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Just from curiosity (brake-related question)(3 posts)

Just from curiosity (brake-related question)al0
Oct 21, 2003 12:35 PM
Can somebody explain why on roadbikes (almost) only caliper brakes are used?
re: Just from curiosity (brake-related question)russw19
Oct 16, 2003 8:59 AM
The simple answer is just "because that's what they use" but the more complex answer is that the total system is lighter than cantilever or v brakes when you factor everything in. Canti or V brakes are a heavier total system when you add the extra weight of the brake bosses that have to be welded to the frame and fork, as well as the extra bolts for the mounting hardware. Many road bike frames would not have strong enough seat stays to support the extra braking force of cantilever brakes. On top of that, the extra braking power and mud clearance are not needed in most road races. The exception would be a few Spring Classics like Paris-Roubaix, but often riders race cross bikes there so they can use cantilever brakes.

Discs aren't quite light enough yet and the UCI will block their use anyways. There is an article that went up on the Velonews website yesterday about the UCI banning disc brakes from International Cyclocross Races this year, effective Nov. 1st. A lot of American bike companies feel it is because disc brakes on cross bikes are almost exclusively used on American built bikes and the UCI is caving in to pressure from Euro bike manufacturers who are at least 5 years behind the American companies technology due to the boom in downhill bikes and disc brake technology here in the states.

That answer your question?

Russ
re: Just from curiosity (brake-related question)al0
Oct 22, 2003 2:41 PM
Thank you quite comprehensive answer. I'm not completely agreed with "extra braking power are not needed", but anyway point is clear.