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Old 02-14-11, 10:57 PM   #1
dangercoyote
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Rim Brake on Disk Brake Dual Hub?

So I just won a Sram Dualdrive ll on ebay (under $200, woohoo!) for my D7. It says it has "Universal 6 bolt rotor Disc Brake Compatibility." So, my question is: Can I build it with a regular rim and use a rim brake, or is it disk brake only? I imagine the answer is yes, but you never know with these things. Sorry if it's a dumb question.
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Old 02-14-11, 11:39 PM   #2
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I'm not a bike mechanic however I can't see why this wouldn't work. Essentially you would just build the wheel without attaching the rotor to the hub, how could that possibly cause any problems?
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Old 02-15-11, 12:36 AM   #3
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Yep that will be fine, just use a rim brake rim.
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Old 02-15-11, 12:52 AM   #4
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just don't mount the disc, there is a plastic cover that obscures the mounting holes on the new hubs,
should ship like that.
you can fill the threaded holes with setscrews of the same thread size,
to cover and keep the threads clean..
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Old 02-15-11, 03:27 PM   #5
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Thanks guys. That's what I figured, but just wanted to make sure. And thanks for the tip on the setscrews fietsbob.
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Old 02-15-11, 03:58 PM   #6
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Can you use a rim that was orginially made for hydraulic brakes with cantilevers or v-brakes
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Old 02-15-11, 04:34 PM   #7
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Quote:
Originally Posted by Elad63 View Post
Can you use a rim that was orginially made for hydraulic brakes with cantilevers or v-brakes
A rim made for disc brakes (cable or hydraulic) is not designed with a braking surface, so these cant' be used for rim brakes.
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Old 02-17-11, 12:52 AM   #8
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Yes, it will work!

I've used a DualDrive hub for commuting during the winter months for 6 years now. I've used it both with and without a disc (though WITH discs is definitely better for our climate!) and it will be fine either way. As already mentioned, just make sure not to build it up with a disc-specific rim.
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Old 02-17-11, 03:57 AM   #9
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I've used a DualDrive hub for commuting during the winter months for 6 years now. I've used it both with and without a disc (though WITH discs is definitely better for our climate!) and it will be fine either way. As already mentioned, just make sure not to build it up with a disc-specific rim.
Thanks for that. You got me thinking, perhaps (in the far future) I could mount a disk brake... maybe even as a 3rd brake? Can I mount a disk after the wheel is built? And a disk only rim wouldn't be necessary would it?
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Old 02-17-11, 11:05 AM   #10
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a rim with a braking surface can be ignored, with a disc brake, like the reverse,
6 mounting holes can be ignored if not bolting up a disc.

Seems like above post says I need the services of a bikeshop.
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Old 02-18-11, 01:04 AM   #11
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Yes you could, but on any application except a tandem or cargo bike it would be overkill, especially on the rear.
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