What's inside that carbon frame where you attach the (road bike) rear brake caliper?
10-29-10, 12:58 PM
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What's inside that carbon frame where you attach the (road bike) rear brake caliper?
What's inside that carbon frame where you attach the (road bike) rear brake caliper?
I've been afraid to really gorilla down on the attachment bolt/nut bacause the frame is carbon. Consequently the brake does not remain rigidly in place, but twists when I apply it. Tried a serrated washer, but that didn't help.
I'm wondering if there might not be an aluminum piece in there that the brake nut/bolt actually clamps to? People seem to gorilla down on the brake attachments to carbon forks, so the same should apply here, I would think.
How are you guys handling this?
I've been afraid to really gorilla down on the attachment bolt/nut bacause the frame is carbon. Consequently the brake does not remain rigidly in place, but twists when I apply it. Tried a serrated washer, but that didn't help.
I'm wondering if there might not be an aluminum piece in there that the brake nut/bolt actually clamps to? People seem to gorilla down on the brake attachments to carbon forks, so the same should apply here, I would think.
How are you guys handling this?
10-29-10, 01:08 PM
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I'm talking about a standard rear brake on a standard road frame. Only difference is it's made of carbon.
10-29-10, 01:23 PM
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I don't know that I would just "gorilla" it. Who makes your equipment? As I get ready to assemble my bike, SRAM recommend 8 to 10 N-m while Specialized recommends 8 N-m. I'll be torqueing to 8Nm.
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10-29-10, 02:18 PM
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What's inside that carbon frame where you attach the (road bike) rear brake caliper?
I've been afraid to really gorilla down on the attachment bolt/nut bacause the frame is carbon. Consequently the brake does not remain rigidly in place, but twists when I apply it. Tried a serrated washer, but that didn't help.
I'm wondering if there might not be an aluminum piece in there that the brake nut/bolt actually clamps to? People seem to gorilla down on the brake attachments to carbon forks, so the same should apply here, I would think.
How are you guys handling this?
I've been afraid to really gorilla down on the attachment bolt/nut bacause the frame is carbon. Consequently the brake does not remain rigidly in place, but twists when I apply it. Tried a serrated washer, but that didn't help.
I'm wondering if there might not be an aluminum piece in there that the brake nut/bolt actually clamps to? People seem to gorilla down on the brake attachments to carbon forks, so the same should apply here, I would think.
How are you guys handling this?
Failing that, I'd bet there's enough solid material there to allow you to tighten the bolt. If the caliper turns, it's not tight enough!
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10-29-10, 02:34 PM
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Could also be that you are bottoming the nut on the brake-bolt. Take the brake off and spin the nut all the way down the bolt. Measure the inside-distance between where the brake rests on the frame to underneath the lip on the nut. Is it smaller than the thickness of the seatstay bridge?
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