Join Date: May 2002
Location: Nova Scotia Canada
Bikes: 2010 Cervelo RS. Marinoni touring bike. Kona Tanuki MTB. Specialized Hardrock (commuter). Raleigh (early 80s) Super Gran Prix.
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New MTB, never used disc brakes, need your help
I have been a roadie for 15 years now, before that I had a mountain bike, back in the time of cantilever brakes and front suspension was only for the rich and professional.
Well, just yesterday I purchased a 2005 Specialized Hardbody with disc brakes, rode the thing for the first time today and wow those disc brakes sure do stop the thing fast and I love front suspension.
I do most of my maintenance myself but I do not know anything about disc brakes. The bike has Shimano Acera mechanical discs. For example, is there a way to centre the pads so they will not rub the rotor? I have been looking for some sort of centring screw, like on my road bike dual pivots, but I don't see anything. Whenever I take the wheel off and reinstall, the brakes will rub the rotor. CAN one centre the pads?
There are 2 barrel adjusting knobs for taking up cable slack or for adjusting as pads wear - one by the brake unit itself and one up by the lever. Do I adjust one over the other or both?
I have look on Sheldon Browns website for info on disc brakes but he doesn't have anything there. The Park Tool website has something on Avid mechanical disc brakes but that's not the same I don't believe.
I'm heading on down now to pick away at them and see if I can learn anything, without breaking something (no pun intended).
Any help or websites for info would be great!