ilikeriding Posted February 15, 2008 Report Share Posted February 15, 2008 (edited) Right, first off my hs33 has been bled through fine, no air in the system, the pistons return quickly and respond immediately when you pull the lever. The problem is that they move out to nowhere near their full extent when the lever is pulled. This means that even when the pads are close to the rim, the lever needs to be pulled nearly to the bar.Secondly, I've just replaced the pads on my BB7 and put a new disc on after the last pads and disc were contaminated, its all set up fine and should have bedded in by now, there is no way that the new disc/pads could have been contaminated. The brake is soooo noisy, and the hold isn't great, the only thing I can think of is that the pads might be glazed, if they are, will if stop of its own accord?.....fixed:) Edited February 15, 2008 by jebend Quote Link to comment Share on other sites More sharing options...
Jsy Ben Posted February 15, 2008 Report Share Posted February 15, 2008 Not to sure whats up with your maggy, might just me being abit silly but have you tried the TPA? - probably yes, set the pads square and as close as possible to the rim? Tried the lil' grub screw on your lever which adjusts your lever reach - wind that in a little with a 3mm allen key so your pads start closer to the rim, like I said - I'm not sure... I'm better at actually seeing and doing/fixing problems rather than trying to explain ...But as for your disc, boil the kettle and pour it over your pads/caliper area of your disc and ride with it on up and down like a 10-15m section (like outside your house) stoppying and generally just holding the brake on at different points, keep repeating the pouring and riding with the brake on. I find after using about 1L of boiling water from the kettle my discs working superb after going through a "funny" stage.Failing that, like you said, the pads could be a little glazed so rough them up with some sandpaper and if need be do the hot water trick too Best of luck with it Quote Link to comment Share on other sites More sharing options...
TrAsHeR Posted February 15, 2008 Report Share Posted February 15, 2008 When you bled the magura did you make sure that the TPA was fully out ?And for the bb7 that happened to me just ride along doing stoppies and keeping the brake on to heat the disk up.Then poor some water on it and you should see the water evaporate making a small noise.Do that a few times and It should work perfect if not then sand the pads and put the rotor into boiling water Quote Link to comment Share on other sites More sharing options...
steve@banbury-trials Posted February 15, 2008 Report Share Posted February 15, 2008 not sure about the bb7 but have you checked for cracks in the lever/pistons?or a tiny split in the hose? my brake was as you described,checked it earlyier and there was a crack below the bleed bolts,hopefully its sorted the problem now i've changed the lever.steve Quote Link to comment Share on other sites More sharing options...
ilikeriding Posted February 15, 2008 Author Report Share Posted February 15, 2008 (edited) Not to sure whats up with your maggy, might just me being abit silly but have you tried the TPA? - probably yes, set the pads square and as close as possible to the rim? Tried the lil' grub screw on your lever which adjusts your lever reach - wind that in a little with a 3mm allen key so your pads start closer to the rim, like I said - I'm not sure... I'm better at actually seeing and doing/fixing problems rather than trying to explain ...But as for your disc, boil the kettle and pour it over your pads/caliper area of your disc and ride with it on up and down like a 10-15m section (like outside your house) stoppying and generally just holding the brake on at different points, keep repeating the pouring and riding with the brake on. I find after using about 1L of boiling water from the kettle my discs working superb after going through a "funny" stage.Failing that, like you said, the pads could be a little glazed so rough them up with some sandpaper and if need be do the hot water trick too Best of luck with it Did the boiling water thing, worked a treat thanksWhen you bled the magura did you make sure that the TPA was fully out ?And for the bb7 that happened to me just ride along doing stoppies and keeping the brake on to heat the disk up.Then poor some water on it and you should see the water evaporate making a small noise.Do that a few times and It should work perfect if not then sand the pads and put the rotor into boiling waterThe tpa is stuck in the fully out position, actually the brake did freeze the other day, that might be whats caused itnot sure about the bb7 but have you checked for cracks in the lever/pistons?or a tiny split in the hose? my brake was as you described,checked it earlyier and there was a crack below the bleed bolts,hopefully its sorted the problem now i've changed the lever.steveI think I've found what might be the tinyest split ever in the hose, but it doesnt seem to leak I could just buy a new one but it seems like a waste of money Edited February 15, 2008 by jebend Quote Link to comment Share on other sites More sharing options...
cai Posted February 15, 2008 Report Share Posted February 15, 2008 Right, first off my hs33 has been bled through fine, no air in the system, the pistons return quickly and respond immediately when you pull the lever. The problem is that they move out to nowhere near their full extent when the lever is pulled. This means that even when the pads are close to the rim, the lever needs to be pulled nearly to the bar. Perhaps you have very lazy pistons? If so follow this guide to fix them - it's worth a try! Quote Link to comment Share on other sites More sharing options...
Ben John-Hynes Posted February 15, 2008 Report Share Posted February 15, 2008 not sure about the bb7 but have you checked for cracks in the lever/pistons?or a tiny split in the hose? my brake was as you described,checked it earlyier and there was a crack below the bleed bolts,hopefully its sorted the problem now i've changed the lever.steveGodddddd,You're ALWAYS breaking maggies! Quote Link to comment Share on other sites More sharing options...
Jsy Ben Posted February 15, 2008 Report Share Posted February 15, 2008 Did the boiling water thing, worked a treat thanksThe tpa is stuck in the fully out position, actually the brake did freeze the other day, that might be whats caused itI think I've found what might be the tinyest split ever in the hose, but it doesnt seem to leak I could just buy a new one but it seems like a waste of moneyYour welcome If the tpa is stuck on "full" take the lever out (5mm allen key bolt bit) then bleed it - therefore equivalantly bleeding it with tpa all the way off.Replace your hosing its fairly cheap like a couple of quid per metre, bit of faffing around with getting the barbs back in place but it'l be worth it...Don't buy a new one, your right - its a waste of money, even buying a second hand one. Quote Link to comment Share on other sites More sharing options...
steve@banbury-trials Posted February 16, 2008 Report Share Posted February 16, 2008 oww yes,btw i never have been able to get my brake as good as it was before that bloke on the december brum ride broke my crossover never mind lolsteve Quote Link to comment Share on other sites More sharing options...
Captain Scarlet Posted February 16, 2008 Report Share Posted February 16, 2008 Is your TPA running smoothly?I had the symptons you described, and it was due to the threads on the TPA wearing over time.So if theres no thread it can't grip the rod and therefore create a spongey brake, which comes back to the bars.I bought myself a nice metal TPA and my problems were all sorted. Quote Link to comment Share on other sites More sharing options...
Ben John-Hynes Posted February 16, 2008 Report Share Posted February 16, 2008 Is your TPA running smoothly?I had the symptons you described, and it was due to the threads on the TPA wearing over time.So if theres no thread it can't grip the rod and therefore create a spongey brake, which comes back to the bars.I bought myself a nice metal TPA and my problems were all sorted.haha Quote Link to comment Share on other sites More sharing options...
Oli Smith Posted March 30, 2008 Report Share Posted March 30, 2008 oh? all my questions answered Quote Link to comment Share on other sites More sharing options...
cai Posted March 30, 2008 Report Share Posted March 30, 2008 oh? all my questions answered And why did you 'bump' this? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.