Dennis Detweiler Posted September 4, 2019 Report Share Posted September 4, 2019 When I bleed my brakes and open each bleeder separately in sequence, my pedal goes to the floor. So, how does the front brakes stop the car if a rear line springs a leak and visa versa? Quote Link to comment Share on other sites More sharing options...
dhrandy Posted September 4, 2019 Report Share Posted September 4, 2019 (edited) Yes, dual master is safer. To answer your question, nothing. I replaced my leaky single reservoir master cylinder with another one. I started down the road and had no brakes, pulled into a parking lot and called my wife to bring me some brake fluid. I have an emergency brake that works, so I was able to stop. I also replaced the rubber lines. As long as you check your fluid regularly you should be OK. Usually if it leaks, its slow. If you have a puddle, then it's fast. Edited September 4, 2019 by dhrandy Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted September 4, 2019 Report Share Posted September 4, 2019 while the dual reservoir master is safer it is not an end all to brake problems when used alone. You should install a combination valve...(differential valve)...this device will serve as hold off on the front while the rear engages then allow front pressure and equalization....if a line fails from there the pressure of the other side will force a piston to close flow to the fault side and allow the built in electrical switch now go to ground and illuminate a warning light placed on the dash....in disc front, rear drum...the average joe will not know he has a rear problem till he sees a puddle...or in the case of most late model dual piston masters but single fed reservoir...loss of fluid and the eventual reduction of force applied to the front...all this time however...you have been ignoring that little red light on the dash...so even with this...many people just don't maintain as they should.. Quote Link to comment Share on other sites More sharing options...
Los_Control Posted September 4, 2019 Report Share Posted September 4, 2019 20 minutes ago, Plymouthy Adams said: all this time however...you have been ignoring that little red light on the dash Is even more annoying when it flashes at you PA knows I am currently working on my brakes for that exact reason Quote Link to comment Share on other sites More sharing options...
Dennis Detweiler Posted September 4, 2019 Author Report Share Posted September 4, 2019 I can lock up the rear wheels when I pull the hand brake. The old brake strap around the driveshaft on my 39 works very good. 2 Quote Link to comment Share on other sites More sharing options...
keithb7 Posted September 5, 2019 Report Share Posted September 5, 2019 (edited) An e-brake properly maintained, regular monitoring of brake fluid, low gear hold back, and multiple planned possible emergency crash routes, allow me to drive down a steep winding hill every time I take my old car out. I’m still running the stock single chamber master cylinder. I adjust my brakes. I pull my 4 drums probably 4 times minimum, every cruising season. Do I need a dual master? It might offer more reassurance. Maybe some day. For now I’m comfortable and feel that my brakes are adequate. Edited September 5, 2019 by keithb7 Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted September 5, 2019 Report Share Posted September 5, 2019 Not a warm cozy safe feeling when a dual MC reservoir system fails 1 Quote Link to comment Share on other sites More sharing options...
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