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 Post subject: carbon brake pads
PostPosted: Wed May 12, 2004 7:11 pm 
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Joined: Fri Jun 13, 2003 1:43 pm
Posts: 751
Location: Belgium
Which brake pads for carbon rims perform also good on alu rims?
Campagnolo good
Corima ?
Koolstop ?
others


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 Post subject:
PostPosted: Wed May 12, 2004 9:37 pm 
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Joined: Wed Apr 28, 2004 6:54 pm
Posts: 5
Location: Belgium
corima is verry good !!!!


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 Post subject:
PostPosted: Wed May 12, 2004 10:56 pm 
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Joined: Thu May 06, 2004 3:11 pm
Posts: 554
Location: Detroit-USA
According to the people at Reynolds the two rims have completely different needs in terms of heat dissaption, friction, etc. Any product which works "well" on both is also a compromise on both. So it depends on what your braking needs are in terms of making a product compromise.


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 Post subject:
PostPosted: Wed May 12, 2004 11:03 pm 
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Joined: Sun Oct 19, 2003 4:26 pm
Posts: 495
Location: Santa Monica, CA
Yet another reason for two bikes, keep one with carbon pads mounted and only use carbon rims in it, and have another with normal pads for Al rims. Of course you could just switch pads depending on what your going to be riding, but that's not as much fun :twisted:

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 Post subject:
PostPosted: Thu May 13, 2004 12:47 am 
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Joined: Mon May 10, 2004 4:44 pm
Posts: 148
Location: All over Texas
Not only is there a major difference between carbon and aluminum, there are significant differences between types of carbon. Graphite fibers conduct heat very well axially but because of the typically poor conductivity of the matrix (the usually polymeric "glue" that holds the fibers together), conduction trnasverse to fiber orientation is often an order of magnitude less.

Brakes convert kinetic energy into heat. The softer material always gets hotter. A brake pad designed for a carbon rim that has carbon fibers axially oriented normal to the friction surface would also work well with aluminum rims. An optimum pad for a rim with fibers axially oriented parallel to the rim normal surface would be too cold for aluminum rims.

And I didn't cover rims with special braking surfaces like SiC.

The standard caveat applies. Use what the rim manufacturer recommends. If it means swapping pads, do it. If you must, ride with a combination that eats pads, not the rims.


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 Post subject:
PostPosted: Thu May 13, 2004 3:23 pm 
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Joined: Fri Jun 13, 2003 1:43 pm
Posts: 751
Location: Belgium
Ye Olde Balde One wrote:
Yet another reason for two bikes, keep one with carbon pads mounted and only use carbon rims in it, and have another with normal pads for Al rims. Of course you could just switch pads depending on what your going to be riding, but that's not as much fun :twisted:


Just don't have the money for two bikes :cry:
I think of using a Crono rim in the front and a Corima Aero in the rear.


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 Post subject:
PostPosted: Thu May 13, 2004 3:30 pm 
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Joined: Sun Oct 19, 2003 4:26 pm
Posts: 495
Location: Santa Monica, CA
Joel wrote:
Ye Olde Balde One wrote:
Yet another reason for two bikes, keep one with carbon pads mounted and only use carbon rims in it, and have another with normal pads for Al rims. Of course you could just switch pads depending on what your going to be riding, but that's not as much fun :twisted:


Just don't have the money for two bikes :cry:
I think of using a Crono rim in the front and a Corima Aero in the rear.


I was (kind of) joking.

I would use normal black pads in the front and Corima pads in the rear.

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