Monarch springer fork and drum brake

Discussion in 'Motorized Bicycle General Discussion' started by Kevron99, Oct 21, 2009.

  1. azbill

    azbill Active Member

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    I have run the arm on either side :)
    when I first got my hub laced up (4 yrs ago), I called Sturmey-Archer, and the tech told me it didn't matter which way the hub was oriented ;)
     
  2. sportscarpat

    sportscarpat Bonneville Bomber the Salt Flat record breaker

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    I have done this many times. Using the Worksman style drum I run the torque arm for the drum on the front right fork tube. I tig weld a small roundbar standoff to the inside of the fork tube. The torque arm slot then slips over this tab and keeps the arm from rotating. I also find the drum only fit in this relationship, that is to say the cable and torque arm only fit on the right side of the fork.
    Pat
     
  3. michaelchism69

    michaelchism69 New Member

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    What kind of engine is that?
     
  4. Dan

    Dan Staff
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    LOL, almost 4 hrs later. I rode to DMV's MC test thing to get an exact footage of stopping before swapping it around. (from RT to LFT) Came home and took off wheel. Realized why I had to put it on the RT. Needs to be drilled and ground out to allow being on the LFT side. I marked it off then decided to check inside for any wear or maint. needs. The lever just arm only opens a "C" so put it back the way it was. Ubolt and all. (but in my defense, I did put some electrical tape on to protect the forks paint)

    1st pic, just the hub, marked where to be altered.
    2nd, brake not engaged.
    3rd, brake on and held open with a twist-tie.

    Now gonna go ride her. .shft.
     

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  5. Board Track Racer

    Board Track Racer New Member

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  6. msrfan

    msrfan Active Member

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    That's what I did to the Panama Jack project. Very clean and bullet proof. Makes wheel removal so much easier than with a clamp.
     
  7. corgi1

    corgi1 New Member

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    My apoligies,after seeing the inside workings of the brake ,I concure that it will operate the same on either side,possible a more aggersive brake lever would travel further ,but offer stronger pull on the shoe lever(kinda' like a larger rear sproket causes more power to the rear wheel,,a small increase makes a big difference)
     
  8. thimmaker

    thimmaker New Member

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    It wouldn't be to hard to switch the srings over to the large single spring used on the Monark Supertwin. Just change the top spring mount to one from the Supertwin and add the single post front fork section or weld a single post to the existing front fork. The parts show up once in a while on e-bay.
    Geo.
     
  9. Dan

    Dan Staff
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    Thought about it a bunch today Corgi. I think it may have some effect. Would be a much less passive contact if the "clam" opened into the on-coming drum. More of a positive contact. I dunno if it would be so much more it would matter much but in the interest of community knowledge and just plane curiosity, gonna try it and will report.

    But you are right, longer brake arm would be a whole lot simpler and would work better.

    hehe, my brain is froze up and have to think about this
     
  10. LouieMCman

    LouieMCman New Member

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    Heres my brake using monark rockers, I added a support arm straight down to bolt the brake arm to, it works great.
     

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  11. LouieMCman

    LouieMCman New Member

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    Whoops wrong bike, I'll dig out the other pictures. I did a similar thing to the other bike and it also worked great.
     
  12. corgi1

    corgi1 New Member

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    There are different handlebar brake levers for different leverage(pounds)pull also,,,and too,if the lever on the brake drum pivot is 1 inch from center and delivers 100 lbs power(work),would 1/4 inch additional length on that arm add 25 pounds of work force to the brake pivot,25 % more?(I do not know the real pounds force it delivers this is just a leverage advantage simulation thought)
    Some old guy from way back when (probibly before my time)said something like "give me a lever long enough and I can move the world"
     

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