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Old 03-08-07, 10:34 AM   #1
Jorin
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Brake modification for bent

I have an Optima Baron that I am converting to 700c (to take advantage of my race wheels). Does anyone have a suggestion on how to modify a brake system to allow the 26" brake bosses to work properly with a 27" wheel? I am not worried about the front, as I will be changing the fork...

If I can't find a good system, I guess I will go 650c all around, but it would not be my first choice.

Happy riding!
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Old 03-08-07, 10:59 AM   #2
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Are there any brakes available, that are made for this purpose?
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Old 03-08-07, 11:29 AM   #3
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I cannot fit a 700c wheel on my Baron - the brake bridge is too close. Are you saying that your brake bridge will allow it? Obviously, disc brakes completely eliminate that issue, but your race wheels probably aren't disc-compatible.
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Old 03-08-07, 11:58 AM   #4
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Quote:
Originally Posted by BlazingPedals
I cannot fit a 700c wheel on my Baron - the brake bridge is too close.
Same here. I do run a 650C wheel in the back with a Shimano 600 brake.
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Old 03-08-07, 12:55 PM   #5
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Quote:
Originally Posted by jeff-o
Are there any brakes available, that are made for this purpose?

With Paul Motolite Z brakes you can move the pads up and down the brake arm, but I don't know if they can go from 26" to 700c.

http://webcyclery.com/product.php?pr...cat=285&page=1
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Old 03-08-07, 01:19 PM   #6
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Check out Paul Moto BMX brakes, they are just like the Motolite Zs but with a wider range of adjustment.

http://www.paulcomp.com/motobmx.html

Last edited by Recumbomatic; 03-08-07 at 03:08 PM.
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Old 03-08-07, 02:09 PM   #7
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Quote:
Originally Posted by BlazingPedals
I cannot fit a 700c wheel on my Baron - the brake bridge is too close. Are you saying that your brake bridge will allow it? Obviously, disc brakes completely eliminate that issue, but your race wheels probably aren't disc-compatible.
I should amend what I wrote. discs will eliminate the problem of locating the brakes, but if the bridge is so close that you can't fit the wheel, then you're SOL. I recommend using 650c if you're going to try big wheels. If the experiment is a flop, you can at least keep the 650C on the rear.
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Old 03-08-07, 04:37 PM   #8
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700c on a Lynxx

The Lynxx does not suffer from the same limitation with the brake boss as the Baron. It is set up for v-brakes, and there is ample clearance for a 700c wheel, as I have had one on in the trainer with no problems at all...

I have checked the fit in light of how much higher the bike will be with the 700c wheels... it is going to be a bit of a stretch, but I am using it for highway miles, so I am not forseeing a problem... provided I can get the brake system to work. I had though of discs as well, but that rules out my 6500 wheels...

Thanks for the help. the Paul Motolite BMX brakes look EXACTLY like what I need... thanks!
Jorin
ps. I will post pictures when I am done...
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Old 03-08-07, 07:26 PM   #9
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No problem. I might upgrade my highracer to 700c too. Niagara Cycle Works has them for $104 + shipping.

http://www.niagaracycleworks.com/pro...BMX-V-Type.htm
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Old 03-14-07, 11:45 AM   #10
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I think these would work too:

http://cgi.ebay.com/BMX-Bike-Brakes-...QQcmdZViewItem
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