2018 2:44am
tomjasz wrote:
Apr 17 2018 1:48am
cwah wrote:
Apr 16 2018 6:48pm


The grin V2 torque arm isn't pinch and not good for motors with regen
Works great, one installed as designed and one reversed. Running for 3 years. 2500 miles. Just a 1000W MXUS at 52V 25A buttoning regen.
How do you do that? I have 2 torque arm mounted reverse to each other and there are still wiggle when using regen vs acceleration
Perhaps you run faster than I do. Old and slow here...
Thanks Justin_le we're here thanks to you. All the best to the mods for their tireless work keeping it on an even keel.

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