zoonick Posted May 22, 2007 Report Share Posted May 22, 2007 hiI know you can bleed maggies with water but i have never heard if its possible to bleed disc brakes with water. At the moment im using a hope mono trial disc brake. so im wondering if i'll be able to bleed this the same way as you bleed maggies. Fill a bath with water add anti freeze put the brake under water (after removing the 3mm and 5mm bolts) then pull the lever 200 times. So is this safe to do with my hope or am i going to break it. thanks alot zoonick Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted May 22, 2007 Report Share Posted May 22, 2007 Nooooo way.Magura's have plastic internals, meaning they don't really need oiling up that much.From what I understand, Hope's have metal internals, meaning they really need oiling up that much. - Water+Hope=bad.Bad= seized pistons+wasted money. Quote Link to comment Share on other sites More sharing options...
zoonick Posted May 22, 2007 Author Report Share Posted May 22, 2007 thanks alot you have saved me quite a bit of money. im going to put that towards a hope bleed kit by the looks of things. thanks alot. Quote Link to comment Share on other sites More sharing options...
RobinJI Posted May 22, 2007 Report Share Posted May 22, 2007 You don't need a bleed kit for hopes, just an ice-cream tub, a length of hose that pushes on the bleed nipple, some dot 5.1 fluid, and the guide to bleeding on the hope website. NEVER EVER BLEED DISCS WITH WATER!!! It's not a matter of it damaging them from the fluid it's self, it's just that discs get hot, often very hot, so the water will boil the first time you go down a hill, this will force steam through your seals, probably shagging them, and definitely requiring a bleed. The last guy I know to think, 'meh, it'll be ok for a little bit,' boiled his break the 1st time he got on the bike. Quote Link to comment Share on other sites More sharing options...
Mod Man Leo Posted May 23, 2007 Report Share Posted May 23, 2007 You don't need a bleed kit for hopes, just an ice-cream tub, a length of hose that pushes on the bleed nipple, some dot 5.1 fluid, and the guide to bleeding on the hope website. NEVER EVER BLEED DISCS WITH WATER!!! It's not a matter of it damaging them from the fluid it's self, it's just that discs get hot, often very hot, so the water will boil the first time you go down a hill, this will force steam through your seals, probably shagging them, and definitely requiring a bleed. The last guy I know to think, 'meh, it'll be ok for a little bit,' boiled his break the 1st time he got on the bike.yeah, they also take DOT 4 Quote Link to comment Share on other sites More sharing options...
Up'n'away Posted May 23, 2007 Report Share Posted May 23, 2007 Boil?!! Surely not? Well, yeah dont think i have heard people using water for many reasons.. Its says clearly on the Reservoir cap what to use. Yes, normaly Dot 5.1 or 4? Quote Link to comment Share on other sites More sharing options...
Danny Swindlehurst Posted May 23, 2007 Report Share Posted May 23, 2007 disc brakes are not like maggies , you cant use whatever you want in them they will proberly corode easier, you might as well use the dot 4 or 5 then atleast its oreet ...dannyy Quote Link to comment Share on other sites More sharing options...
Boswell Posted May 23, 2007 Report Share Posted May 23, 2007 WD40 would be good in hydrolic disk breaks, wouldn't it? Quote Link to comment Share on other sites More sharing options...
Broomer Posted May 23, 2007 Report Share Posted May 23, 2007 The last guy I know to think, 'meh, it'll be ok for a little bit,' boiled his break the 1st time he got on the bike.Yeah he had to buy a new brake afterwards, the brake is now on my desk requiring all new seels in the lever. Quote Link to comment Share on other sites More sharing options...
punchtrials Posted May 23, 2007 Report Share Posted May 23, 2007 water rules!!!!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
jasonoxley221 Posted May 23, 2007 Report Share Posted May 23, 2007 noooooooooo way don't mate, don't do it Quote Link to comment Share on other sites More sharing options...
ruption0 Posted May 23, 2007 Report Share Posted May 23, 2007 WHAT!!!! are you off your nut, bleeding maggies with water. you do realise that damages the inside of them dont you? Quote Link to comment Share on other sites More sharing options...
powerz Posted May 23, 2007 Report Share Posted May 23, 2007 Water feels the best in hs33's IMO but do NOT use water in disc's for reasons which have already been covered further up. Quote Link to comment Share on other sites More sharing options...
Peaky Posted May 23, 2007 Report Share Posted May 23, 2007 (edited) I have never used water in my magura's and I can't see the point. A well bled set that are done with magura blood are going to perform way better in the long run than some that are filled with water.1. If your brakes get hot (like if you leave them in the sun) then you will get steam building up in the brake meaning that they will go spongey. 2. Not only is magura blood not water and therefore not prone to boiling until at much higher temperatures, it is also much cleaner than water. Water contains limescale which could deposit itself on parts of the cylinder and piston scratching them and causing leaks as well as containing loads of bacteria and micro organisms so its quite likely that you will have a load of green gunk floating around in your brake too!I don't see how any of the above can be good. The only time that I would ever use water is if I needed to urgently bleed my brake for a ride and I didn't have the proper bleed kit. I would then flush out the whole system and pump it full of fresh magura blood as soon as I had the chance.I ran a set of magura's for 5 years with magura blood and I never bled them once! They never became spongey and they never leaked. They are in fact still going strong on my friends bike having had a bleed (with Magura blood) when I fitted them to his bike. In my opinion the only time a bleed is necassary is when you tear a hose out, change the length of a hose or if they do for whatever reason become spongey.As for using water in a disc brake though, DO NOT USE WATER. You will have major issues with boiling as mentioned above! Edited May 23, 2007 by Peaky Quote Link to comment Share on other sites More sharing options...
Krisboats Posted May 23, 2007 Report Share Posted May 23, 2007 Right okay, ruption... no it doesn't... end of!Peaky, it feels so much nicer and once you've had water oil feels horrible. I've had mine bled with water for over 2 years now and not had a problem apart from having one of the pad nipples snap off, but then thats not anything to do with water. It won't wreck your seals, it wont boil in a hs33 and it doesn't "go spongey in the warm weather". If you live in a hard water area using de-ionised water is your best bet, if not you'll be fine. The bacteria and micro organisms don't do anything except die off in your brake from multiple concusions after being bashed against the hosing.however, in a disc brake... using water will most certainly boil. It might be alright BRIEFLY in a magura brake, but not a chance in a hope one. The discs i've had always get hot enough to boil water on the rotor after applying the brakes for a short amount of time, so one stoppie and your brake wouldn't work. Quote Link to comment Share on other sites More sharing options...
Adam-Griffin Posted May 24, 2007 Report Share Posted May 24, 2007 water rules!!!!!!!!!!!!oh my god what a pointless , stupid and annoying thing to post , bet you feel good now you got that off your chest! Quote Link to comment Share on other sites More sharing options...
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