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Technical Catastrophic brake issue.

Discussion in 'The Hokey Ass Message Board' started by Al T, Sep 4, 2015.

  1. 57JoeFoMoPar
    Joined: Sep 14, 2004
    Posts: 4,281

    57JoeFoMoPar
    Member

    You're right, but depending on what master you use, it could have an internal bias that is already setup for the disc/drum setup
     
  2. RHRH3P
    Joined: Mar 7, 2007
    Posts: 136

    RHRH3P
    ALLIANCE MEMBER

    I appreciate the lesson learned. Dad and I were driving his 56 Victoria today and discussing how to make his brakes better. His drums stop but it's quite the effort. It's converted to dual but I'm thinking disk on the front like my 56 is in order. It's next on the list.
     
  3. Kevinsrodshop
    Joined: Aug 22, 2009
    Posts: 589

    Kevinsrodshop
    Member

    Is there any way to tell if a master has that?
     
  4. The bias comes from the proportioning valve (in a stock factory system). Some masters do have built-in residual valving, if that's what you were thinking of. I like to use a separate PV in any disc conversion that I do, a throw back to my stock car days.
     
  5. V8 Bob
    Joined: Feb 6, 2007
    Posts: 2,484

    V8 Bob
    ALLIANCE MEMBER


    There are no internal pressure limiting valves in a dual master- any proportioning and metering are always external. Residual check valves, as stated earlier, were internal, and on all drum brake masters up till the mid '70s.
    There are differences in fluid volume or displacement in dual master cylinders, resulting from the different pri./sec. piston strokes in most.
     
  6. olscrounger
    Joined: Feb 23, 2008
    Posts: 3,504

    olscrounger
    ALLIANCE MEMBER

    Many great comments here. It is imperative to check the brake system frequently no matter what the system is.
    The emergency brake also needs to be checked often and kept in adjustment which many overlook or take for granted. I even see cars built without a working ebrake!! Mine are always checked and I have had to use them over the years when brake problems occurred.
     
    wraymen likes this.
  7. It's simply amazing.
    Pythonesque logic being relied upon for braking systems.
     
  8. Glad you're reading this Shoes. As I began reading it, I instantly thot of your situation. It makes me even happier that your situation was corrected.:)
     
    wraymen and worn shoes like this.
  9. worn shoes
    Joined: Mar 16, 2007
    Posts: 310

    worn shoes
    Member

    That's why I didn't drive the car. No reason to put yourself or the public at risk. Thanks again Bowtie Coupe!
     
    Bowtie Coupe likes this.
  10. Lucky Steve
    Joined: Dec 20, 2009
    Posts: 53

    Lucky Steve
    Member
    from Brighton

    volvobrynk and wraymen like this.
  11. "and now for something completely different" "spam,spam,spam,egg and spam"
     
  12. V8 Bob
    Joined: Feb 6, 2007
    Posts: 2,484

    V8 Bob
    ALLIANCE MEMBER

     
  13. Lucky Steve
    Joined: Dec 20, 2009
    Posts: 53

    Lucky Steve
    Member
    from Brighton

    Hey Bob, those are very good points- I thought long and hard about swapping to dual master but as that's a Kurtis built chassis I didn't want to cut any of his work away!
    The float isn't that big in relation to the master cylinder and I think the clue is in the name- it 'floats' above the fluid and doesn't displace anything but air! I checked compatibility and also check it regularly to ensure it's still working. It's been in there 2-years now and so far so good.
     
    volvobrynk likes this.

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