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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 01-22-11, 06:18 PM   #1
Tristanh666
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Building my first single speed but i need help

Hey guys i bought these ultrega br 6600 breaks for my old pugeot road frame but they dont fit. Is there any way for me to get them on?
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Old 01-22-11, 06:30 PM   #2
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How come they dont fit? Pictures? What size wheels. What brakes style is on the fork?
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Old 01-22-11, 07:22 PM   #3
Tristanh666
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Noy sure about the fork but my wheels are 700c and what i ment to say was the screw at the back of each break doesnt go all the way through my frame
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Old 01-22-11, 07:27 PM   #4
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The new Ultegra calipers were designed to be mounted in a fork and frame drilled for a recessed bolt. The frame you are using is probably not designed for this type of bolt, it might have been designed for nutted bolts that are longer and go through the frame.

To fix your problem we need pics, it may br possible to dril out the frame or change the calipers around to you can use them as nutted calipers.
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Old 01-22-11, 07:31 PM   #5
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This is the difference between the two types, the nutted type is much longer.
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Old 01-22-11, 07:48 PM   #6
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The new Ultegra calipers were designed to be mounted in a fork and frame drilled for a recessed bolt. The frame you are using is probably not designed for this type of bolt, it might have been designed for nutted bolts that are longer and go through the frame.

To fix your problem we need pics, it may br possible to dril out the frame or change the calipers around to you can use them as nutted calipers.
In addition to this, I would bet the Ultegra calipers you bought have much too short a reach for your frame. Older frames generally had longer reach brakes. Reach: http://www.sheldonbrown.com/calipers.html#reach

Again, we need pictures to tell you if these brakes will even work or not.
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Old 01-22-11, 08:09 PM   #7
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Ugh dang they are recessed i should done more reading. Ill put pictures up asap. Is there any issues i should know about that wont let me drill the hole a little bigger to fit the breaks
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Old 01-22-11, 08:11 PM   #8
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I drilled out the back of my peugeots brake mounts to fit the recessed kind. Not that difficult to do and it worked out just fine.
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Old 01-22-11, 11:12 PM   #9
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Would it look silly if i put new breaks on an old frame?
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Old 01-23-11, 12:02 AM   #10
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Would it look silly if i put new breaks on an old frame?
It might, but who cares? If it works, ride it.
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Old 01-23-11, 12:07 AM   #11
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I drilled out the back of my peugeots brake mounts to fit the recessed kind. Not that difficult to do and it worked out just fine.
drilling is the best option but not your only one. on many bikes you can install the front (long stud) brake on the back with the concave washers and nut from your old brakes. then mount the rear brake on the front using the recessed nut placed inside the fork crown/steerer or use a long recessed nut made for a carbon fork in the traditional manner.

i have done all three of the above options with great success.


due to the tight area behind the rear triangle, this is what i would do:
use the front brake on the back with the concave washers and a nut

drill the back of the fork out for a recessed nut and mount the rear brake on the fork with a long recessed nut. you may have to cut the nut to the "perfect" length.
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Old 01-23-11, 01:46 AM   #12
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Would it look silly if i put new breaks on an old frame?
Depends on the breaks

Last edited by Kol.klink; 01-23-11 at 01:50 AM.
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Old 01-23-11, 02:11 AM   #13
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Would it look silly if i put new breaks on an old frame?
Unless it's a prized frame... such as a PX10, paramount or etc... and you have to do some "chopping" to get some stuff to be compatible..
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Old 01-23-11, 02:45 AM   #14
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or stick the brakes you bought on fleabay and try get something for them and buy appropriate brakes for your frame
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