pogo Posted February 16, 2012 Report Share Posted February 16, 2012 mercury......just sayin The stuff that is used in thin glass tubes that expands and contracts at different temperatures Quote Link to comment Share on other sites More sharing options...
Ali C Posted February 16, 2012 Report Share Posted February 16, 2012 but it's low viscosity so it must be better than water which everyone knows is too hard to pull. Quote Link to comment Share on other sites More sharing options...
Mark W Posted February 16, 2012 Report Share Posted February 16, 2012 Related: If you don't add anti-freeze to your water bleed, you're doing it wrong. Quote Link to comment Share on other sites More sharing options...
JD™ Posted February 16, 2012 Report Share Posted February 16, 2012 but it's low viscosity so it must be better than water which everyone knows is too hard to pull. I believe Mercury actually has a slightly higher viscosity than water at a room temperature, but it's years since any Science class of mine Quote Link to comment Share on other sites More sharing options...
Ali C Posted February 16, 2012 Report Share Posted February 16, 2012 I'm no scientist but.... I thought the way mercury rolls about not sticking to anything meant that it had a lower viscosity? Water is like treacle, it sticks to surfaces. Meh, I was just messing about anyway I have however contacted my brother who has a PHD in chemistry to get an answer and perhaps a suggestion on what fluid anal trials riders could use. Edit: Dam you JD, you were correct! People should try Acetone, it's a solvent but I'm sure it will be fine Edit 2: Acetone is present in urine, so everybody should use piss in their brakes 1 Quote Link to comment Share on other sites More sharing options...
aener Posted February 16, 2012 Report Share Posted February 16, 2012 (edited) Meh. Why don't we just coat the inside of brake hoses with a layer of hydrophobic paint, if we're getting in to this seriously? Edit: As well as the inside of the cylinders and the pistons. Edited February 16, 2012 by aener Quote Link to comment Share on other sites More sharing options...
staryarm69 Posted February 16, 2012 Author Report Share Posted February 16, 2012 think this is getting a bit far now lol if its dot il not be trying it i have an old maggy but its better as spares then wracked, aparently the tank fluid is harder then water but moves just as freely so should give the lever a harder more solid feel and be just as fast and easy to pull, but the main thing will be if its dot or not which i didnt think about to start with but im thinkin it will most likly be dot Quote Link to comment Share on other sites More sharing options...
JD™ Posted February 16, 2012 Report Share Posted February 16, 2012 You've already been told that a 'harder' (assuming by that you mean less compressive) fluid won't make any difference at our brake pressures: For the pressures involved in trials both fluids can be considered incompressable Liquid is pretty compression-less (note pretty, not entirely), water, oil etc is VERY hard to compress, I doubt tank fluid is any "harder" than water If anything, as already said too, you'd need something THINNER than water, not thicker. Any improvement you feel will be due to you wanting it to feel better. I should mention I couldn't give a rats arse, I just hate it when people ignore facts they've been presented with.. Quote Link to comment Share on other sites More sharing options...
Ali C Posted February 16, 2012 Report Share Posted February 16, 2012 weird acoustics in here, I swear I can hear an echo.... Quote Link to comment Share on other sites More sharing options...
JD™ Posted February 16, 2012 Report Share Posted February 16, 2012 echo echo echo echo echo Quote Link to comment Share on other sites More sharing options...
Ali C Posted February 16, 2012 Report Share Posted February 16, 2012 echo echo echo echo echo 1 Quote Link to comment Share on other sites More sharing options...
JD™ Posted February 16, 2012 Report Share Posted February 16, 2012 (edited) EDIT: Damn you TF for not allowing resizing images Edited February 16, 2012 by JD™ Quote Link to comment Share on other sites More sharing options...
staryarm69 Posted February 16, 2012 Author Report Share Posted February 16, 2012 i hear whats been said but a harder fluid that moves freely will give the feeling of less flex/sponginess at the lever. i dunno about most riders but the more solid my lever feels the the more i like it. each to there own i was only interested in peoples thoughts and if people have tried other fluids and weather they work. Quote Link to comment Share on other sites More sharing options...
JD™ Posted February 16, 2012 Report Share Posted February 16, 2012 echo echo echo echo echo Quote Link to comment Share on other sites More sharing options...
Revolver Posted February 16, 2012 Report Share Posted February 16, 2012 i dunno about most riders but the more solid my lever feels the the more i like it. Try fitting a tensile 4 bolt booster then. Quote Link to comment Share on other sites More sharing options...
haydon_peter Posted February 16, 2012 Report Share Posted February 16, 2012 Frozen water is a harder fluid, that moves really freely in a hose/lever Quote Link to comment Share on other sites More sharing options...
Revolver Posted February 16, 2012 Report Share Posted February 16, 2012 Cheater! Quote Link to comment Share on other sites More sharing options...
staryarm69 Posted February 16, 2012 Author Report Share Posted February 16, 2012 iv got a echo 4 bolt booster already, sorry for trying to find a small improvement in a sport we all do Quote Link to comment Share on other sites More sharing options...
Azarathal Posted February 16, 2012 Report Share Posted February 16, 2012 I found the trialtech 2bolt to be a f**ktonne stiffer than the Echo 4bolt Quote Link to comment Share on other sites More sharing options...
Ali C Posted February 16, 2012 Report Share Posted February 16, 2012 iv got a echo 4 bolt booster already, sorry for trying to find a small improvement in a sport we all do sorry, we're not really having a go at you, it's just most of us have been riding a long time and been through countless "what's the best fluid" posts in our time on here so it's hard not to be a little cynical. I'm still curious as to what you mean by "harder"? As has been said water and oil are pretty compression-less yet I wouldn't describe them as hard. Finding a stiffer frame/booster setup would make more difference to how stiff the brake feels than the fluid that's in it. Personally I find a REALLY stiff setup makes my arm pump worse, a little bit of flex can be a good thing. 1 Quote Link to comment Share on other sites More sharing options...
Azarathal Posted February 16, 2012 Report Share Posted February 16, 2012 I agree with the "too stiff" bit of that post, I'm too thick to pass judgement on the rest though. 04 maggy lever with a trialtech 2bolt booster is too stiff for me, need to get some flex in there somehow. Quote Link to comment Share on other sites More sharing options...
staryarm69 Posted February 16, 2012 Author Report Share Posted February 16, 2012 sorry, we're not really having a go at you, it's just most of us have been riding a long time and been through countless "what's the best fluid" posts in our time on here so it's hard not to be a little cynical. I'm still curious as to what you mean by "harder"? As has been said water and oil are pretty compression-less yet I wouldn't describe them as hard. Finding a stiffer frame/booster setup would make more difference to how stiff the brake feels than the fluid that's in it. Personally I find a REALLY stiff setup makes my arm pump worse, a little bit of flex can be a good thing. cheers, its awkward to explain as i know what i mean lol, by harder/denser i mean that if u had a can with a air tight plate on the top one with water one with tank fluid the plate on the water cud be pushed down feather then the tank fluid but the tank fluid moves just as fast and freely as water. think im going to do some syringe tests when i get it but it all boils down to the dot or not factor iv only tried 2 boosters a gu 4 bolt and my current echo. my set up feels pretty amazing and best iv ever used and a everyone thats tried it agrees but im not saying there not better ones out there. Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted February 16, 2012 Report Share Posted February 16, 2012 by harder/denser i mean that if u had a can with a air tight plate on the top one with water one with tank fluid the plate on the water cud be pushed down feather then the tank fluid but the tank fluid moves just as fast and freely as water. Right... well that's cleared that up. Except that what you're talking about is compressibility and the majority of fluids which can be used in brakes can be effectively considered as incompressible at standard atmospheric temperature and pressure. Why do you think that tank brake fluid is any different? My guess is that the army just buy DOT fluid in bulk from a supplier with the main difference being that it comes in a khaki 50 litre drum. 1 Quote Link to comment Share on other sites More sharing options...
staryarm69 Posted February 16, 2012 Author Report Share Posted February 16, 2012 Right... well that's cleared that up. Except that what you're talking about is compressibility and the majority of fluids which can be used in brakes can be effectively considered as incompressible at standard atmospheric temperature and pressure. Why do you think that tank brake fluid is any different? My guess is that the army just buy DOT fluid in bulk from a supplier with the main difference being that it comes in a khaki 50 litre drum. cheers, for the first part anyway. it was just a thought i had that it would be worth trying just like the first person to run water. im not sure is its dot or not as iv said already but its vary different to normal fluid as it moves as fast and freely as water as iv already said. i think in future i will just try thing for my self as the topic has proved to be hard work but thanks to those have help Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted February 16, 2012 Report Share Posted February 16, 2012 cheers, for the first part anyway. The second part was a serious question as well (though a bit sarcastically written). Apart from you telling us it's harder do you have any data to back up that it is anything other than DOT fluid? Quote Link to comment Share on other sites More sharing options...
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