JohnBanks Posted April 14, 2007 Report Share Posted April 14, 2007 hi,I have a magura hs33 and i have re bled it(with water) so there there is no bubbles in the sistem and it is still realy bad. Could it be a slow piston if so how could i fix it. help would be much apreciated. Quote Link to comment Share on other sites More sharing options...
Grant H Posted April 14, 2007 Report Share Posted April 14, 2007 may not have got all the air out, how did you bleed it by the way? Quote Link to comment Share on other sites More sharing options...
JohnBanks Posted April 14, 2007 Author Report Share Posted April 14, 2007 i bled it in the bath so there is no air in there what so ever. Quote Link to comment Share on other sites More sharing options...
JT! Posted April 14, 2007 Report Share Posted April 14, 2007 How slow? Quote Link to comment Share on other sites More sharing options...
harmertrials Posted April 15, 2007 Report Share Posted April 15, 2007 Probably the best thing to do (I did) is follow this guide... It really does work http://www.trials-forum.co.uk/forum/index....+magura+pistons . Then give it another bath bleed afterwards; just remember to pump the lever for at least a hundred times. You know when it’s ready though I guess. Also when you put the brake back on the bike try and position the pads perfect. There are a couple of ways of doing this:1) Put a coin in between the pad and the rim (a small coin obviously) and tighten up the bolts whilst pushing the cylinder against the coin.2) Push the pads as far in as you can so they are touching the rim, making sure they are flat on the rim ever so slightly pull the brake lever so they pull out about 2mm (then they will be perfectly level on the rim)3) Just set them up how you like them... About a year ago I made a contraption to help me with magura bleeds, its basically three plates of steel welded together in a 'U' shape with a magura brake booster welded to the top. I then drilled threads into the sides so it’s like the part of your frame where your magura goes. You then clamp this into a vice and pop a rim in the middle (I made sure all the measurements where the same as my frame). Then you fit your freshly bled magura and test it before you go through the hassle of setting it up on the bike. Quote Link to comment Share on other sites More sharing options...
Grant H Posted April 15, 2007 Report Share Posted April 15, 2007 Probably the best thing to do (I did) is follow this guide... It really does work http://www.trials-forum.co.uk/forum/index....+magura+pistons . Then give it another bath bleed afterwards; just remember to pump the lever for at least a hundred times. You know when it’s ready though I guess. Also when you put the brake back on the bike try and position the pads perfect. There are a couple of ways of doing this:1) Put a coin in between the pad and the rim (a small coin obviously) and tighten up the bolts whilst pushing the cylinder against the coin.2) Push the pads as far in as you can so they are touching the rim, making sure they are flat on the rim ever so slightly pull the brake lever so they pull out about 2mm (then they will be perfectly level on the rim)3) Just set them up how you like them... About a year ago I made a contraption to help me with magura bleeds, its basically three plates of steel welded together in a 'U' shape with a magura brake booster welded to the top. I then drilled threads into the sides so it’s like the part of your frame where your magura goes. You then clamp this into a vice and pop a rim in the middle (I made sure all the measurements where the same as my frame). Then you fit your freshly bled magura and test it before you go through the hassle of setting it up on the bike.why isn't he validated Quote Link to comment Share on other sites More sharing options...
Lawnmowerman Posted April 15, 2007 Report Share Posted April 15, 2007 Hold the oposite piston, pull the lever so the slow one comes out and spray some gt85 on it, then pump the lever for a bit to get it lubed up. Quote Link to comment Share on other sites More sharing options...
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