- How much disc should pad touch?
Is the position of my calipers wrong? I’ve got 3-4mm of rotor on the inside perimeter of disc that the pads don’t come into contact with and the 7-8mm strip that they do touch doesn’t seem equivalent to the pad surface area. I would have thought the more surface the pads come into contact with the better but I’ve no washers under the callipers so can’t adjust them to sit further over the disc. Is this a problem – should I file down the caliper adapters a bit, or is there something else I should do?Posted 2 months agoDM52Member
what size are the rotors and adaptors on the bike? I have been caught out before with the opposite running a 205mm disc when the adaptor was set up for a 203. Not thinking straight I used washers to fix the incompatibility until years later I spotted my mistake.
Maybe you have a 205mm adaptor setup and a 203mm rotor or something along those lines?Posted 2 months agoandreasrhoenMember
From my bike assembly history …. – was also hoping for the “perfect world”.
But yes – tolerances stack up and the caliper might not “touching” the disc in a perfect manner.
And quite strange: no issues at all with brake performance and “some mismatch”. Had max around 3 mm. Everything was fine.
If you find the “perfect adaptor”. O.k. you are lucky. Then this is fine as well.Posted 2 months ago
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