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Thread: Plumb Bob

  1. #1
    Senior Member ecovelo's Avatar
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    Plumb Bob

    Anyone have/use a plumb bob for bike fitting? If so.... where did you find yours?

    I've been visiting hardware stores for months trying to find a small
    one - keep finding these large to humongous ones (8-24 oz). Checked online and it seems Stanley makes a 4oz one for $5~$7 - but I can't find a distributor.

    I noticed there are some that are "custom" for bike fit - but they are ridiculously expensive and I don't think there is anything "custom" about a plumb bob
    - (or is there?)

    I think I've become obsessed with every nuance of bike fit... and now want to see where my patella is relative to the pedal spindle (k.o.p.s. fit test) on all my bikes and see if I can tell a difference in injury aggravation with micro adjusting.

    Any insight is greatly appreciated
    [SIGPIC][/SIGPIC]
    I love the smell of bicycle grease in the morning.
    I am not, associated, affiliated, nor in any way responsible for any of the creative and informative material, (and incredibly beautiful pictures) posted on the EcoVelo blog/website. (I chose my username before I was ever aware of the website).
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  2. #2
    Senior Member Seve's Avatar
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    If you have a piece of string and say a 3/4" nut or similar etc. it will do the same thing.

    Or do you feel that you need something more precise ?

  3. #3
    Senior Member ecovelo's Avatar
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    Well I wondered about that.... I was gonna steal (oops borrow) a piece of brass from work that I could pull a string through, and someone I spoke to (can't remember who) thought it needed to have a "point" - even for the (bike fit) job I was describing. Now I admit.... I struggled with Physics in college......
    [SIGPIC][/SIGPIC]
    I love the smell of bicycle grease in the morning.
    I am not, associated, affiliated, nor in any way responsible for any of the creative and informative material, (and incredibly beautiful pictures) posted on the EcoVelo blog/website. (I chose my username before I was ever aware of the website).
    2010 Salsa Vaya, 2006 Cannondale Rush, 1992 Cannondale M1000, 1992 Trek 930, 1987 Bertoni Italimerica,
    1983 Centurion Accordo mixte

  4. #4
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    At any age: Always carry a spare.
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  5. #5
    Senior Member Northwestrider's Avatar
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    Just make your own if you like, a string, or fishing line, and a weight, viola

  6. #6
    Randonneur in Training B.Alive's Avatar
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    I used sewing thread and a washer. You just needbto make sure the weight is heavy enough to pull your string tight. If tie the string with a loop bigger than what it's being tied to, gravity will pull it straight.
    ---
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    Brad

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  7. #7
    pbd
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    Fishing weight.

    fishing-sinker.jpg

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    Flotation rope and a McD's Quarter Pounder. (j/k)

    Seriously, I've used fishing line, small twine, nylon thread, and 3/4" hex nuts, whatever was handy.

  9. #9
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    Yes, just about anything will do. A little heavier is good so it isn't as likely to be blown around - and for the string you want to use some that's reasonably flexible so it gets pulled straight. I use some thread tied to the round opening at the end of a cresent or other wrench. No need for any special tool.

  10. #10
    Senior Member ecovelo's Avatar
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    Awesome. simple. Thanks for all the input!
    [SIGPIC][/SIGPIC]
    I love the smell of bicycle grease in the morning.
    I am not, associated, affiliated, nor in any way responsible for any of the creative and informative material, (and incredibly beautiful pictures) posted on the EcoVelo blog/website. (I chose my username before I was ever aware of the website).
    2010 Salsa Vaya, 2006 Cannondale Rush, 1992 Cannondale M1000, 1992 Trek 930, 1987 Bertoni Italimerica,
    1983 Centurion Accordo mixte

  11. #11
    Senior Member ecovelo's Avatar
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    Flotation rope and a McD's Quarter Pounder. (j/k)




    That would mean I'd have to visit a McDs then and that's just gross....
    [SIGPIC][/SIGPIC]
    I love the smell of bicycle grease in the morning.
    I am not, associated, affiliated, nor in any way responsible for any of the creative and informative material, (and incredibly beautiful pictures) posted on the EcoVelo blog/website. (I chose my username before I was ever aware of the website).
    2010 Salsa Vaya, 2006 Cannondale Rush, 1992 Cannondale M1000, 1992 Trek 930, 1987 Bertoni Italimerica,
    1983 Centurion Accordo mixte

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