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PostPosted: Thu Sep 06, 2012 1:17 pm 
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Formerly known as wassertreter

Joined: Tue Apr 12, 2011 8:08 am
Posts: 1977
Location: Pedal Square
Can a DA BR-7900 rear caliper be mounted on the front, or will things blow to pieces? Any problem apart from needing a different length mounting bolt? Thanks.

(Brake shoes will have to be swapped for correct direction, obviously)

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Posted: Thu Sep 06, 2012 1:17 pm 


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PostPosted: Thu Sep 06, 2012 8:08 pm 
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Joined: Mon Aug 06, 2012 12:28 pm
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It should work in theory, if you can find a longer bolt for the front fork. But make sure you can find one before taking anything to bits. I think the only thing making the front and rear caliper different is the length of the bolt. Best of luck!


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PostPosted: Fri Sep 07, 2012 4:30 am 
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On three frames I tried this and the thickness of the front of the fork crown was sufficient that there wasn't enough thread exposed behind it to screw a mounting bolt onto it. Even when I milled a nut down to the right length so it would fit snugly, it simply didn't have enough threads to hold onto. You may have different results with a different fork, but this was the same problem on one steel fork and two carbon ones.


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PostPosted: Sat Sep 08, 2012 4:53 am 
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Check the shimano tech docs, but I'm pretty sure they would be identical apart from the long bolt and associated washers. And brake pad direction, switch them around!


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