This video is primarily directed towards my firstyear students attending Brakes class where we take an indepth look at a quick takeup master cylinder design with incorporated pressure differential and proportioning valves.

This video is relatively long, but includes a lot of helpful information that can help you understand some of the basics behind master cylinders as well as some possible problems that can arise.

Chapters:
0:00 Intro/Basic Operation
8:44 Compensating (vent) and Inlet (replenishing) Ports
24:17 Quick TakeUp (stepbore) Master Cylinder Operation
30:04 Proportioning Valves (brief)
31:19 Pressure Differential Valve
36:11 Pressure Differential Switch
38:10 Schematic Overview