Originally Posted by UnseenMenace
Shame that I missed the opportunity to learn something, but you do find that people with incredible knowledge, rarely make mistakes or get misinformed.. perhaps they fail to see that others are less perfect, maybe it explains why these people react as they do
maybe it does
However if you still want to believe that your foot pressing a pedal and a servo creating a pressure of about 1/5th of what the hose is actually rated to (well in excess of 3000psi) will make it expand then maybe we should leave it there.
But you are correct some people often do report a more spongy pedal feel, this however is caused by the larger bore pipe creating a greater volume of fluid in the system. This larger volume has to be shifted further so to do it the pedal has to travel more. In race applications we counteract this by changing the master cylinder size to compensate
So how when I only change the small front lines do I get a better pedal feel is often the next question.
Well the same principal applys, in that you have removed a relativly large bore old worn flexible rubber hose, and replaced it with a smaller bore fresh line. This smaller bore carrys the pressure better so the pressure/torque balance is increased slightly and the pressure/volume decreased slightly
Hope that somehow explains my comment above mate, and sorry you got upset