DeeZee Posted December 13, 2005 Report Share Posted December 13, 2005 Hiya, I've come to extract more of everyone's lovely brain goo / knowledge. (And yes, I have searched for similar problems)My problem is the rear Magura HS33 on my Onza T-Rex keeps slipping when I'm trying to tighten it up. So the pad never sits parallel to the rim, its always pointing a little bit in or out. Also one of the cylinders always takes up all the adjustment on the TPA, so I have loads of problems getting both pads to sit an equal distance off the rim.Is there any fool-proof way of getting the pad to sit dead parallel to the rim? And how can I stop one of the cyclinders being lazy so it takes up all the adjustment? I'm getting sick of the brakes not locking dead tight, the wheel slipping, and me pedal kicking the bike into oblivion, while I land square on my arse Thanks Quote Link to comment Share on other sites More sharing options...
san Posted December 13, 2005 Report Share Posted December 13, 2005 Got the same problem like you.Just get good brake pads (koxx bloxx) and set the brake as good as possible.Than just go have some fun and the blocks will wear parallel to the rim.At least thats the way i did my brakes.-san Quote Link to comment Share on other sites More sharing options...
MesaMan Posted December 13, 2005 Report Share Posted December 13, 2005 Same problem, one cylinder is always further away than the other, seems to slip out once adjusted and tightened to near shearing.Are the sleves crap? Any better if so? How tight do you guys tighten them?P.S. Try a grind instead of that black crapLOL Quote Link to comment Share on other sites More sharing options...
DeeZee Posted December 13, 2005 Author Report Share Posted December 13, 2005 I think you'll find that the "Black Crap" AKA "The Poo of Christ" is amazing. Tar saves many trials lives. Ask any Vietnam Veteran, and he'll tell you the same.But yer, I do find that the sleeve isn't sitting dead true in the clamp.... but thats part of the problem, when tightening up the clamps the sleeve slips with the cylinder. Come on, Someone must have a good idea how to set up the cylinders parallel without them slipping? Quote Link to comment Share on other sites More sharing options...
JT! Posted December 13, 2005 Report Share Posted December 13, 2005 (edited) I think i know what your on about. You get the brake set up just right and you tighten the bolts and it moves. Trez annoying.What i found is best is to take the clamp to bits, take the black rubbery sleeve out and but i back on the other way round and try again, or just spin it so the clamps are clamping down on a different bit. The reason it moves is becuase it likes to slip back into the groove it made preivously. If you take it off and spin it round, chances are it wont slip back into any past possitions.As of the lazy pistion, the fullproof way of sorting it out is to undo the tpa right off, and then set the brakes up so that you only need a small amount of tpa on. I'v heard of some people using a 2p coin to get the distence from the rim correct.The more tpa you have on the worse the lasy piston will be.Good luck. Oh, and for the slippage what pads are you using. If your about to say magura blacks / koolstops. You need to get some new pads befor you even start to think about setting up our brake better. Edited December 13, 2005 by JT! Quote Link to comment Share on other sites More sharing options...
DeeZee Posted December 13, 2005 Author Report Share Posted December 13, 2005 Do you think the problem may also be that my stock T-rex (spec 1) has a thinish rear rim? Because I have to push the cylinders all the way in, and do a few turns on the TPA before the pads bite in properly.I'm not sure of standard rim sizes? but I would have thought that I shouldn't have to push the cylinders all the way in. Quote Link to comment Share on other sites More sharing options...
petit_pablo Posted December 13, 2005 Report Share Posted December 13, 2005 Do you think the problem may also be that my stock T-rex (spec 1) has a thinish rear rim? Because I have to push the cylinders all the way in, and do a few turns on the TPA before the pads bite in properly.I'm not sure of standard rim sizes? but I would have thought that I shouldn't have to push the cylinders all the way in.That wont help, especially as the pads wear down and you have to wind the TPA in.I had a mavic d521 on my pitbull and i just couldnt get the maggies in far enough. Gave up and got an onza hog rim instead. Much easier.As for setting the brakes up, the black plastic sleeves get crushed quite easily, and as JT said, the clamp wants to sit in its original grooves. I bought a new set of sleeves. They are pretty cheap t buy. Quote Link to comment Share on other sites More sharing options...
DeeZee Posted December 13, 2005 Author Report Share Posted December 13, 2005 (edited) OK, Cheers guys, some good practical advice..... I'm off to find somewhere to buy sleeves from. Or just rotate them. As for a new rear wheel, well I've knackered the bearings on my hub, so was thinking of getting a whole brand spanking, shiney new rear wheel. I've seen Onza Ronnie Rims, or Hogs.... but I dunno if a hog is perhaps to wide.... Edited December 13, 2005 by DeeZee Quote Link to comment Share on other sites More sharing options...
petit_pablo Posted December 13, 2005 Report Share Posted December 13, 2005 OK, Cheers guys, some good practical advice..... I'm off to find somewhere to buy sleeves from. Or just rotate them. As for a new rear wheel, well I've knackered the bearings on my hub, so was thinking of getting a whole brand spanking, shiney new rear wheel. I've seen Onza Ronnie Rims, or Hogs.... but I dunno if a hog is perhaps to wide....The hog is wide as fook. A ronnie would be fine Quote Link to comment Share on other sites More sharing options...
wilky_mod_legend2 Posted December 13, 2005 Report Share Posted December 13, 2005 wen i space my brakes i use 2ps or 1's den push against dem whilst your doin up bolts works every timewilky Quote Link to comment Share on other sites More sharing options...
downhill_rob2@hotmail.com Posted December 13, 2005 Report Share Posted December 13, 2005 Get the Echo 2005 rim mate (if your getting a new wheel)and, is it when you tighten the maggy bolts, when you pull the lever, does the pison move out?asif the bolts are still loose?Or have we sorted that problem? Quote Link to comment Share on other sites More sharing options...
DeeZee Posted December 14, 2005 Author Report Share Posted December 14, 2005 Nah, the piston stays still, The pistons stays clamped, its just when tightening up the clamps, it ALWAYS kicks off so its not dead parallel.As for the Rim, Cheers for the advice i'll have a search on the forum for decent stock rims, see what info turns up..... if not, i'll start a short topic on it........ maybe Quote Link to comment Share on other sites More sharing options...
anzo Posted December 14, 2005 Report Share Posted December 14, 2005 Easy fix for the crappy sleeves. Get some ptfe tape (or plumbers tape) (click for photo) its very very cheap, get it at most DIY shops like B&Q.Simply apply a little bit around the thread like bit on the cylinder, and then apply sleeve over it, position the sleeve where you want it, squeeze the sleeve (to 'lock it' into place) and put it back onto the bike, and tighten it up. Quote Link to comment Share on other sites More sharing options...
deanie-b Posted December 14, 2005 Report Share Posted December 14, 2005 I like falling on my ass Get Plazmatics\Koxx Bloxx, use a tiny smidgeon of tar and a grind, a nice wide rim, And you should be in heaven Oh, and make sure your brakes are set up properly with a airless bleed Quote Link to comment Share on other sites More sharing options...
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