Bike Forums - View Single Post - The death of rim brakes, disc brakes now unanimous in the pro peloton...

09-22-21, 02:47 AM

#74

Lazyass

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Quote:

Originally Posted by Dave Mayer

Of course the pros didn't want discs. Chris Froome is one of the few riders with enough recognition and money in the bank to be able to state the obvious.

As other posters have indicated, it is not just the insurmountable disadvantage of couple of extra pounds of ballast (at the worst place on the bike: the wheels), but it is the glacial race-ending wheel changes, and the constant rub-rub-rub and squeal. What I don't think has been mentioned is the extra bulking up of the frame and fork required by discs, leading to more weight and a less compliant, less comfortable fork. With rim brakes, much of the braking forces gets transferred through the rim into the fork crown, which is already very strong. With discs, all of the braking forces end at the hub, and then through the fork, which has to be reinforced.

"I've been using them for the last couple of months and, performance-wise, they're great. You always stop when you need to stop. In the dry, in the wet, they do the job. They do what they're meant to do.

"The downside to disc brakes: the constant rubbing, the potential for mechanicals, the overheating, the discs becoming a bit warped when on descents longer than five or 10 minutes of constant braking.

"Personally, I don't think the technology is quite where it needs to be yet for road cycling," Froome continued, before adding to his list of shortcomings.

"The distance between the disc and the rotors is still too narrow, so you're going to get that rubbing, you're going to get one piston that fires more than another, you're going to get these little issues. I don’t think the pistons quite retract the way they're meant to all the time. Quite often it’ll work on the stand and when the mechanic sorts it out, but once you get onto the road, it’s a different story."

https://www.cyclingnews.com/news/chr...n-disc-brakes/