B flat 7th?, Maj Or minor?
what is the difference between BB7 road and BB7 mountain?
NB, SRAM has a parts breakdown .. See: in the caliper is a crown like ring with a series of ramps , in the edge.
that is what turns the rotation of the arm into the sideways motion that moves the brake pad to the disc.
the slope of the ramp is steeper to move the pad further , for the shorter swing of the road , short cable pull.