planet x alan Posted March 25, 2006 Report Share Posted March 25, 2006 i got a hope m4 sat in my shed feeling all sorry for itself and i was wondering if it would be ok to bleed it with water? does this work anyone done it?cheers Quote Link to comment Share on other sites More sharing options...
Technical Tom Posted March 25, 2006 Report Share Posted March 25, 2006 (edited) No, because water is too thin for disc brake.Tom. Edited March 25, 2006 by onza_tom123 Quote Link to comment Share on other sites More sharing options...
Ben Geary Posted March 25, 2006 Report Share Posted March 25, 2006 My mates is and to be onist it feels shit, don't do it - do it propperly. Quote Link to comment Share on other sites More sharing options...
LukeDraisey! :) Posted March 25, 2006 Report Share Posted March 25, 2006 (edited) i was wondering about this, so can you bleed it with anything other than mineral oil that works well? Edited March 25, 2006 by LukeDraisey! :) Quote Link to comment Share on other sites More sharing options...
Bigman Posted March 25, 2006 Report Share Posted March 25, 2006 It realy depends on what brake u have...........I mean a magura disc could be bled with water as it is normaly bled with mineral oil, like the HS33 brakes where everybody runs water......Where as a hope, hayes etc could not be as they use dot4-5 oil which is completely different.BUT........It is not advisable to bleed a disc brake with water as the boiling point of water is much lower than that of an oil, and when using the brake to slow you down when stopping or riding down a hill for example there is aloit of heat build up on the rotor and pads, with oil it may expand slightly (what the open system is for) but with water it would just boil and bugger up all the internals of the brake.So bleeding a disc brake with water is NOT recomendedHope that helpedAdam Quote Link to comment Share on other sites More sharing options...
Dr. Nick Riviera Posted March 25, 2006 Report Share Posted March 25, 2006 you gays, everyone knows cable discs are better Quote Link to comment Share on other sites More sharing options...
Lee Cable Posted March 25, 2006 Report Share Posted March 25, 2006 you gays, everyone knows cable discs are better Or not, You cant of used a secently setup Hydraulic. My mates 6ti is awesome, for downhilling. But for nothing else. If anything is has to much power. On his kona stinky (front brake only) I can stop doing about 20mph, in about 2-5feet. Tis awesome. From Lee Quote Link to comment Share on other sites More sharing options...
nmt_oli Posted March 25, 2006 Report Share Posted March 25, 2006 It realy depends on what brake u have...........I mean a magura disc could be bled with water as it is normaly bled with mineral oil, like the HS33 brakes where everybody runs water......Where as a hope, hayes etc could not be as they use dot4-5 oil which is completely different.BUT........It is not advisable to bleed a disc brake with water as the boiling point of water is much lower than that of an oil, and when using the brake to slow you down when stopping or riding down a hill for example there is aloit of heat build up on the rotor and pads, with oil it may expand slightly (what the open system is for) but with water it would just boil and bugger up all the internals of the brake.So bleeding a disc brake with water is NOT recomendedAdamBigman here is right, this is what i put in a post a couple of days ago when someone asked about bleeding there maggie disk with water:Water can be DANGEROUS in a disk brake, as if you ever get it the slightest bit hot (and its surprisingly easy to do) the water will vapoourise (temporarily), this will leave you with no brakes, and possibly damage the system..The worst thing is how quickly this can happen- if your going down a hill with the brake on and it is getting hot, the water will not vapourise until you release the lever. This is because the pressure your are putting on the system prevents the water expanding into vapour, and hence the water heats up past its boiling point. As soon as you release the lever, pressure is reduced and you get vapour in the system leaving you with complete brake failure until the brake cools down- which will take a good 10 mins at least.Its really not that hard to find dot 5 brake fluid, just go into halfords/petrol station/garage/motor factors and buy some. It will be much better in the long run. Quote Link to comment Share on other sites More sharing options...
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