Alun Goch Posted January 30, 2006 Report Share Posted January 30, 2006 Hey evryone, me and a mate had the thought of grinding a diskbrake, but were not sure if it would work.Would the power / lock increase?Would modulation be affected?Would it even work?We thought as disk brake pads are a much harder compound to rim brakes, perhaps it wouldnt have the same effect, and as the pads are so close to the disk, maybe they would drag and catch?If anyone has tried this, or if you can see any more pros / cons, please comment.Thanks, Alun Quote Link to comment Share on other sites More sharing options...
Duck Posted January 30, 2006 Report Share Posted January 30, 2006 Please dont 1 it wouldnt work at all 2 it would make your pads crumble in seconds Quote Link to comment Share on other sites More sharing options...
munch Posted January 30, 2006 Report Share Posted January 30, 2006 i heard about doing that but im not to sure it seems a bit riskey Quote Link to comment Share on other sites More sharing options...
DeeZee Posted January 30, 2006 Report Share Posted January 30, 2006 Oh dear god, please tell me your not allowed out your house without supervision To be honest, the disc itself is far to thin to grind both sides. Plus, I've never needed any more stopping power on a correctly set up disc, i'm not sure if there is anything to gain. Oh, yer, the pads would last seconds if the disc was rough. Quote Link to comment Share on other sites More sharing options...
nmt_oli Posted January 30, 2006 Report Share Posted January 30, 2006 http://www.trials-forum.co.uk/forum/index....showtopic=69659Please don't start this one up again! Read through the topic above, it was discussed to death, and in final conclusion, it would be pointless- but if you really want to try it, be my guest, its not my brake your ruining! Quote Link to comment Share on other sites More sharing options...
zoo p Posted January 30, 2006 Report Share Posted January 30, 2006 there was a post on this not too long ago so do a search!also think about disks bedding in, when they are new the surface is slightly rough, when it beds in it gets smooth and the brake starts working better. so a grind would decrease performance and get rid of the pads in a few seconds due to the compound Quote Link to comment Share on other sites More sharing options...
Alun Goch Posted January 30, 2006 Author Report Share Posted January 30, 2006 Aha, so power of a disk brake is more dependant on contact area.I see.....-dissmisses silly thought of grinding disk-Thanks guys, super fast replies, sorry for the stupid thought, i would never had tried it though, promise!-considers a desprate attempt to get out of sticky situation by digging deeper hole asking same question with tar!!! no way...-Cheers, Alun Quote Link to comment Share on other sites More sharing options...
sembo_trials Posted January 31, 2006 Report Share Posted January 31, 2006 Hey evryone, me and a mate had the thought of grinding a diskbrake, but were not sure if it would work.Would the power / lock increase?Would modulation be affected?Would it even work?We thought as disk brake pads are a much harder compound to rim brakes, perhaps it wouldnt have the same effect, and as the pads are so close to the disk, maybe they would drag and catch?If anyone has tried this, or if you can see any more pros / cons, please comment.Thanks, Alunnah, i wouldnt bother if i was you. Quote Link to comment Share on other sites More sharing options...
mat hudson Posted January 31, 2006 Report Share Posted January 31, 2006 i'v seen it work, and it worked well. just saying.... Quote Link to comment Share on other sites More sharing options...
Matt_Tupman Posted January 31, 2006 Report Share Posted January 31, 2006 It would work if you could run a softer rubber based brake compoudIn the past i've found tar to make disc brakes less controlable and unpredictable genrally worse.Get your self a Magura Louise or Marta and try some plazmatic pads or a standered Hope trial. Quote Link to comment Share on other sites More sharing options...
chisholm Posted January 31, 2006 Report Share Posted January 31, 2006 big big no no !!!!!! to grinding diskscheerschiz Quote Link to comment Share on other sites More sharing options...
T-BAD Posted January 31, 2006 Report Share Posted January 31, 2006 thats what the holes are for.... Quote Link to comment Share on other sites More sharing options...
T_PRO Posted January 31, 2006 Report Share Posted January 31, 2006 I think it was me who started the orginal topic, and the general feeling was that it is not wise to grind disc brakes. Quote Link to comment Share on other sites More sharing options...
Clarky Posted January 31, 2006 Report Share Posted January 31, 2006 no way dont grind. Clarky Quote Link to comment Share on other sites More sharing options...
Ben Geary Posted January 31, 2006 Report Share Posted January 31, 2006 There sharp enough they won't need to be any sharper. Quote Link to comment Share on other sites More sharing options...
Shaun H Posted January 31, 2006 Report Share Posted January 31, 2006 (edited) Aha, so power of a disk brake is more dependant on contact area.The power of a disc brake is dependant on the ratio between the lever and caliper piston. The smaller the piston in the lever or larger the piston in the caliper the more powerful the brake (equation for pressure = force X area). However the higher this ratio the more fluid the lever piston must displace to cause movement of the caliper pistonthats what the holes are for.... The holes are primarily for heat dissapation, cleaning crap/water off the pads and weight loss. They do not specifically improve the braking performance of a disc.There sharp enough they won't need to be any sharper.Where are they sharp? A decent disc should have been ground properly and have no sharp edges making contact with the pads, although if you run your finger on one of the holes (not recomended, oils from your skin can affect brake performance) it is a very square edge and it may be possible to cut yourself on it. Edited January 31, 2006 by Shaun H Quote Link to comment Share on other sites More sharing options...
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