Quote:
Originally posted by Twinfan
Hmmm. I still don't think it's "right". A design feature it may be, but it shouldn't be there in my opinion. I wonder if this 'feature' contributed to the fault with my brakes... |
You can't get rid of it easily, the stiffer the fork and the more true the rotor the less the rotor knocks the pads back so its just the deflection of the piston seal rubber returning the pads. Wobble the rotor agaisnt pads on a paddock stand and it'll spin freely as theres nothing preventing the pads going back. When you are riding the twist in forks and wheel axle can do just that although on modern bikes everything is stiffer and less likely to flex.
All that can grab a brake is pads not retuning because seal rubber isn't correct, ,something blocking the return of fluid ( you'd notice it as you apply brakes as lever would feel hard or not move at all) or the pad actually stuck in the caliper becasue of dirt or grit in which case it would wear pad and heat rotor up, it would take a lot of heat to presurise whole system enough so that fluid expands to drag brake to a point where it locked.
in the Ducati 999 book by Alan Cathcart theres a small section on the design of the brakes/master cylinder where Tierblanche says he wanted a lower/flatter master cylinder to get into the fairing he'd designed, the whole system was modelled up in 3D cad before any parts were made. Not sure if the caliper design was anything different to brembo's normal OEM range but the master cylinder was totally new although that could just be the resevoir bit.