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Old 01-14-09, 11:16 AM   #1
Tpb10505
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Dual Disk front hub help

Hi all, new to the forum here. I am trying to find a dual disk front hub, but have been having some difficulty locating one here on the interweb. I want to use it for a e-bike build, but i figured if anyone would know this would be the best place to start lol. Thanks for any and all help!

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Old 01-14-09, 11:34 AM   #2
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None that I am aware of, since no MTB forks have bosses for dual discs yet. No such thing as a flip-flop front either as far as I can find. BUT - - First Principles makes a disc/flange adapter that you could attach to the drive side of a front disc hub to make it dual-disc:



http://www.firstprinciples.ca/products.html
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Old 01-14-09, 11:38 AM   #3
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Is this for show, or do you believe a dual disc would be necessary for an e-bike? My KTM goes 100 mph and it manages quite well with a single front disc.
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Old 01-14-09, 11:45 AM   #4
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Is there any way to set it up so that one brake lever can operate two calipers? Are the reservoirs large enough for that?
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Old 01-14-09, 11:48 AM   #5
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Is this for show, or do you believe a dual disc would be necessary for an e-bike?
Oh, I was thinking it was maybe going to be a twin-engine affair .
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Old 01-14-09, 11:50 AM   #6
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Its not about stopping. I want to use a dual disk on the rear, so i can attach a disk brake to one side, and a sprocket to the other. The pic shows the same setup, the guy has a disk one on side, and the driven sprocket on the other. Thanks for the link dminor

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Old 01-14-09, 12:02 PM   #7
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aha! I saw the pic of the rear and figured you had that under control already.
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Old 01-14-09, 12:13 PM   #8
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aha! I saw the pic of the rear and figured you had that under control already.
That's what I thought too.
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Its not about stopping. I want to use a dual disk on the rear, so i can attach a disk brake to one side, and a sprocket to the other. The pic shows the same setup, the guy has a disk one on side, and the driven sprocket on the other. Thanks for the link dminor
You're welcome. I understand now - - you said front hub so it threw me. You can get a similar effect bysandwiching the spokes on the drive side of, say, a single-speed disc hub with a pair of rings made from "-thick conveyor belt rubber drilled for your sprocket and passing bolts through to pull it all together. then it gives the sprocket a bit of rubber-snubbed shock-mounting too. I've seen that used on a lot of Whizzer-like motor bike conversions.
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Old 01-14-09, 12:20 PM   #9
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Sorry about that, i should've clarified. I've tried asking the guy who built the bike in the pic but never got a reply. From the pic it looks like once piece without an add on rotor hub but I cant find anything like it anywhere.
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Old 01-14-09, 04:04 PM   #10
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Phil Wood could do you up a custom one, but it won't be cheap.

You need a fixed gear hub with a disc brake mount. Again, take a look at Phil Wood for that. I'm assuming because you want to run a fixed drivetrain with a disc brake, yes? or something else in mind?

Not sure if any are out there otherwise, but that's likely going to be easier to find (and cheaper if you have to custom do one) than a dual disc mount rear.
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Old 01-14-09, 05:31 PM   #11
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Thanks for all the help. I found this, and its pretty much all i can find. I hope 140mm will fit the frame ive got?

http://www.choppersus.com/store/prod...al-Disc-Black/

On an off topic for the noob bike builder... will all forks fit all frames? im looking to put a mtb fork on this vintage frame to smooth the ride a bit.

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Old 01-14-09, 05:53 PM   #12
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Thanks for all the help. I found this, and its pretty much all i can find. I hope 140mm will fit the frame ive got?
I hope so too. Although I would probably measure the frame, you know, just to be sure???

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On an off topic for the noob bike builder... will all forks fit all frames? im looking to put a mtb fork on this vintage frame to smooth the ride a bit.
No, there are at least four different head tube diameters. Your fork of choice must be compatible with your frame.

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Old 01-14-09, 06:16 PM   #13
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The frame will be here tomorrow, so ill be able to check the width then. Thanks for the info
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Old 01-17-09, 03:28 AM   #14
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I would just run the fattest tires you can find in that frame. http://www.schwalbetires.com/big_apple that is a good place to start
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