Two types of the single res MC, Mark.
Drum brakes used 7/8" bore, later types
used 3/4" which gave greater hydromechanical advantage ("softer" pedal or less
effort).
I am currently using the early 7/8" bore with disc conversion. Which means you
have
to press harder for same effectiveness you
would get with a 3/4".
However, very "doable" and no problems with braking. If anything, the 7/8"
provides
a greater cushion to "lockup" in a panic
stop situation....but IMHO this is a good thing considering "locked" wheels
make for longer distances traveled without the benefit of directional control.
There is about a 1/2" difference in pushrod
lengths I believe, between the two, the 3/4"
application being longer.
Frank Clarici or one of the other more "knowledgeables" can comment on the
effects of this difference, as I believe Frank has interchangeably used both MC
in his Bugeyes/Spridgets from time to time.
Cap'n. Bob '60 :{)
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