Vicious brakes
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Thread: Vicious brakes

  1. #1
    Official RnS Addict russ6120's Avatar
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    Vicious brakes

    Got a problem with my brakes....they are too good!
    After ****ing around trying to repair/service them I gave up and bought new wheel cylinders (drums all round) and dumped the underfloor master cylinder and fitted a new one and a pedal


    The problem I have now is that they are too good. I only need to touch the pedal and they are on. Can I just back the brakes off to allow more fluid to be pumped or is something else going on?

    At some point when I can find the bits I’ll convert the front to discs

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    Stroker Kustom Jim's Avatar
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    My old drums all round Consul never had a servo!?
    "We should take comfort that while we may have more still to endure, better days will return: we will be with our friends again; we will be with our families again; we will meet again."

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    Official RnS Addict mygasser's Avatar
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    try blocking off the servo pipe russ. also what is the pedal ratio with the new setup? manual will be about 6:1 and servo will be about 4:1. if you have a manual pedal ratio with a servo fitted they'll be 'really, really' good.
    neil.
    need a job done on your project? i may be able to help.

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  6. #4
    Off the Xmas card list kapri's Avatar
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    Drum brakes don't like servos . Had a Rover servo on my drum braked 100E would stop the wheels DEAD at 60mph ...not so much the tyres.

    Backing the brakes off a tad wil give you a bit of inline reservoir of unmoved fluid but once passed a cerain point they will be come vicious again.

    Discs will fix it fully.


    EDIT Plus what Neil said !! Just blanking the servo vacuum will fix it.

  7. #5
    Official RnS Addict russ6120's Avatar
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    Cheers chaps. I’ll disconnect the servo and see how that is....and maybe back the brakes off a little. I fitted discs to the panel van but that came as a home made kit. I wouldn’t know where to get the bits to make some for the Pontiac

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    If you recently fitted new rear brake shoes you may need to file the leading edge slightly to stop it grabbing

  9. #7
    My name is Martin 30psi's Avatar
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    Quote Originally Posted by NMNeil View Post
    If you recently fitted new rear brake shoes you may need to file the leading edge slightly to stop it grabbing
    Yeah and check the primary/secondary shoes are round the right way and you have correct shoe to drum clearance.
    '62 Ford Thunderbird
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