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  1. #1
    Senior Member neondave's Avatar
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    1971 Raleigh Sports brake caliper upgrade ?

    Been having a bit of a problem with the rear caliper . It flexes too much and the pad holders contact the frame. I bent the arms back and its ok for now, but I'm sure it will do it again. Too much grip with the Koolstop pads maybe ?

    Is there a stronger drop in replacement for the originals ? I was trying to keep as factory as possible , but brakes are important


    Thanks for any suggestions , Dave

  2. #2
    gna
    gna is offline
    Count Orlok Member gna's Avatar
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    I put Tektro 800A on both my bike and my wife's. Took a bit of jiggling, but they fit in just fine.

    Our Raleigh Sports have slowly modernized--CR18 rims, KoolStop Pads, Tektro 800A brakes. All to stop quicker.
    Quote Originally Posted by shipwreck View Post
    Sure it works in practice, but will it work in theory.

  3. #3
    Senior Member neondave's Avatar
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    Quote Originally Posted by gna View Post
    I put Tektro 800A on both my bike and my wife's. Took a bit of jiggling, but they fit in just fine.

    Our Raleigh Sports have slowly modernized--CR18 rims, KoolStop Pads, Tektro 800A brakes. All to stop quicker.
    The Tektro looks good. Do the original cables work with them ? Less flex than your old calipers ? I still have the steel rims , but the koolstop does a good job, when it's dry anyway.

    I read about placing the caliper ahead of the seat stay , it should work ?, I dunno......

  4. #4
    Senior Member Narhay's Avatar
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    Does the caliper have any back and forth play? The center bolt could be too loose.

  5. #5
    gna
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    Count Orlok Member gna's Avatar
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    Quote Originally Posted by neondave View Post
    The Tektro looks good. Do the original cables work with them ? Less flex than your old calipers ?
    Yes and yes. Also easier to adjust.
    I still have the steel rims , but the koolstop does a good job, when it's dry anyway.
    You may get some squealing...

    I read about placing the caliper ahead of the seat stay , it should work ?, I dunno......
    Dunno about that...
    Quote Originally Posted by shipwreck View Post
    Sure it works in practice, but will it work in theory.

  6. #6
    Senior Member neondave's Avatar
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    Quote Originally Posted by Narhay View Post
    Does the caliper have any back and forth play? The center bolt could be too loose.

    I re checked that bolt , it was snug but could have been tighter, so I cranked on it a bit . Between that and bending the arms a bit it seems ok for now.

    Time will tell .

  7. #7
    Senior Member markk900's Avatar
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    The original rear pad holders on both my 49 Humber and my wife's 56 standard have tabs that are clearly intended to hit the seat stays and stop at that point......I think this is "state of the art" for back then.....flex was expected.

  8. #8
    Senior Member neondave's Avatar
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    Quote Originally Posted by markk900 View Post
    The original rear pad holders on both my 49 Humber and my wife's 56 standard have tabs that are clearly intended to hit the seat stays and stop at that point......I think this is "state of the art" for back then.....flex was expected.
    I was lookin' around saw this Some Vintage Brake Parts from Yellow Jersey Raleigh Modolo DiaCompe Zeus Campagnolo Mafac And the shoe with the strip of leather through it , wonder how well they work

  9. #9
    Can'tre Member 3alarmer's Avatar
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    .
    ...I have routinely changed these originals out for used Dia Compe alloy caliper brakes in the appropriate reach on just about every Raleigh Sports I've ever owned and ridden.

    Find a source like a bike co-op or someplace or someone who has a parts bin for reworking olde bicycles. Otherwise, I guess e-bay or online, but they will be more expensive that way.
    Quote Originally Posted by CKey_Cal View Post
    Facts are binary. If they aren't, then they aren't facts.

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