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Old 02-02-2011, 11:05 PM   #21
michaudracing
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Join Date: Nov 2008
Location: Atlanta, GA
Posts: 5
Re: disk vs drum pedal effort

My experience seems to be a little different. Maybe my original drum brakes weren't up to spec. I have factory '76 half ton calipers and manual master cylinder. I still have the original '63 rear drums. After installing carbon/metallic pads and drilled rotors, I need less pedal effort to stop as compared to the drum/drum setup. I have worked on several cars with mismatched custom combinations, and it's always been difficult to dial the system in. M/C bore and stroke, brake pedal geometry, rear brake type, booster type, and the brakes themselves (rotor type/diameter, caliper volume, pad compound and surface area) will all affect pedal effort. I believe it's possible to get a manual disc system with drum-like pedal effort. It may take a lot of tinkering. I've used brake pressure guages to actually get numbers on what the changes do.

-Steve


-Steve
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