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PostPosted: Wed May 15, 2019 3:11 pm 
Retro Guru
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Joined: Thu Jul 02, 2015 2:09 pm
Posts: 385
Hi All

I've got some Xt M737 brakes for use on some grey X517 rims.

Firstly, are the rims Ceramic coated if they're grey, or is there another way to tell.

The rims are NOS, what brake pads should i use?

Thanks
T


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PostPosted: Thu May 16, 2019 7:04 am 
Gold Trader / PoTM Winner
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Some grey rims were painted or anodized. The way to tell is by the label in the rim (if its there) or by the rim itself... ceramic is a flat/matt speckled finish


Pads...? Anything specific to a ceramic rim... otherwise they'll last 5minutes

G


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PostPosted: Thu May 16, 2019 12:09 pm 
Old School Grand Master
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Location: Lost in Translation
"Grey" MAVIC rims could be either ceramic or CD ("couche dure" - hard layer). CD rims have a uniform smooth shiny grey colour over the entire surface of the rim. Ceramic rims have a rough, dark grey coating on the brake surfaces only, and usually have a "CERAMIC" sticker. The other surfaces of a ceramic rim can be silver, black, or CD.

Ceramic rims need specific brake pads. I use Shimano's. CD rims use normal pads, but don't brake as well as plain rims until the CD layer has worn away.


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PostPosted: Thu May 16, 2019 12:38 pm 
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one-eyed_jim wrote:
"Grey" MAVIC rims could be either ceramic or CD ("couche dure" - hard layer). CD rims have a uniform smooth shiny grey colour over the entire surface of the rim. Ceramic rims have a rough, dark grey coating on the brake surfaces only, and usually have a "CERAMIC" sticker. The other surfaces of a ceramic rim can be silver, black, or CD.

Ceramic rims need specific brake pads. I use Shimano's. CD rims use normal pads, but don't brake as well as plain rims until the CD layer has worn away.



brilliant thanks, thats good info to have. These are CD SUP rims, so that answers that question.

Thanks again.
T


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