Dan6061 Posted July 24, 2007 Report Share Posted July 24, 2007 Got a strange problem with my Echo brake. After finding out the thread in the TPA was a bit fecked, I took it all out, fiddled with it a bit, then got it working again.But now the brake is actualy SOLID just as the pads touch the rim. It's not even set up that brilliantlt, but there's no flex at all. Even when it felt fine yesterday (tiny bit of flex, how I like it)No matter how close the pads are to the rim, the lever is nearly at the bars. Even after i've bled it properly.It's like the piston is bottoming out, but it's properly bled and set up? Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 24, 2007 Report Share Posted July 24, 2007 If the pads are close and the piston is bottoming out... it can't be bled properly Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted July 24, 2007 Author Report Share Posted July 24, 2007 But it is? I'm sure of it.Strange how when I ride in my village it works awesome, then today it was barely working.Thing is, it seems to bottom out JUST as the pads touch the rim, so it can stop me, but doesn't hold or anything. Quote Link to comment Share on other sites More sharing options...
RR_Trials Posted July 24, 2007 Report Share Posted July 24, 2007 We had that problem with ours, they are a bitch to bleed right.. Quote Link to comment Share on other sites More sharing options...
Janson Posted July 24, 2007 Report Share Posted July 24, 2007 Good way to see if it is bled right is to use one hand to pull the lever and one hand to feel the pads. If the pads start moving just as you start pulling the lever, it should be pretty much air free.i did a perfect bleed today with the help of peter b, but we had to let some water out because my pads are too close to the rim. with the tpa all the way out the lever would bite too far out, and i cant be bothered adjusting the pads. Quote Link to comment Share on other sites More sharing options...
Fixed Pants™ Posted July 25, 2007 Report Share Posted July 25, 2007 (edited) Bad bleed, definetly.I had it on my 05 front magura, exact same feel/problem, sorted by a better [bath] bleed.And, when it was f**ked, the tpa tended to slip down the thread on the pokey bit, as it was a bit fecked, then when i bled it again, it was fine.Fairly sure it was because i bled it with the TPA all the way in, even though i was sure it was all the way out. Edited July 25, 2007 by Fat Pants Quote Link to comment Share on other sites More sharing options...
Ash-Kennard Posted July 25, 2007 Report Share Posted July 25, 2007 i had this yesterday as my maggie is leaking, a good bleed later on the ride and the brake was excellent again Quote Link to comment Share on other sites More sharing options...
Greetings Posted July 25, 2007 Report Share Posted July 25, 2007 Has somebody got a blueprint of the lever body? Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted July 25, 2007 Author Report Share Posted July 25, 2007 Well before I did a bath bleed, which was perfect!This time I connected it to my hose (garden tap) and blasted water through it. Will have to do a bath bleed again then. It'll scratch the paint off my bars. Quote Link to comment Share on other sites More sharing options...
Shaun H Posted July 25, 2007 Report Share Posted July 25, 2007 Well before I did a bath bleed, which was perfect!This time I connected it to my hose (garden tap) and blasted water through it. Will have to do a bath bleed again then. It'll scratch the paint off my bars. There's usually air bubbles in the mains you numpty! Quote Link to comment Share on other sites More sharing options...
Janson Posted July 25, 2007 Report Share Posted July 25, 2007 What's wrong with a syringe bleed?! Quote Link to comment Share on other sites More sharing options...
Krisboats Posted July 25, 2007 Report Share Posted July 25, 2007 But it is? I'm sure of it.This time I connected it to my hose (garden tap) and blasted water through it. Thats your problem right there. The force the waters coming out at excites the water molecules and you get random pockets of air/hydrogen coming out.... which will now be inside your brake. You need to do it with still water or at the most, to squirt it through with a syringe slowly. Quote Link to comment Share on other sites More sharing options...
eskimo Posted July 25, 2007 Report Share Posted July 25, 2007 Sorry but i can't help but laugh. How much do they cost again? It just seems silly that the Magura is easier to bleed. I'm suprised Deng hasn't released a special Bleeding kit already. Quote Link to comment Share on other sites More sharing options...
Janson Posted July 25, 2007 Report Share Posted July 25, 2007 Seeing as most brits tend to use the bath tub for some reason, Deng will probably just CNC mill a one-piece tub in "7075" aluminium. Quote Link to comment Share on other sites More sharing options...
Ash-Kennard Posted July 25, 2007 Report Share Posted July 25, 2007 Seeing as most brits tend to use the bath tub for some reason, Deng will probably just CNC mill a one-piece tub in "7075" aluminium.hahadeng bleeding tubs, in any anodised colour Quote Link to comment Share on other sites More sharing options...
grantallsop Posted July 25, 2007 Report Share Posted July 25, 2007 My mate had this problem he just flogged them on ebay. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 25, 2007 Report Share Posted July 25, 2007 It's not actually a problem with the brake though, it's just not being able to bleed brakes... Quote Link to comment Share on other sites More sharing options...
duane Posted July 25, 2007 Report Share Posted July 25, 2007 Hi, I had trouble bleeding mine, but Adam suggested that as a final step I screw a length of hose into the lever bleed hole and then pull the lever to squeeze out any air trapped in the body. It worked so well, I went a little further and screwed the TPA all the way in, then pulled the lever to the bar, loads of air bubbles travelled up the length of hose, then I topped up the hose with enough oil to let the lever back out, then i carried on topping up the hose as i needed to while backing out the TPA. Brake works great now, it was horrible before i did this.Hope it helps Duane. Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted July 25, 2007 Author Report Share Posted July 25, 2007 The hose bleed worked on my Magura... I'll bath bleed it tomorrow.Gunna scratch my bars. Quote Link to comment Share on other sites More sharing options...
gr8grumble Posted July 25, 2007 Report Share Posted July 25, 2007 might not even be the bleed, maybe when you fiddled with the tpa...you broke it, is the tpa actually working now? try a different tpa.. Quote Link to comment Share on other sites More sharing options...
T.McMillan Posted July 25, 2007 Report Share Posted July 25, 2007 (edited) hahadeng bleeding tubs, in any anodised colourwell goodEDIT: guys can anybody help, what size thread is it where the hose connects into the lever, is it M6x1.0 or M8x0.75, and what is it at the hose end that comes from the lever into the caliper? Adam@tartybikes can you help? Edited July 25, 2007 by speedyjustice Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 26, 2007 Report Share Posted July 26, 2007 what size thread is it where the hose connects into the lever, is it M6x1.0All fittings are that size As Duane said, there is a little trick to get a perfect bleed. Obviously you need a syringe/bleed hose to do it, but you should have one anyway, you can't bleed a good brake without one... Quote Link to comment Share on other sites More sharing options...
lil Jsy Chris Posted July 26, 2007 Report Share Posted July 26, 2007 I had exactually the same problem with my brake but after a bleed it was much better.Chris Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted July 27, 2007 Author Report Share Posted July 27, 2007 Right, Just bath bled it.Was perfect once I'd finished.Put it on the bike, set it up, wound the TPA in a bit until it felt right, then it went mushy and was coming back to the bar?The pistons haven't slipped in the mounts, and it's not showing any obvious signs of leaking.I wound the TPA out, pulled it, and the pads barely move.So it's leaking from somewhere, but I can't figure out where? - All hoses are done up, bleed bolts are tight, hose is fine.Lever piston looks fine. Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted July 28, 2007 Author Report Share Posted July 28, 2007 How the feck do I bleed this brake properly? Pointed the lever at the floor, then bled it with the syringe on the caliper piston, and let the water come out the lever. Then do the lever bleed bolt up when it's just water coming through, then take the syringe and piper out, and put the other bleed bolt in. All with the TPA out.. Feels mint at first, do up the TPA, then undo it to check, and it's just crap again... Quote Link to comment Share on other sites More sharing options...
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