<VV> Dual Master Brake Cylinder Questions

[HallGrenn at aol.com]

Bob,
 
In my experience with dual systems--both using them since 1968 and  
repairing them--there was no difference in pedal feel unless one of the two  
circuits lost pressure and then the pedal dropped below it's normal  stopping 
point.  All the usual brake diagnostics apply--bad hoses, sticking  cylinders 
etc.  Be sure to center the two pistons in the master  cylinder.  Use a dual 
system checklist for sorting it out though.  Best of luck.
 
Bob
 
 
In a message dated 4/21/2013 1:28:22 P.M. Eastern Daylight Time,  
bgilbert at gilberts-bc.ca writes:

Hi,



I'm helping a friend get his 67 Monza on the  road. A PO replaced the stock
master cylinder with a dual setup. I don't  know anything about the setup
other than that and I've never had a Corvair  with a dual master cylinder
installed. All of the brakes work but I noticed  that when doing the
hard-harder brake test that the rear brakes lock up and  the fronts don't. 
It
doesn't feel right at all but I was wondering if that  is a "feature" of the
dual set up?



Also the brake pedal  feels very hard and there is almost no movement before
the brakes engage.  Again, is that a "feature" of this type of  setup?



Thanks,

Bob





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