The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 47-59 What master cylinder and proportioning valve for disc/disc

1project2many · 05-20-2020, 04:29 PM

For safest braking you should provide more stopping power at front wheels than rear. Brake master cylinder size should be selected based on braking torque generated at front and rear axles. Braking torque is a function of system pressure, rotor diameter, pad coefficient of friction, surface area of caliper piston(s), tire contact patch, weight distribution, weight transfer, and surface area of master cylinder piston. Homebrew guys rarely have the means to determine weight transfer or coefficient of friction but we can determine rotor diameter and caliper surface area as well as weight bias and tire contact patch. Without doing some napkin calculations at a minimum all you are doing is guessing imo.

I would say calling the pros is a good idea.

05-20-2020, 04:29 PM	#16
1project2many Registered User Join Date: Mar 2012 Location: Lakes Region NH Posts: 3,158	Re: What master cylinder and proportioning valve for disc/disc For safest braking you should provide more stopping power at front wheels than rear. Brake master cylinder size should be selected based on braking torque generated at front and rear axles. Braking torque is a function of system pressure, rotor diameter, pad coefficient of friction, surface area of caliper piston(s), tire contact patch, weight distribution, weight transfer, and surface area of master cylinder piston. Homebrew guys rarely have the means to determine weight transfer or coefficient of friction but we can determine rotor diameter and caliper surface area as well as weight bias and tire contact patch. Without doing some napkin calculations at a minimum all you are doing is guessing imo. I would say calling the pros is a good idea.