Alternative brakes?

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andreashb   10 mW

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Alternative brakes?

Post by andreashb » Oct 16 2017 5:13am

Hi, I have recently installed a 3000w kit (mxus) on my bicycle. (btw it is crazy fast!!). But I cant seem to fit my rear brake calipers. I wont even fit the disk because it is so small space. I have tried to bend the frame, but I will not bend anymore incase it breaks. I wondered if it was possible to install v-brakes? Or do you have to have special rims to fit v-brakes? Is there any other brakes that could be used? Thank you in advance. ImageImageImageImage

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dogman dan   100 GW

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Re: Alternative brakes?

Post by dogman dan » Oct 16 2017 6:37am

Regen rear brake might be your best option, after the better one of get a frame you can adapt better.

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Chalo   100 GW

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Re: Alternative brakes?

Post by Chalo » Oct 16 2017 8:11am

Your rim is compatible with a rim brake. You can mount a v-brake with an adapter plate,
Image
or you can get a caliper brake of sufficient reach, probably 79-99mm.
Image

Which of these options is easier depends largely on what kind of brake lever you are using. If it's long pull, get a v-brake plate. If it's short pull, use a caliper.

And keep in mind that most of your braking power comes from the front brake. The faster you go, the more you should rely on the front brake.
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MadRhino   100 GW

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Re: Alternative brakes?

Post by MadRhino » Oct 16 2017 1:34pm

The drop outs are not parallel with your motor, and the articulated torque arm is weak. I wonder why the fit is so much wider than your dropout width. Either your frame is narrower than the usual 135 mm, or you did something wrong on the other side. With a single freewheel, the motor should fit 135 mm and let you use a disc brake.
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markz   100 GW

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Re: Alternative brakes?

Post by markz » May 25 2018 12:03pm

Chalo wrote:
Oct 16 2017 8:11am
Your rim is compatible with a rim brake. You can mount a v-brake with an adapter plate,
This is very interesting to me because I have a "recessed mounting" center pivot on the rear brake bridge. Had a traditional (mount hole goes all the way through the bridge) brake laying around. Recessed has threaded hole that does not go through. Anywho, I cut up a junk bikes fork that I was planning to hose clamp to the rear.

The adapter plate I have read in mtbr forum, but was unable to find anything cheaply or from Chain Reaction Cycle (cheap s/h to Canada). Makes me wonder if center pivot has the same braking power as V-brake.

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