jiri

Yes. But I want to say that the intention of that comment was not to persuade others to do the same thing. Just wanted to show that the other liquid in a brake doesn´t mean an immediate disaster. Personally, I am still worried about the seals, still checking all potential signs of demage, but after months there aren´t any. Magura mineral oil can damage the Dot seals in a few hours (experienced that). How long can it take to water? I will see.

Last summer, I hit the brake (hope mono) when I was riding and some oil spilled out. I used orange lemonade to fill it again. There was nothing better around. I was lazy to bleed the brake properly afterwards, so the orange lemonade stayed there for about two months. No damage happend. Now I am using water and it seems ok. However antifreeze is necessary in the winter. Don´t trust people who say that water is evil. They drink it every day and are still among us:lol:

If the brakes fall apart, you will be the first one to know

Good point. I don´t mind water leaking out of the breake, it is harmless. Eco-maniacs love me Thanks for comment.

Have you got any personal experience with that? I admit, that using water in discs might cause problems when overheated but on the other side, this is not case of trials riding. Anyway, I wouldn´t recomend using water in discs to anyone who is happy with oil. I just wanted to show that there is also an alternative. Good setting of brakes is in the first place of course.

"Bigger rotor...more leverage round hub, more bite and hold. Smaller rotor...the opposite" Bigger rotor gives you only more leverage. Bite and hold is given by the size of surface where pads touches the rotor. Some rotors are made to fit exactly the size of pads and in some cases the contact surface of 160s is bigger than 180s used with inapropriate brake. It depends. For example if you run Avid rotor with Hope mono trial you won´t get the best of it because the surface of pads is larger then rotor. The same if you run Hope trial rotor with Avid brake, but in this case pads won´t cover all the surface of rotor. Good drilling is also importat because it helps to mantain braking power by cleaning the pads. What matters the most is of course the brake itself. Good disc brake is efficient even with the poor rotor. I use Hope mono mini on both wheels and it´s great. Now I am trying them filled with water. Not to improve a lever feel, because Hopes work perfectly, but to reduce micro-leaking which gradually attracts dirt and decreases braking performance.