A!! Posted July 4, 2006 Report Share Posted July 4, 2006 Whilst i was out on my bike in the heat wave we seem to be having at the moment i was wondering. What affect does the density of liquids used in maguras have on HS33's? I always thought that it was better to use a less dense fluid for maguras, thats why people bleed their HS33's with water as it's not very dense, so the pressure can be applied to the brake pad much quicker. Or is it better to use a dense fluid so the force can travel through the particles easier, as there are more particles in a specific area then there are in a less dense fluid. So what is the reason water is used in HS33's, and is it better to use a less dense liquid? Also does the temperature of the fluid affect braking performance? Like i say in really hot temperatures is there a fade in brake performance, or doesn't it really affect them? Quote Link to comment Share on other sites More sharing options...
squince Posted July 4, 2006 Report Share Posted July 4, 2006 Whilst i was out on my bike in the heat wave we seem to be having at the moment i was wondering. What affect does the density of liquids used in maguras have on HS33's? I always thought that it was better to use a less dense fluid for maguras, thats why people bleed their HS33's with water as it's not very dense, so the pressure can be applied to the brake pad much quicker. Or is it better to use a dense fluid so the force can travel through the particles easier, as there are more particles in a specific area then there are in a less dense fluid. So what is the reason water is used in HS33's, and is it better to use a less dense liquid? Also does the temperature of the fluid affect braking performance? Like i say in really hot temperatures is there a fade in brake performance, or doesn't it really affect them?I doubt the weather does much to the Liquid in the brake to be honest.The reason people use water is because it causes a hard feel to the brake lever and gets rid of lazy callipers making them return really quickly which is alot better for trials.the heat does however make my brake better, especially with plazmatic CRM pads because the heat softens the pad compound Quote Link to comment Share on other sites More sharing options...
Jaffacakes Posted July 4, 2006 Report Share Posted July 4, 2006 Are you using tar? If so it's probably melting. Quote Link to comment Share on other sites More sharing options...
Hicksy Posted July 4, 2006 Report Share Posted July 4, 2006 Are you using tar? If so it's probably melting.yh tar pain in the ass wen it melts on you rim lol Quote Link to comment Share on other sites More sharing options...
A!! Posted July 4, 2006 Author Report Share Posted July 4, 2006 No i don't use tar i haven't in a long time, as i can find any to use , although i've never really thought about tar melting and the brake pad compound becoming softer, i did notice my koxx browns seemed to squeak alot more in hot temperatures, i guess that is why I was just really wondering in general the affect that density and temperature of a fluid has on magura's. Quote Link to comment Share on other sites More sharing options...
BIG L Posted July 4, 2006 Report Share Posted July 4, 2006 When tar melts it gets well slippy. However back on the topic it seems that my brakes work better in the heat they seem sharper and quicker i think this is the heat thinning out the oil. Although on tyres the opposite happens the pressure increases due to molecules expanding in the heat and the rubber becomes softer and more grippy, whereas in the cold the molecules shrink so you have less pressure and the rubber is harder.I hope i have helped! Quote Link to comment Share on other sites More sharing options...
ned1 Posted July 4, 2006 Report Share Posted July 4, 2006 high heat makes water evaporate in brakes but you have to be reeeaaaaaallllllyyyyyyy dragging your brakes for this to happen and i dont think it can even happen int he magura rim brakes but i no it does in disc brakes Quote Link to comment Share on other sites More sharing options...
Chris Elson Posted July 4, 2006 Report Share Posted July 4, 2006 I use loads of tar on my rim , i paint it on lol hopefully getting koxx blocks soon and i wont have to put as much tar on. Oh and what colour pads are the best for summer then. Brown i think.Thanks Quote Link to comment Share on other sites More sharing options...
ned1 Posted July 4, 2006 Report Share Posted July 4, 2006 im gerin some blues because they dont wear out your grind yet still last yonks! Quote Link to comment Share on other sites More sharing options...
Thurston Posted July 5, 2006 Report Share Posted July 5, 2006 Blues have a soft compound, therefore were doen on your grind alot fasterBrowns are the best on a grind Quote Link to comment Share on other sites More sharing options...
N.Wood Posted July 5, 2006 Report Share Posted July 5, 2006 high heat makes water evaporate in brakes but you have to be reeeaaaaaallllllyyyyyyy dragging your brakes for this to happen and i dont think it can even happen int he magura rim brakes but i no it does in disc brakes Water can't evaporate in a closed system, i.e a Magura. So yeh Quote Link to comment Share on other sites More sharing options...
ben Posted July 8, 2006 Report Share Posted July 8, 2006 water wont go much thinner when its hot but when it freezes thats the problem the heat means your pads often have a better hold and i know this is being silly but i think you me the viscosity of the liquid as thats how runny it is but yes as liquids heat up they become less dense as there taking up less area sorry i knew what you meant and i'm just being a fool Quote Link to comment Share on other sites More sharing options...
Dan-Gadd Posted July 8, 2006 Report Share Posted July 8, 2006 I had water in my old magura race line d's and in the winter they froze up! also the water can evaporate in the summer and this just makes you brake feel horrible and your lever go all flimsy (not good) use maggie oil. If your looking for some tar you can get it off ebay, just search trials tar.Dan Quote Link to comment Share on other sites More sharing options...
Egg Fried Rice Posted July 8, 2006 Report Share Posted July 8, 2006 I had water in my old magura race line d's and in the winter they froze up! also the water can evaporate in the summer and this just makes you brake feel horrible and your lever go all flimsy (not good) use maggie oil. If your looking for some tar you can get it off ebay, just search trials tar.Danwater from maguras cant evaporate! water cannot evaporate from closed systems like a magura.JK Quote Link to comment Share on other sites More sharing options...
Dan-Gadd Posted July 9, 2006 Report Share Posted July 9, 2006 Thats probably true, i'll take that statement back Nevertheless i wouldnt use water. 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.