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Disc Brake Conversion?

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Old 07-11-21, 06:38 AM
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ParamountScapin 
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Disc Brake Conversion?

My Scapin has the last year metal 10-spd Campy Centaur brifters. I would like to try a disc brake on the front. Getting a proper fork and wheel is not problem. However, am wondering what disc would work best with my Centaur brifter? Thanks.
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Old 07-11-21, 06:44 AM
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Your Campy brifters have "short pull" brake levers so a road mechanical disc brake would be about the only compatible type. I have TRP Spyres on one bike and they work very well. I recommend getting the new fork with a "flat mount" caliper mount and use a 160mm rotor.
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Old 07-11-21, 07:05 AM
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+1 TRP Spyres. Since you'll need a new disc wheel, I'd suggest you look for a fork with thru axle in addition to flat mounts.
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Old 07-11-21, 07:23 AM
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Thanks for the replies. I'll likely stick with either a Scirocco or Zonda front wheel.
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Old 07-11-21, 07:14 PM
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My touring bicycle came with the Spyre disk brakes. I now use the Paul Kamper's. The Paul Klamper not only works better at stopping but you can order them with Campy actuating arms instead of using a hacksaw to relocate were you pinch the cable.
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Old 07-11-21, 08:22 PM
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Juin tech brakes work real well and should be fine with the campy, they do require a shorter throw and are a cable actuated hydraulic brake.
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Old 07-11-21, 08:23 PM
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I have campy brakes on one of my bikes. I don’t think that mechanical disc are much better if at all.

Hydraulics are an improvement, but I wouldn’t go through the trouble for mechanical.

Clean the heck out of your rims and get new pads.
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Old 07-11-21, 08:53 PM
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My Scapin has the last year metal 10-spd Campy Centaur brifters. I would like to try a disc brake on the front. Getting a proper fork and wheel is not problem. However, am wondering what disc would work best with my Centaur brifter? Thanks.
I looked up the campi group. Why do you want to spend all the money to have a disk brake on the front of your bicycle.
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Old 07-11-21, 09:00 PM
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Originally Posted by Rick
......you can order them with Campy actuating arms instead of using a hacksaw to relocate were you pinch the cable.
Please explain why it's necessary to relocate the Spyre's pinch bolt when using Campy brake levers.
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Old 07-11-21, 10:31 PM
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Please explain why it's necessary to relocate the Spyre's pinch bolt when using Campy brake levers.
There are three kinds of cable pull. Long, short and Campi. I just looked it up and I was mistaken on the brake model. It was the Hy/Rd that people modified. Campi is still different enough that you will have poor braking on the Spyre.
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Old 07-12-21, 03:19 PM
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Originally Posted by Rick
There are three kinds of cable pull. Long, short and Campi. I just looked it up and I was mistaken on the brake model. It was the Hy/Rd that people modified. Campi is still different enough that you will have poor braking on the Spyre.
Make that MTB, Shimano SLR-EV, and everything else (Shimano Super SLR & SLR, Campy, SRAM, Microshift). Shimano relocated the brake lever pivot with their latest shifters (anything labeled SLR-EV) pretty much doubling the cable pull. TRP made their mechanical disc calipers to work properly with those levers, leaving everything else compromised at best. As noted, the 'fix' for TRP HY/RDs was to relocate the cable to the other side of the pinch bolt by modifying the arm or reversing the clamp (I didn't like either method and designed a whole new arm for my Campy disc bike with HY/RDs). Spyres have no good way to shorten the pull but that hasn't stopped some from trying to make them work. And you can, you just need to run the pads very close to the rotors, adjust frequently, and use handlebars that allow for max lever travel. Juin Tech work with non-SLR-EV levers but they don't self adjust and only work with 160mm rotors. I know nothing more than that about them as I've never personally used them.
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Old 07-12-21, 03:56 PM
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Originally Posted by joejack951
Spyres have no good way to shorten the pull but that hasn't stopped some from trying to make them work. And you can, you just need to run the pads very close to the rotors, adjust frequently, and use handlebars that allow for max lever travel.
I have Spyres on a new bike using Tektro's R200 "short pull" brake levers and they work very well. The lever pull is normal, the pad clearance isn't touchy and the hand effort about the same as good dp calipers with Kool Stop pads.
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Old 07-13-21, 07:34 AM
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Originally Posted by HillRider
I have Spyres on a new bike using Tektro's R200 "short pull" brake levers and they work very well. The lever pull is normal, the pad clearance isn't touchy and the hand effort about the same as good dp calipers with Kool Stop pads.
My guess is that the brake lever and handlebar combo you are using allows for more lever travel (and thus is more foregiving) than a Campy/SRAM brifter can achieve on a typical handlebar. If you poke around the internet, you’ll find plenty of complaints along the lines of what I described.

For what it’s worth, using a SLR-EV-pull caliper with a short pull brake lever will actually yield very low braking forces at the lever, up until the point you run out of lever travel.
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