[WTGPhoben]

I ride a SC superlight, and I've found that when the rear suspension flexes, the flexion of the break cable housing causes the brakes to rub.

This was the solution I worked out:

The rollamajig is pretty rigid, and by cutting out the housing stop on one side, I was able to force the housing to flex perpendicular to the direction that the brakes travel. This way, there is no force in the direction of the brake travel to shift the brakes and make the pads rub.

To keep the cable from seizing I had to file out the cable hole in the rollamajig so It didn't get crimped by the housing flex. I also filed out the base of the housing stop at an angle so that the effective cable length stayed the same when the housing flexes.

seems to work well so far...

Here's a pic of the cable routing, you can see how the housing doesn't come into the rollamajig square:

Thought someone out there might find this useful...

 

[sanjuro]

what's a v-brake?

p.s. did you try running a slightly longer brake housing?

 

[WTGPhoben]

what's a v-brake?

p.s. did you try running a slightly longer brake housing?

Not sure if that was a legit question or a poke at the fact that I haven't given in to the disc demons yet. In the event that you weren't kidding: V-Brake is simply another name for linear-pull cantilever brakes.

As far as the housing, you are correct that I could have used a much longer housing, a regular V-brake noodle and a zip-tie so to hold it against the frame to achieve a similar effect, but I felt this was cleaner (and lower friction), not to mention that I like rollamajigs