Quote:
Originally Posted by sharky nrk
ok so one more shot with actual maths
using yamaha setup as a base setup. Two sets of calipers, 27mm and 30mm pistons in calipers, 16mm radial master. 5115.06 mm^2 piston area in caliper, 200.96 mm^2 piston area in master. A 25.45 to 1 ratio
single ducati caliper, 30mm and 34mm pistions, total caliper piston area 3227.92 mm^2, for the same 25.45 to 1 ratio you would need 126.82 mm^2 master piston area. This would be a 12.7mm master cylinder piston. Not a normal size but damn close to a 1/2 inch master which is readily available.
Go up if you want firmer lever with less travel but likely harder to modulate. Go down if you want more travel at the lever with less firm bite.
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There also the lever throw ratio. The farther the plunger is from the pivot point of your lever will also give the feel of a larger MC because you'll have less leverage. So if you have a 16mm MC with 20mm distance from plunger to pivot point and another 16mm MC with a 16mm plunger to pivot point distance the second with have the feel of say a 13-14mm MC with 20mm pivot point spacing.
It's for these many factors that I tried three MC before landing on one that worked.