Quote:
Originally Posted by Frank Lee
Actually the piston seal is supposed to deform upon application then retract the piston a small amount upon release. But oftentimes it just doesn't seem to have enough oomph to really do the job.
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Doesn't this suggest that there is an actual maintenence issue to be dealt with and replace the seals if they are not performing their role properly.
Quote:
Originally Posted by Frank Lee
Did you look at these springs? They are far too puny to ever come anywhere near fully retracting the piston. Look at them. They are nothing more than a little helping hand for that seal.
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Yes I did read the thread fully and saw pictures of the springs, but this doesn't actually indicate how much tension is applied.
The whole thing really needs someone to go out and do some proper testing on both pro's & con's, not that hard to do.
1/ A series of coast down tests with and without springs should clearly show if they reduce rolling resistance significantly.
2/ Controlled braking tests, drive a controlled route with minimal use of brakes and plenty of vibration to free up pads to their maximum opening, then assess emergency stop on safe straight section by checking stopping distance from set marker.
Maybe atleast some attempt to assess merit.