View Single Post
  #303  
Old November 4th 17, 04:51 PM posted to rec.bicycles.tech
JBeattie
external usenet poster
 
Posts: 5,870
Default Why do some forks and frames have brake rotor size limits?

On Saturday, November 4, 2017 at 8:00:38 AM UTC-7, Joerg wrote:
On 2017-11-03 17:47, John B. wrote:
On Fri, 03 Nov 2017 07:53:04 -0700, Joerg
wrote:

On 2017-11-01 19:23, John B. wrote:
On Wed, 01 Nov 2017 13:56:24 -0700, Joerg
wrote:

On 2017-11-01 13:39, wrote:
On Wednesday, November 1, 2017 at 12:35:34 PM UTC-7, Joerg wrote:

A lever is never supposed to bottom out before the brake force on
respective wheel is maxed. If it did then he'd have faulty brakes
and I am sure he'd not have posted this. The guys look like serious
cyclists who know this.

How old are you again Joerg? With even the old Campy brakes it was
possible to bottom out the levers often without locking the wheels.


I clearly consider that a faulty brake system. In Germany they would
instantly disqualify a motor vehicle with such a flaw and not even let
you ride it off the TUEV test site.

But Jeorg, you aren't in Germany.


So that makes it ok to tool around in traffic with faulty equipment?


Goodness! You mean that if it isn't acceptable in Germany it is
automatically faulty and absolutely cannot be used in the rest of the
world?


A vehicle where the brake force is not at absolute max with full
actuation is faulty. Always.


Somehow, I don't think that you are correct.


So you honestly think that a bike where the levers bottom out while the
wheels are still not locked up is "safe to go"?

If that's true I am glad you are no longer maintaining aircraft. I have
a very different philosophy about safety.


Aside from ABS, I agree -- and as a matter of fact, getting my new and awesome Trek up and running, the rear caliper brake (direct mount) bottomed out at the lever without locking up the wheel. WTF? That's no good. It's a complex brake, but the problem was simple -- the last run of the cable housing was about a half-inch too short. I dropped in a new section, did some minor adjustment and voila -- I'm skidding down the road, which actually isn't too difficult because the pavement is wet.

It's odd being on rim brakes after being on discs exclusively for the last four months, since my SuperSix bit the dust. I haven't ridden the bike much because its been raining, and I just got it, but I do worry about braking a spoke with the pads running so close to the rim. Cables are simple, though. I don't look forward to bleeding the hydraulics -- something I haven't done yet.

-- Jay Beattie
Ads
 

Home - Home - Home - Home - Home