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Framebuilders Thinking about a custom frame? Lugged vs Fillet Brazed. Different Frame materials? Newvex or Pacenti Lugs? why get a custom Road, Mountain, or Track Frame? Got a question about framebuilding? Lets discuss framebuilding at it's finest.

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Old 06-21-08, 12:15 PM   #1
matt@truebluest
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disc brake mount geometry

I am seeking info on where to place mounting bosses for front and rear disc brakes. Thanks for any help!
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Old 06-21-08, 12:51 PM   #2
NoReg
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There was a recent thread on this on the frameforum. A simple way to go is to get a wheel, mount the caliper on your bracket, and clamp the caliper to the disc (try to do this so it is in mid adjustment), then mark fit and weld that place. There are standards, however, and I think those were discused in the other thread.
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Old 06-21-08, 06:08 PM   #3
matt@truebluest
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thanks!

I found the previous thread. Since I'm building a new bike from scratch, I will have to get my caliper and measure a bike at the local shop. A search for info on the ISM (International Standard Mount) got me a lot of info on calipers, but not much on the mounts, other than that they are 51mm apart.
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Old 06-22-08, 10:07 PM   #4
ultraman6970
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Probably u might go this way better...

http://www.novacycles.com/catalog/pr...oducts_id=1341

I have a scott sub 20 and the darn caliper holes are at the inside instead of outside of the frame, adjust the calipers was a PITA, well not that hard but it was tight.

Good luck
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Old 07-04-08, 05:47 PM   #5
Torque1st
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Try:
http://www.magura.com/

They have a pdf file on the site that gives more dimensions. I downloaded it once but I can't find it at the moment.

Found it at the bottom of this page:
http://www.magura.com/english/frameset/frameset.htm

Hmmm, that link gets redirected back to their homepage. You will have to go to the download section and their installation manuals, then try to find the info.

Last edited by Torque1st; 07-04-08 at 06:08 PM.
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Old 07-05-08, 10:12 AM   #6
sstorkel
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Select "Downloads" from the "Service" manual that appears at the top of the Magura page. Select "2007", then "Disc Brakes", then "Marta". The last link on the page that appears should be "Tech Sketch: The Dimensions of the International Standard". It's a PDF containing exactly the info you need. Cool find!

Hint: the drawing labeled "Rearbrake" is actually a front fork, and the drawing labeled "Frontbrake" is actually a rear drop-out.
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