UCI expected to approve Road Disc Brakes for 2016
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby robbo mcs » Tue Nov 21, 2017 4:14 pm
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby RobertL » Tue Nov 21, 2017 4:27 pm
Was that they case where she couldn't apply sufficient force because her hands were too small for the brake lever reach? And didn't that lead to some sort of action against the bike shop that sold her the bike for not setting it up for her correctly?I also recall a deadly crash where a female cyclist couldn't brake properly with rim brakes. In that case, hydraulic disc brakes would have saved her life.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby biker jk » Tue Nov 21, 2017 5:05 pm
Yes, that's the one.RobertL wrote:Was that they case where she couldn't apply sufficient force because her hands were too small for the brake lever reach? And didn't that lead to some sort of action against the bike shop that sold her the bike for not setting it up for her correctly?I also recall a deadly crash where a female cyclist couldn't brake properly with rim brakes. In that case, hydraulic disc brakes would have saved her life.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby kb » Tue Nov 21, 2017 5:23 pm
That happened to my wife several years ago when she borrowed my bike. Childhood habits had her backpedalling. Whoops!warthog1 wrote:She screamed "my brakes have gone" before hitting the dry stone wall.
Using my razor sharp detective skills. I'm tipping there may have been a problem with her brakes.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby Alex Simmons/RST » Fri Feb 09, 2018 7:15 am
https://www.facebook.com/matteo.rausse/ ... 922399837/
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby MichaelB » Fri Feb 09, 2018 8:47 am
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby Newcastle Dave » Fri Feb 09, 2018 9:18 am
Say What !!Alex Simmons/RST wrote:Meanwhile, in Dubai, Elia Viviani's wheel change:
https://www.facebook.com/matteo.rausse/ ... 922399837/
Must have been a mechanical issue - I can change a wheel on my disc brake cross bike a lot quicker than that (I could almost change a wheel on my car faster than that), and I am an absolute mechanical klutz
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby Jmuzz » Fri Feb 09, 2018 1:12 pm
They are really a bit oversized and agricultural at the moment, still decades behind race motorcycles.
Everything done to motorcycle sportsbikes brakes carries over to bicycles, there is better performance in smaller weight easily available.
Once that's settled the real fun of "Di2 ABS" argument will start, all a repeat of motorcycle history.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby biker jk » Fri Feb 09, 2018 3:27 pm
Never happened with a rim brake wheel...Alex Simmons/RST wrote:Meanwhile, in Dubai, Elia Viviani's wheel change:
https://www.facebook.com/matteo.rausse/ ... 922399837/
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby AUbicycles » Fri Feb 09, 2018 7:52 pm
The mechanic was just not very swift - had trouble releasing the through-axle, seating the new wheel in the dropouts and then getting the through axle back to tension. It was the same speed as I would do a wheel-change.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby Alex Simmons/RST » Fri Feb 09, 2018 8:40 pm
Incompatibility is a problem now facing bikes racers.AUbicycles wrote:I saw the Dubai wheel change and initially wondered if it was neutral service and an incompatibility.
The mechanic was just not very swift - had trouble releasing the through-axle, seating the new wheel in the dropouts and then getting the through axle back to tension. It was the same speed as I would do a wheel-change.
In the recent Herald Sun Tour the Aqua Blue team were riding 1x set ups, which meant the gearing on all the neutral service wheels was pretty useless for them and they would be forced to wait for a team car. A A majority of races only permit one team car in the convoy, and you can't instantly cover riders you might have in the break and the peloton.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby AUbicycles » Fri Feb 09, 2018 10:13 pm
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby Alex Simmons/RST » Sat Feb 10, 2018 6:39 am
Not much to it.AUbicycles wrote:I need to start a new thread on 1x - look out for this Alex and I am interested in your views.
Pretty much same top and bottom gears as a 2x but with much greater gaps between gear choices. The latter would do my head in.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby WyvernRH » Sat Feb 10, 2018 8:58 am
Still not sold on the need for through axles with disk brakes, especially on road bikes. Even if it is a real problem a better solution would be to reverse the position of the caliper mount rather than introduce a completely new, incompatible wheel mounting system.AUbicycles wrote: The mechanic was just not very swift - had trouble releasing the through-axle
Helps sales tho I suppose.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby LG » Sun Feb 11, 2018 9:05 am
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby Jmuzz » Sun Feb 11, 2018 3:37 pm
If injury is a concern then cover them, weighs little and improves performance.
https://www.facebook.com/MotoGP/videos/ ... 797050769/
Done right it will improve aero, cooling, contamination, maintenance, durability, safety and fixes the current cosmetic problem of how to neatly route the line.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby singlespeedscott » Sun Feb 11, 2018 5:08 pm
Ow. Strange how its gashed in two spots thoughLG wrote:Quite a nasty looking injury here http://www.cyclingnews.com/news/compton ... -in-lille/
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby MichaelB » Mon Feb 12, 2018 8:48 am
Don't CX have the discs with the rounded edges as well, or is that only mandated for road cycling races ?singlespeedscott wrote:Ow. Strange how its gashed in two spots thoughLG wrote:Quite a nasty looking injury here http://www.cyclingnews.com/news/compton ... -in-lille/
Lack of real evidence of the actual details, but none the less, nasty injury !!
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby trailgumby » Mon Feb 12, 2018 9:21 am
I suffered a similar gash to my shin once. Quite deep like that. Needed multiple stitches. What did I hit? Not the disc. I hit a very blunt log. - very hard - and split my shin open smacking it between blunt object and the bone.singlespeedscott wrote:Ow. Strange how its gashed in two spots thoughLG wrote:Quite a nasty looking injury here http://www.cyclingnews.com/news/compton ... -in-lille/
Exactly the same mechanism involved as when that rider went down on the cobblestones shortly after or in the same race as the Ventoso incident and ended up with a gash over his patela identical to this woman's photo. It was blamed on a disc rotor. Video footage shows he went nowhere near a disc rotor and simply split open his skin on impact with the cobblestone. I'm sure everyone's heard the expression "split his head open" - same mechanism.
Where it skin over bone like this I expect a similar mechanism caused the "cut" - rather than a cut, it was a split. It doesn't rule out the disc entirely, but makes it much less probable.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby andrewjcw » Mon Feb 12, 2018 10:08 am
Either way it's unfortunate and looks impressive, but is in context a pretty freak mild accident. Worse accidents like fractured clavicle/wrist are many times more common, and serious accidents like spinal/pelvic fracture are probably more common and many times more severe.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby LG » Mon Feb 12, 2018 11:27 am
What I struggle to understand is the immediate argument that a wound like this couldn't be caused by a disc rotor, it must have been something else unless all other theories are disproved. Have disc rotors not caused injuries in the past? I don't know, I wasn't there for this incident, but Katie rides a disc braked bike and is not advocating against the use of discs, the only mention is tangling with 2 other riders. Maybe it was on a hard surface or the edge of a barrier, I don't know, but cyclocross tracks often aren't the most solid surfaces. I'm not advocating for or against discs, as mentioned in numerous previous posts they are just one of innumerable possible way to be injured during a bike race.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby andrewjcw » Mon Feb 12, 2018 12:25 pm
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby Comedian » Mon Feb 12, 2018 2:24 pm
What gets me about this thread and others.. is how the pro disc-ers will argue that adding discs to a road biking peloton does not create additional risk. I get that they might argue the quantum of that risk - but that it doesn't add some additional risk is beyond me. Typically they argue that because of the existing risks that the addition of however many riders x 2 disc rotors adds no risk whatsoever.LG wrote: What I struggle to understand is the immediate argument that a wound like this couldn't be caused by a disc rotor, it must have been something else unless all other theories are disproved. Have disc rotors not caused injuries in the past? I don't know, I wasn't there for this incident, but Katie rides a disc braked bike and is not advocating against the use of discs, the only mention is tangling with 2 other riders. Maybe it was on a hard surface or the edge of a barrier, I don't know, but cyclocross tracks often aren't the most solid surfaces. I'm not advocating for or against discs, as mentioned in numerous previous posts they are just one of innumerable possible way to be injured during a bike race.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby Alex Simmons/RST » Mon Feb 12, 2018 5:07 pm
It's really only answerable with sufficient race accident data, which we will never see.Comedian wrote:What gets me about this thread and others.. is how the pro disc-ers will argue that adding discs to a road biking peloton does not create additional risk. I get that they might argue the quantum of that risk - but that it doesn't add some additional risk is beyond me. Typically they argue that because of the existing risks that the addition of however many riders x 2 disc rotors adds no risk whatsoever.LG wrote: What I struggle to understand is the immediate argument that a wound like this couldn't be caused by a disc rotor, it must have been something else unless all other theories are disproved. Have disc rotors not caused injuries in the past? I don't know, I wasn't there for this incident, but Katie rides a disc braked bike and is not advocating against the use of discs, the only mention is tangling with 2 other riders. Maybe it was on a hard surface or the edge of a barrier, I don't know, but cyclocross tracks often aren't the most solid surfaces. I'm not advocating for or against discs, as mentioned in numerous previous posts they are just one of innumerable possible way to be injured during a bike race.
The use of disk brakes in road races can both add and reduce injury risk because there are various risk factors, some of which may be positively influenced by use of disk brakes, some negatively, others neutrally and a few factors will depend on the race scenario. What the overall difference is we'll likely never know due to the lack of data.
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Re: UCI expected to approve Road Disc Brakes for 2016
Postby Jmuzz » Mon Feb 12, 2018 5:29 pm
All things considered it is not an answer anyone can give, not going to be much in it.
If there is any proof of slice injury then simply require covers and they will be adapted quickly.
The ban was a mistake which only prevented cover support from being developed. If the option was there then this generation of calipers would be designed to support a cover screwed onto their mounts and the option would be there whether to keep it or remove it, rather than just a ban and back to where it started again.
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