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Old 12-11-09, 06:32 PM   #1
Snowsurfer
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Disk Brakes

Does anyone run disk brakes on their ebike?
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Old 12-11-09, 07:08 PM   #2
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Does anyone run disk brakes on their ebike?
One of my winter projects is installation of a disc brake on my front wheel, which will mean changing out the fork, too. Many pre-built e-bikes are now coming with disc brakes. Anyone planning on installing a powerful motor that can propel them to 30 MPH or faster really needs disc brakes. You can retrofit the front brake on most bikes with V brakes if you change out the fork. However, it's almost impossible to retrofit rear V brakes and most bicycle manufacturers discourage attempts to retrofit rear V brakes with disc brakes.
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Old 12-11-09, 07:44 PM   #3
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I have disc brakes on mine. Of course, the disc brakes came on the bike before I converted it to an e-bike.

One way that I know of to retrofit V brakes on the rear is to get a Free Radical. Then you have a completely different animal. Lots of fun, but different.
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Old 12-11-09, 11:01 PM   #4
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I put an BionX equipped FreeRadical on the rear of my bike so now I have a 203mm disc brake on the rear, V brakes on the front, and the electric brakes through the BionX system.
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Old 12-12-09, 12:28 AM   #5
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I put an BionX equipped FreeRadical on the rear of my bike so now I have a 203mm disc brake on the rear, V brakes on the front, and the electric brakes through the BionX system.
I want to put disks up front. I do have to get a new wheel though. The current hub doesn't allow for it.
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Old 12-12-09, 06:34 PM   #6
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I want to put disks up front. I do have to get a new wheel though. The current hub doesn't allow for it.
Yes, you may need to get a new fork too if your current one doesn't support disc brakes. Even having to buy a new fork and new wheel, my install will be under $300 since I'm doing the work myself.
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Old 12-12-09, 09:21 PM   #7
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Yes, you may need to get a new fork too if your current one doesn't support disc brakes. Even having to buy a new fork and new wheel, my install will be under $300 since I'm doing the work myself.
Nah, the fork is good. The fork has IS mounts.

I am contemplating rebuilding the wheel into a new disk hub, or getting a new wheel altogether.

But 203mm rotors all the way. I needed so much stopping distance today, was going in excess of 55km/h.

I had to do a longboard style footbreak to stop in time.
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Old 12-13-09, 06:24 PM   #8
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I run 203mm discs back and front, best thing I ever did. Interloc dual banger mechanical calipers.
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Old 12-13-09, 09:31 PM   #9
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I run 203mm discs back and front, best thing I ever did. Interloc dual banger mechanical calipers.
What motor are you running?
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Old 12-15-09, 02:01 AM   #10
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Disc brake in front is important to me because the extra weight + 1 pillion makes it harder to stop.
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Old 12-15-09, 10:25 PM   #11
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What motor are you running?
Ecospeed mid-drive on a Rans Stratus XP.
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