Ewan R Posted October 10, 2012 Report Share Posted October 10, 2012 Hi, every time I seem to adjust my pads and get them lined up with the rim I go for a ride and the pads move out of position..... how do I prevent this?? Cheers Quote Link to comment Share on other sites More sharing options...
Rockman Posted October 10, 2012 Report Share Posted October 10, 2012 What clamps you got? First off I'd try greasing the bolts and tightening them up a bit more. Quote Link to comment Share on other sites More sharing options...
ULtrialsguy Posted October 10, 2012 Report Share Posted October 10, 2012 I have the same problem and my bolts are as tight as I can get them. I'm gonna buy a new echo clamp and see if that solves the problem. Quote Link to comment Share on other sites More sharing options...
trialsiain Posted October 10, 2012 Report Share Posted October 10, 2012 Stripped thread maybe ? Quote Link to comment Share on other sites More sharing options...
Pete.M Posted October 10, 2012 Report Share Posted October 10, 2012 Do your pads fill the space between the 'prongs' on the slave? (Is there a technical name for those things?) On my old bike the zoo pads didn't really fill the space so they used to wobble around a bit, but not enough to take them totally out of alignment. Quote Link to comment Share on other sites More sharing options...
BradJohnson Posted October 10, 2012 Report Share Posted October 10, 2012 Pads are supposed to move when you press the lever. Quote Link to comment Share on other sites More sharing options...
ULtrialsguy Posted October 10, 2012 Report Share Posted October 10, 2012 Pads are supposed to move when you press the lever. Very observant of you. Seriously though in my case at least I think it's the useless clamp that I have. It's a standard magura clamp with the plastic washers. No stripped threads, bolts are very tight. I line it up correctly and after a while of riding the whole cylinder moves so that the pad hits the tyre. I've pretty much given up fixing it so going to try a new clamp as already said. Anyway thats probably what your problem is Ewan. If it isn't not sure what else would cause or fix it. Quote Link to comment Share on other sites More sharing options...
BradJohnson Posted October 10, 2012 Report Share Posted October 10, 2012 Tpa could be fooshed. It's always the case when my brake does the same thing. Quote Link to comment Share on other sites More sharing options...
SamKidney Posted October 11, 2012 Report Share Posted October 11, 2012 Standard Magura clamps with 2mm ground off, SL cylinder washers and greased bolts. Proper clamping force. Its my setup and it doesn't budge at all. 1 Quote Link to comment Share on other sites More sharing options...
Duncy H Posted October 11, 2012 Report Share Posted October 11, 2012 It's likely to be that the plastic cylindrical things that sit around the cylinder have past their prime. 1 Quote Link to comment Share on other sites More sharing options...
weegav Posted October 11, 2012 Report Share Posted October 11, 2012 If you have the TPA up a fair bit it causes the part of the slave cylinder that pushes the pads out to sit out of the slave body and when you push it in the other side pushes out. Quote Link to comment Share on other sites More sharing options...
Revolver Posted October 11, 2012 Report Share Posted October 11, 2012 Yeah mang, check your clamps. It could be duff plastic washers, clamps that are too big - file them thinner at the bolts - or the bolts are bottoming out. You could also wrap the cylinders in tape... Quote Link to comment Share on other sites More sharing options...
williams Posted October 11, 2012 Report Share Posted October 11, 2012 It's the piston in the slave cylinder (the thing that you click the pad onto) that is moving because of the TPA pressure. Try to set your brake up with no TPA pressure at all. Quote Link to comment Share on other sites More sharing options...
Ewan R Posted October 16, 2012 Author Report Share Posted October 16, 2012 Very observant of you. Seriously though in my case at least I think it's the useless clamp that I have. It's a standard magura clamp with the plastic washers. No stripped threads, bolts are very tight. I line it up correctly and after a while of riding the whole cylinder moves so that the pad hits the tyre. I've pretty much given up fixing it so going to try a new clamp as already said. Anyway thats probably what your problem is Ewan. If it isn't not sure what else would cause or fix it. Thanks, I think that is exactly what is going on, i might try grounding down the clamps and using tape before trying new clamps. Thanks! Standard Magura clamps with 2mm ground off, SL cylinder washers and greased bolts. Proper clamping force. Its my setup and it doesn't budge at all. Do you ground off the bottom of the clamp so that when it is tight it pulls straight down the magura? thanks Yeah mang, check your clamps. It could be duff plastic washers, clamps that are too big - file them thinner at the bolts - or the bolts are bottoming out. You could also wrap the cylinders in tape... Where exactly do you file them thinner I have never done it before? is it at the bottom so that the clamp is tightened directly onto the magura? Also does the tape work for long term? Thanks! Quote Link to comment Share on other sites More sharing options...
Revolver Posted October 16, 2012 Report Share Posted October 16, 2012 http://www.tartybikes.co.uk/images/custom/large_maguraclampssilver.jpg Can you see how there's a gap in between the clamps? There's a little bit at each end that you can file down. Tape works a little but it makes setting up your brake harder. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted October 16, 2012 Report Share Posted October 16, 2012 Can you see how there's a gap in between the clamps? There's a little bit at each end that you can file down. Yep, that works a treat on those clamps (they are the best clamps ever by the way, when combined with Echo alloy washers), but DON'T file the tabs off on TNNs etc. 1 Quote Link to comment Share on other sites More sharing options...
SamKidney Posted October 16, 2012 Report Share Posted October 16, 2012 Yep, that works a treat on those clamps (they are the best clamps ever by the way, when combined with Echo alloy washers), but DON'T file the tabs off on TNNs etc. My setup! Works an absolute treat. Quote Link to comment Share on other sites More sharing options...
Ewan R Posted October 16, 2012 Author Report Share Posted October 16, 2012 Cheers guys, I have tensile clamps so I will file them down. Also i have seen on the forum that the bolts from tensile are quite long and they don't tighten properly, is that true? Yep, that works a treat on those clamps (they are the best clamps ever by the way, when combined with Echo alloy washers), but DON'T file the tabs off on TNNs etc. http://www.tartybike...lampssilver.jpg Can you see how there's a gap in between the clamps? There's a little bit at each end that you can file down. Tape works a little but it makes setting up your brake harder. Quote Link to comment Share on other sites More sharing options...
Revolver Posted October 16, 2012 Report Share Posted October 16, 2012 Also i have seen on the forum that the bolts from tensile are quite long and they don't tighten properly, is that true? Yes,. that's true, that's what happened with mine. You can cut quite a bit off. Quote Link to comment Share on other sites More sharing options...
Andeee Posted October 16, 2012 Report Share Posted October 16, 2012 (edited) Have you looked at all the bolts to ensure they are at an equal height when tightened. i come across a problem other day where the bolt head had expanded the hole in the clamps for the bolt(So the bolt was literally stuck deep down between the sides of the clamp). So i had to get a wide washer to resolve it. ( I did have washers before but they was long gone in the mounts.) Echo TR clamps btw Edited October 16, 2012 by Andeee Quote Link to comment Share on other sites More sharing options...
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