Disk brakes in the pro peloton.
01-01-15, 09:53 PM
#76
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For a non-pro rider like myself hydraulic discs are superior in all aspects, I have never felt more confident in a downhill, cornering at fast speed or in the wet, disc brakes make me faster. I am 100% sold on disc brakes and will never go back to the old technology. This is not marketing, hydraulic discs are truly superior brakes and I dont give a damn about what the UCI thinks or does.
01-01-15, 09:53 PM
#77
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Wrong. The braking track on clincher rims has only one path for heat dissipation. Tubulars have 2. Look at a cross section.
At least you recognise that tubulars are far safer when it comes to heat buildup. With tubulars, the inner tube is insulated from rim heating. With clinchers, it just heats up until it blows.
At least you recognise that tubulars are far safer when it comes to heat buildup. With tubulars, the inner tube is insulated from rim heating. With clinchers, it just heats up until it blows.
clincher blows the innertube, and tubulars roll off the rim. Either way you are screwed and it's easier to roll a tubular, without any predictive certainty.
discs take this entirely out of the equation.
01-01-15, 11:13 PM
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01-02-15, 12:12 AM
#81
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And when you do have a flat on tubulars it is possible to ride on it for extended distances. As opposed to struggling with imminent death on clinchers.
So to summarize, the best reason to have discs is to overcome deficiencies with clinchers. But since clinchers so profoundly suck, and the pros don't ride them, the arguments in favor of discs go away.
01-02-15, 11:43 AM
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01-02-15, 11:41 PM
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Opinions will largely stay mixed on discs because, while they're superior in some situations, they're not in others. It's not going to be a "clear cut" situation, such as the shift from aluminum frames to carbon, or for pros the switch from alloy wheels to carbon wheels.
But just as the vast majority of recreational riders didn't adapt carbon wheels, there's nothing that says the majority of recreational riders are going to do with disc brakes. Many who are like me and are on their original set of brake pads despite riding 1,200 miles or more a year since the bike was acquired in 2011 just don't see the need.
But just as the vast majority of recreational riders didn't adapt carbon wheels, there's nothing that says the majority of recreational riders are going to do with disc brakes. Many who are like me and are on their original set of brake pads despite riding 1,200 miles or more a year since the bike was acquired in 2011 just don't see the need.
01-02-15, 11:43 PM
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Well, from the article one of the big cons to disk brakes is the safety issue related to having a hot, spinning knife-like rotor. The proximity of the riders to each other and how crashes happen in road racing (pile up crashes that seem to always happen at the beginning of the TdF, for instance) makes it a much different situation than mountain or cross races.
I'm kinda surprised at how many riders don't want them in the peloton. I figured they would be all about them.
I'm kinda surprised at how many riders don't want them in the peloton. I figured they would be all about them.
01-03-15, 12:04 AM
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Apparently you really need discs if you're descending water slides backwards with your back wheel in the air.
https://youtu.be/xhI3CUDEWfU?t=5m29s
https://youtu.be/xhI3CUDEWfU?t=5m29s
01-03-15, 12:06 AM
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You all sound like a bunch of old dudes who discovered rock music in the 50s and think it satan
most concerns are BEYOND ridiculous. Squeak? Leak? Are u peeps for real?
you ever heard of motogp and f1? Me neither...bet they use wooden brakes, cause discs leak and squeak.
you realize the massive time advantage ud get braking wwwwaaaayy later? Trumps aero anywhere but on a long TT.
come on fellas, discs are where its going
most concerns are BEYOND ridiculous. Squeak? Leak? Are u peeps for real?
you ever heard of motogp and f1? Me neither...bet they use wooden brakes, cause discs leak and squeak.
you realize the massive time advantage ud get braking wwwwaaaayy later? Trumps aero anywhere but on a long TT.
come on fellas, discs are where its going
01-03-15, 12:07 AM
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they can boil the fluid and catastrophically fail
they can squeak really loud
they make wheel changes take longer
they can rub the pads
they can get bent rotors
they can break a line and be rendered useless
they can get air bubbles in line and be squishy
they are heavier
they need re-enforced, heavier forks
they tend to glaze the pads
they get contaminated easier
they require a wider wheel hub, frame spacing
they are less aero
you could die
they can squeak really loud
they make wheel changes take longer
they can rub the pads
they can get bent rotors
they can break a line and be rendered useless
they can get air bubbles in line and be squishy
they are heavier
they need re-enforced, heavier forks
they tend to glaze the pads
they get contaminated easier
they require a wider wheel hub, frame spacing
they are less aero
you could die
engineers have gotten around almost all those points a couple of decades ago.
the rest they will fix, and end up improving the rest of the bike componentry as well
01-03-15, 12:23 AM
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01-03-15, 12:44 AM
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*I wear black shoes. Cycling shoes and rugby boots should always be black.
01-03-15, 01:28 AM
#95
Fresh Garbage
01-03-15, 01:57 AM
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I am pretty sure this is only a debate that happens online. Sean Kelly never used clipless pedals; nobody said he wasn't going to win again, because it was clear that wasn't going to happen. There has been huge advances in automotive transmissions, yet we still have the manual transmission with a manual clutch. Many autocross drivers prefer that setup to paddle shifters; they feel like the have more control of the car. F-1 cars all have electronic clutches. Shifting is much more consistent, especially towards the end of a race when drivers are tired. Everybody has different needs. Not all applications work for everyone.
01-03-15, 09:24 AM
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EVERYTHING but road bikes predominantly use discs, and not just bicycles. Why do cars, motorcycles, etc use disc brakes if there's a better option?
The ONLY points you could go in favor of rim brakes are aero and slight weight. Hydraulic discs may be more complicated than rim brakes but if you're comparing mechanical discs to mechanical rim brakes, it's the same level of adjustment.
I've never thought "I wish my dura ace brakes did _______ differently", but discs would only improve on them.
The ONLY points you could go in favor of rim brakes are aero and slight weight. Hydraulic discs may be more complicated than rim brakes but if you're comparing mechanical discs to mechanical rim brakes, it's the same level of adjustment.
I've never thought "I wish my dura ace brakes did _______ differently", but discs would only improve on them.
01-03-15, 11:21 AM
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This is not a "black and white" argument. When discussing new technologies and/or adoption of things from one area to another that's previously not utilized it, the litmus test should essentially be is the gain worth the pain in terms of complexity, weight, benefit, etc. And for the vast majority, there's no clear benefit because most people don't ride in mud/muck on a road bike, most aren't having issues stopping/slowing with current, technology, etc. And for all these "non issues," they pick up a system that requires more maintenance, adds weight and requires them to switch from what they have now.
This is quite simply not analogous to the switch from standard disc brakes on cars to ABS-equipped disc brakes or something similar. Sure, some will make it out to be that way, in large part because we're a consumer-oriented economy and are relatively easily persuaded by marketing and news articles with headlines containing phrases like "Game changer," etc. But the specs just don't add up for most and the advantages are hard to quantify using a metric. Most people don't really understand the metrics behind stiffness or similar things either, but if a magazine tells them it's good, then that's all they need.
This is quite simply not analogous to the switch from standard disc brakes on cars to ABS-equipped disc brakes or something similar. Sure, some will make it out to be that way, in large part because we're a consumer-oriented economy and are relatively easily persuaded by marketing and news articles with headlines containing phrases like "Game changer," etc. But the specs just don't add up for most and the advantages are hard to quantify using a metric. Most people don't really understand the metrics behind stiffness or similar things either, but if a magazine tells them it's good, then that's all they need.
01-03-15, 11:26 AM
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Look, nobody's saying that people won't adopt discs because we're a country easily persuaded by marketing and believing that a "want" is a "need." But to compare the brake needs of vehicles weighing anywhere from 2,000 to 5,000 pounds (cars) or the sudden braking needs of a motorcycle is just nuts. No other systems would work for those kinds of vehicles.
01-03-15, 11:36 AM
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And those are apples to oranges comparisons. Next..
Look, nobody's saying that people won't adopt discs because we're a country easily persuaded by marketing and believing that a "want" is a "need." But to compare the brake needs of vehicles weighing anywhere from 2,000 to 5,000 pounds (cars) or the sudden braking needs of a motorcycle is just nuts. No other systems would work for those kinds of vehicles.
Look, nobody's saying that people won't adopt discs because we're a country easily persuaded by marketing and believing that a "want" is a "need." But to compare the brake needs of vehicles weighing anywhere from 2,000 to 5,000 pounds (cars) or the sudden braking needs of a motorcycle is just nuts. No other systems would work for those kinds of vehicles.
"Everything but road bikes predominantly use discs, and not just bicycles" means that within bicycles, road bikes are the only type not predominantly using discs. Ignore what I said about cars and motorcycles if it helps you.
I've never complained about the performance of rim brakes, but besides a couple of rides I've always been on really high end rim brakes. Even crappy discs work well if they're adjusted right.