slob said:nah its not air...unless you have a seperate system for each wheel
The pressure in the system wil remain the same when you depress the brake pedal regardless of air, the air will compress, resulting in more pedal travel, but you can't have a sealed system with more pressure in one bit than the other.l3on said:Why on earth could it not be air? provided all pipes only ever went up i would agree with u, but they never do and air will reach the top of an inverted u in the pipe and stay there until bled, ergo less braking pressure to any 1 wheel!
someoneelse has already answered this but just incase you missed it. pressure in a hydraulic system will be constant in every part of the system. which is why it can't be air. the air will compress which is why when you have air in the systelm if you pump yer pedal it will get harder. this is due to the air being compress as much as possible. because fluid don't compress when you push the pedal what you are doing is pushing the fluid away from the master cylinder to the wheel cylinders/calipers. if you have a perfect system all brakes will work as one. if you have a sticky caliper then that one will not work until you have produced enough pressure to overcome the stickyness of it, if at all. having said all that it is possible to have both at the same time ...air and a sticky cylinder also different tread patterns will affect brakes as much as anything.l3on said:Why on earth could it not be air? provided all pipes only ever went up i would agree with u, but they never do and air will reach the top of an inverted u in the pipe and stay there until bled, ergo less braking pressure to any 1 wheel!