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Disc brakes and Giro (spoiler)
Last Post 05/14/2013 07:20 AM by entheo genic. 10 Replies.
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Ride On

Posts:452

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05/10/2013 10:08 PM
What affect would road bike disc brakes had in today's Giro stage? The way most of them went down I don't think it was a lack of braking power but of tire to road friction. I still believe road disc brakes is a solution without a problem
Keith Richards

Posts:755

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05/10/2013 10:19 PM
The limiting factor in braking at the end of the day is the tire, not the brakes themselves.

Disc brakes would have been no help today.
----- It is his word versus ours. We like our word. We like where we stand and we like our credibility."--Lance Armstrong.
Cosmic Kid

Posts:1175

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05/10/2013 10:29 PM
The only way discs would have been an advantage today would be in that instant when you start to apply your brakes in the wet and it feels like the bike almost accelerates. It can cause people to overreact and grab a handful of brake. In wet conditions, it won't take much extra pressure to get a tire to completely lose traction and allow the wheel to lock.

That said, you are dealing with professionals here, so the reality is that discs likely would have made little difference.
Just say "NO!" to WCP!!!!
Gonzo Cyclist

Posts:225

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05/10/2013 10:50 PM
maybe more modulation capabilities on most days, but they would not have helped today, those guys looked like they were riding in ice
Oldfart

Posts:490

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05/11/2013 12:46 AM
Certainly looked slick. But is it possible that some riders went into corners too fast because their brakes couldn't stop them well enough and as a result slid out? Is it possible the once the rims dried out from braking that the wheels locked causing the riders to slide out? To me those looked a bit like what used to happen off road with v brakes in particular. Those were strong but modulated badly. I wonder how an Englishman can seemingly ride so badly in rain.
wrenchie

Posts:3

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05/11/2013 10:15 AM
Most of the crashes I saw were a result of the front tire losing grip. I don't think discs would've helped much.
laurentja

Posts:122

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05/14/2013 01:18 AM
Some of the carbon rim/brake pad combo's out there might not play well together when wet. As in grabby... Might be no big deal when dry but on lightly-wet roads when you are on the edge of staying upright...

Maybe makes a case for 25mm tire width with some tread (not slicks).

BTW, what do you suppose IS the best-preforming tire on the market for these kinds of wet mountain descents?
79pmooney

Posts:1190

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05/14/2013 01:40 AM
Or, perhaps DSs should mandate aluminum rims for poorer riders on wet days with hairy descents. What a concept! (And yes, they throw a bunch of aero away, but they do get a handful of rim weight reduction in return.)

Laurentia, I'll guess the Vittoria tubbie equivalent to the Open Paves is one of the better.

Ben
laurentja

Posts:122

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05/14/2013 02:05 AM
Yes the old standard -- Corsa CX. They do have the green version of that (Pave CG) which seems to have the same tread, only beefier for the...pave. I have ridden many, many a CX down to the casing. Great tires. Still, I think there must be something with a more dialed rain tread out there these days.
Cosmic Kid

Posts:1175

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05/14/2013 06:38 AM
Posted By Ben Jeffries on 05/14/2013 01:40 AM
Or, perhaps DSs should mandate aluminum rims for poorer riders on wet days with hairy descents. What a concept! (And yes, they throw a bunch of aero away, but they do get a handful of rim weight reduction in return.)

Laurentia, I'll guess the Vittoria tubbie equivalent to the Open Paves is one of the better.

Ben


The weight loss performance does not offset the loss in performance from aerodynamics,so that particular side of the trade off isn't worth it. Braking performance of aluminum vs carbon in the wet is a different issue and one that, personally, I would take.
Just say "NO!" to WCP!!!!
Entheo

Posts:317

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05/14/2013 07:20 AM
the question that comes to my mind is that, until the peloton wholesale adopts disc brakes the riders run the risk of being caught out with a flat with the neutral service car being of no help whatsoever.
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