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Old 05-30-08, 01:19 PM   #1
bellweatherman
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Is there a way to mount disc brakes on a old mtb frame that doesn't have disc mounts?

Is there a way to mount disc brakes on a old mtb frame that doesn't have disc mounts? I've got an old mtb that has brake mounts for v-brakes, but I want to join the disc brake revolution.
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Old 05-30-08, 02:39 PM   #2
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Yeah, Brake Therapy.
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Old 05-30-08, 09:18 PM   #3
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By "old MTB" im guessing steel, so just go to a local machine shop and get them to weld a plate with 2 holes drilled in it to the frame. Old MTB are rarely lightweight anyway and that brake therapy thing looks somewhat... ghetto.
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Old 05-30-08, 09:21 PM   #4
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they have a cleaner way to do it also,
I'm trying to find it again.
Its just a bolt on brake mount.
you can hardly tell.
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Old 05-30-08, 09:27 PM   #5
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Yea that was kinda my thought, you could definetly make something that looks alot cleaner than those brake therapies, its just another object that a stick can hold onto while ripping out spokes.
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Old 05-30-08, 10:30 PM   #6
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This needs to be made into part of the sticky. It's been asked quite a few times.
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Old 05-30-08, 11:26 PM   #7
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I'll think about it.
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Old 05-31-08, 01:07 AM   #8
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Cleanest way to do it on a steel bike is a Henry James braze-on or weld-on disc bracket. Then you need to weld or braze in a small triangulating tube between the seatstay and chainstay to reinforce the seatstay. It's very sano but you need to be able to weld or braze.
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Old 05-31-08, 07:28 AM   #9
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they have a cleaner way to do it also,
I'm trying to find it again.
Its just a bolt on brake mount.
you can hardly tell.
It's the A2Z adapter - http://www.a2zcomponents.com/OLD-web/Adapter/adap01.htm
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Old 05-31-08, 11:34 AM   #10
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^^ different from the one I saw, but basically the same concept.
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Old 06-02-08, 02:51 PM   #11
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This would be my vote too. The thing is that if you track ebay for a while you could buy a nice used steel frame and just swap the parts. Ti is different because of the $ involved.
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Old 06-02-08, 02:55 PM   #12
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rock the mullet.
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Old 06-02-08, 04:48 PM   #13
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I was quoted about $75 to have an aluminum one welded on to my old GT backwoods by a framebuilder who works with the LBS.
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Old 06-02-08, 06:57 PM   #14
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Ooooh! I was riding with a guy who snapped off his canti stud with one of those. Sheared it clean off, and almost nailed a tree. He warrantied the frame and got a brand new Marin - with disc tabs.
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Old 06-03-08, 07:16 AM   #15
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Why not just put on a disc compatible fork and stick with the old V rear? The rear brake doesn't do much anyways.

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I was quoted about $75 to have an aluminum one welded on to my old GT backwoods by a framebuilder who works with the LBS.
I don't think welding to an aluminum frame is a good idea.
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Old 06-03-08, 09:34 AM   #16
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I don't think welding to an aluminum frame is a good idea.
Since it was a framebuilder who gave him the quote I think there is less of a concern there. They tend to know what they are doing.
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