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Thread: Bottom bracket tower

  1. #1
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    Default Bottom bracket tower

    I need to make a bottom bracket tower for a new cast iron surface plate I have just bought.
    Does anyone have any drawings/advice or know where I can buy one from

    Cheers Anders
    Crucial Custom Cycles

  2. #2
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    Default Re: Bottom bracket tower

    IMG_0717.jpgBB Post 1991.pdf

    Both Brignelli and Alex Meade make BB whipping posts. The tooling I have from both are good and do their jobs so I recommend either.

    Posts are real simple. Usually round and lathe turned from solid shaft. Each end has a threaded hole for the securing onto the flat surface and holding the BB shell tight. Add the shell's top face cap/washer and a couple of bolts and you're done.

    When I had mine made for me I asked that the post be case hardened then the ends ground flat/parallel. I had a retired machinist who still did odd jobs do mine. For me the critical dimensions were the clearances between the chain stay and the post's top, hence the beveled top edge. I also wanted a post that had a wide base.

    Attached is the plans I gave the machinist, The actual post ended up with slight design aspect changes based on his suggestions. In 1991 it cost me about $250 and every time I use it I am so glad it is as big and sturdy as it is. What I didn't have done is a sleeve that slips into the shell and over the top bolt. In the years I've used my post without a sleeve I never found a lacking in function or results. Attached is also a photo of the post in action. Andy
    Andy Stewart
    10%

  3. #3
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    Default Re: Bottom bracket tower

    Hi Anders, I sent you an email regarding a bb post. I have made several over the years and can knock one out for you, if you are still looking.
    dan polito

  4. #4
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    Default Re: Bottom bracket tower

    Dan,

    I'd be interested in finding out some details if you're game.
    elysian
    Tom Tolhurst

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    Default Re: Bottom bracket tower

    Hi Tom sure I’ll drop you an email.
    dan polito

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    Default Re: Bottom bracket tower

    Hey Tom - sent an email to your ride-elysian address and it bounced back. What’s a good email for you? Or hit me up at ciclipolito (circle a) gee mail and i’ll give you the details on the post.
    dan polito

  7. #7
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    Default Re: Bottom bracket tower

    Oh! Thanks for letting me know. That should've forwarded and notified you of a my email update.
    I'll see if I can get that straightened out.

    In the meantime, an email is on the way.
    elysian
    Tom Tolhurst

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