After reading through the brake caliper thread over in the FC area, I have a question on one of our rules and the reasoning behind it. Here is the section:
H.10. Brakes
Unrestricted, except:A. All pistons in a given caliper must be of the same size. Calipers must be ferrous or aluminum alloy.
B. Brake rotors are restricted to ferrous material.
The FC rules just require Ferrous calipers as far as I can see. The FF rules require cast iron calipers. FB has more flexibility on material, but why the requirement for same size pistons
Thanks.