El Cristoff Posted December 4, 2008 Report Share Posted December 4, 2008 Hey all, i managed to get a 203mm rear BB7 for my 24uk about 2 weeks ago, i fitted it and bedded it in using the hill/ water technique, and it works amazing.However, when ever i leave my bike in the garage overnight, by the morning it has no hold, no bike and just feels horrid. I can get it working again by putting water on the disk, and riding around for a bit, but i want it to work constantly like my front BB7 does.Has anyone got any suggestions/ ideas as to what is causing this?All help appreciated,Chris x Quote Link to comment Share on other sites More sharing options...
Pashley26 Posted December 4, 2008 Report Share Posted December 4, 2008 Pads or disc are probably contaminated. Also it's very cold at the mo, so if you've got Organic pads they won't hold as well anyway in this sort of weather (Although this is VERY minimal). Quote Link to comment Share on other sites More sharing options...
psycholist Posted December 4, 2008 Report Share Posted December 4, 2008 I had a disk that behaved like that but the reason for it was that it was leaking really slowly from the pistons onto the brake pads. On a mechanical disk I'd pull the pads out, give the caliper a good clean (Make sure that the oil or grease on the caliper mechanism isn't seeping out), clean the disk with IPA (or loads of soap and water), sand the pads clean and reassemble. If it happens again have a look for fresh contamination... Does your cycle home involve oily puddles? I've seen it happen occasionally on XC bikes where forestry machinery contaminates the puddles on trails with oil, but it's a very long shot... Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted December 5, 2008 Report Share Posted December 5, 2008 Does it squeak/make strange noises? If so, it's contaminated!I put the pads and rotor in the dishwasher, then gave them another wash in warm soapy water, just to be sure, then put it all back on, and it's awesome!That's a 203mm on a mod too, bit overkill...but it's nice. Quote Link to comment Share on other sites More sharing options...
El Cristoff Posted December 5, 2008 Author Report Share Posted December 5, 2008 Does it squeak/make strange noises? If so, it's contaminated!I put the pads and rotor in the dishwasher, then gave them another wash in warm soapy water, just to be sure, then put it all back on, and it's awesome!That's a 203mm on a mod too, bit overkill...but it's nice. Yeah, it squeeks sometimes I'll try boiling it later, then sand the pads, that should work quite well Quote Link to comment Share on other sites More sharing options...
N.Wood Posted December 5, 2008 Report Share Posted December 5, 2008 I found meths works well for decontaminating pads too. Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted December 5, 2008 Report Share Posted December 5, 2008 I found meths works well for decontaminating pads too.But don't get meths confused with white spirit, like I once did! Quote Link to comment Share on other sites More sharing options...
N.Wood Posted December 5, 2008 Report Share Posted December 5, 2008 Word. Quote Link to comment Share on other sites More sharing options...
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