Ultegra BR-6500 brakes on 1986 Nishiki Prestige-adapter needed?
03-16-18, 10:33 PM
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Ultegra BR-6500 brakes on 1986 Nishiki Prestige-adapter needed?
I just purchased a set of nice Ultegra BR-6500 dual-caliper brakes to mount on a 1986 Nishiki Prestige frameset that I'm building up. I haven't worked with road bike caliper brakes for many years. As received, the front brake bolt seems too long, since the nut 'bottoms out" before it tightens on the fork. Am I correct in assuming that I need to buy a curved half moon washer to adapt the recessed bolt brake to fit with the curvature of the fork steerer tube? The rear recessed-bolt brake seemed to mount just fine, since the brake bridge has a flattened surface.
I just want to make sure I'm doing this correctly--you want the brakes to work right.
I just want to make sure I'm doing this correctly--you want the brakes to work right.
03-16-18, 10:43 PM
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You may just need a shorter lengthed recessed bolt.
Many bike shops will trade you for the longer ones. Try your local bike shop.
Many bike shops will trade you for the longer ones. Try your local bike shop.
03-17-18, 06:06 AM
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I agree with Malcala622 I suspect the recessed bolt or nut is simply too long. Since most bikes these days have a carbon fork with a deeper crown the supplied bolt has gotten longer. Try using the rear bolt in the front for a fit test. It might engage only one or two threads but even if it doesn’t all the parts should sort of fall into place indicating a shorter bolt is needed.
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03-17-18, 06:20 AM
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If it's just a little bit short, then a washer or curved washer will fix the problem. Sometimes a washer on both sides (front and back) of the fork is needed.
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03-18-18, 10:55 AM
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get your post count up, then post pictures of the holes on the front and back of the seat stay bridge and fork crown. you probably a shaped washer for the seat of the brake caliper, but a rear one might not be needed. the brake with the longer integrated bolt goes in the front, the shorter one goes in the back. there are several different lengths of recessed brake nuts.
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