Was fettling with my bike earlier today (make sure I can have it ready for the BB200 ). I can't make my front brake 100% rub free on spinning, I thought I might have bent the disc or coz of the formula design of the 160 to 180 post adaptor.

So I have a brane new disc and a brand new post mount adaptor made by hope. Fitted them and still have the very slight rubbing, althought admittedly I can adjust the caliper to sit centerally better.
Anyway, on even closer inspection, I think I might have twisted my fork lowers (2010 Fox 32s), and therefore can't make the caliper sit parallel to the disc :? I think (might be imagining it) that the wheel doesn't sit centrally...and the caliper wants to be a bit twisted to sit nicely with the disc - I know older rock shox sids suffer badly from twisting under brake forces.

Anyway - does anyone have experience of this? Anyone untwisted there forks? And any other advice?
Cheers.

That's at least more inventive than "the dog ate my homework".

flatfishy wrote:That's at least more inventive than "the dog ate my homework".

It's gonna take more than a set of twisted forks to stop me arriving at the start line!

So after a few hours this morning of trying a rather large combination of:

- wheels
- discs
- forks
- calipers
- brake pads
- caliper adaptors (160-180 Post mount)

and a partial rebuild and bleeding of my the brakes.

I have come to the conclusion (which was my original suspicion to begin with ) that essentially formula discs are poor show and buckled enough to annoy me.

I have purchased some shimano XT discs which I hope to be flat, and this should fix my problem 8-)

We'll see.... :?

After more fettling today I have solved the problem.

Fitted new front disc (impressed with these shimano rotors actually). Still very slight problem with rubbing, so then removed the front formula R1 brake and swapped it with the XT from my bouncy bike.

Did you know that at rest the distance between the pads on the XT caliperss are about 3mm and about 2mm on the R1s. The tolerances on the r1 are so fricking ridiculous that unless everything is absolutely spot on, you'll get a bit of rubbing. All my shimano brakes (run them on my commuter and my bouncy bike) I have no trouble setting up with zero rub.

Not entirely sure what I'm gonna do for the BB200, probs run mis matching brakes (R1 for the rear is all ok, but everything is a lot stiffer back there and it's a 160 disc).

/ End Boring update post, but having spent more time than I care to admit on this, I thought I could at least share it

This evening I plan to do a short test run with a fill BB200 setup.

So are the brake woes all sorted now?

How was the test run?

FLV wrote:So are the brake woes all sorted now?

How was the test run?

Er, sorted enough for the BB200. After that I'm selling the R1s, they're super brakes, just I've had enough of the fiddle-ness.

Didn't get round to a test run as my 2nd home made usb cable for powering the gps off the maxx-d has failed, so I'm gonna build another one this week, and I may end up using my backup plan...we'll see. Confident it all works though, but will double check on thurs 8-)