??? yes my jump bike has disc brakes? or are you talking about a road bikedstfort said:i was wondering do any of you guys use disk brakes on your bikes?
ok thx alothd reynolds said:If by road bikes you mean the ones with skinny 700c tires... no because the frames on these will not accomodate discs... 1) there's no disc brake caliper mounting on the frames and fork and 2) disc specific hubs won't fit at the back.
You can get a LeMond POPRAD (cyclocross) bike (amongst others) if you want to run disc brakes with 700c wheels.dstfort said:i was wondering do any of you guys use disk brakes on your bikes?
Are they really necessary? I do not see the point, I get plenty of stopping power from my good 'ole Campagnolos.Rich8P said:I'd love discs on my roadie and you can retro-mount disks using special mounting straps. The problem is that the fork bends too much on one side.
Take a look at Canyon on the internet. Do a search for project 6.8. They are experimenting with twin disks.
Assuming that you are talking about hydraulic disks, these are applicable to both road and MTB in my opinion. I've tried to list in order of importance.dstfort said:i was wondering do any of you guys use disk brakes on your bikes?
Hydraulic or mechanical disc are both not applicable for road bike use. See earlier post.Rich8P said:Assuming that you are talking about hydraulic disks, these are applicable to both road and MTB in my opinion. I've tried to list in order of importance.
1. If you wheel becomes "not round" during the ride then the chances are that you can get back. This can happen on the road if you hit a bump etc.
2. If it rains or gets dirty you can still stop without using a whole brake pad
3. When you brake at high speed, the disc is perfectly true so you don't get judder
4. Hydraulics are easier to 'dose' than cables but this is not limited to disks
5. You can take the wheel in and out without having to open the caliper so you can change it easier and faster
6. Disk brakes are self-adjusting so they always feel the same and you never need to tighten the cable
Juicy carbons are a luxury. Even Deore now comes with hydraulics.. they're also cheaper. Tektro Gemini hydraulics are a lot cheaper.Strumpetto said:The XC hardtail I'm getting comes with juicy carbons. However, discs seem to be more of a luxury than a necessity.
hd reynolds said:Hydraulic or mechanical disc are both not applicable for road bike use. See earlier post.
Am not talking of what is possible tomorrow. Right now they are not applicable unless you custom build your frame and fork.sideshow_bob said:They are only not applicable in as much as manufacturers today aren't producing components that support installation. Tomorrow that might be different. Some Cyclocross frames/forks are already supporting them, and rightly so as they are far superior off road to rim brakes.
--brett
hd reynolds said:Am not talking of what is possible tomorrow. Right now they are not applicable unless you custom build your frame and fork.
You get some of that back in a disc specific rim which can be lighter. We already have bikes that are struggling to meet the UCI 6.8kg limit and that are being artificially weighted (a powertap or srm as an example). As materials evolve (and assuming the 6.8kg limit remains in place) there is every possibility that disc equipped bikes could be at or around that limit.Insaneclimber said:DISC BRAKES ARE HEAVY
No disc brakes do not give better stopping power, think about it a rim brake has the ability to lockup and skid the wheel, so how then do disc brakes improve tyre traction, they dont do they, disc brakes are more powerful but the governing factor here is tyre traction. and last time i tried my "you beauty" v brakes in wet muddy conditions they locked the wheel too? Disc brakes give better modulation ( for dummies that means better feel)sideshow_bob said:You get some of that back in a disc specific rim which can be lighter. We already have bikes that are struggling to meet the UCI 6.8kg limit and that are being artificially weighted (a powertap or srm as an example). As materials evolve (and assuming the 6.8kg limit remains in place) there is every possibility that disc equipped bikes could be at or around that limit.
Disc brakes absolutely give better stopping power in certain situations. Wet / muddy etc etc.
--brett
Insaneclimber said:DISC BRAKES ARE HEAVYAre you sure?
I've MTB Magura disks according to internet: weight 747g per pair including levers and cables...
...and a pair of Ultegra at 335g for the brakes and 490g for the levers (couldn't find the weight of the cable). Perhaps the comparison isn't fair because the Ultregra include a gear control.
I just looked this up on the internet so perhaps the numbers need checking.
Canyon have a prototype 6.8kg bike with twin front disks.
I'd have thought that disks are heavier, hence all the MTB racers have V-brakes in the dry but would be interested in the evidence.
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