How to tell if a biker has a pin in his leg

Discussion in 'UK Motorcycles' started by geoff, Feb 10, 2011.

  1. geoff

    Catman Guest

    Different league, but I got some Neodymium notice board magnets from
    eaby to replace the rubbish we normally have. Bloody great they are.

    --
    Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3
    Tyger, Tyger Burning Bright (Remove rust to reply)
    116 Giulietta 3.0l Sprint 1.7 GTV TS GT 3.2 V6
    Triumph Sprint ST 1050: It's blue, see.
    #www.cuore-sportivo.co.uk
     
    Catman, Feb 11, 2011
    #21
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  2. Using the patented Mavis Beacon "Hunt&Peck" Technique, Champ
    Airport metal detectors don't rely on the metal being magnetic.

    If you remember, the little metal detector I brought to France found
    your tin leg quite successfully.
     
    Wicked Uncle Nigel, Feb 11, 2011
    #22
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  3. geoff

    Mark Olson Guest

    There has to be some minimum threshold or they'd be going off from the
    rivets in denim jeans, etc., essentially rendering them useless.
     
    Mark Olson, Feb 11, 2011
    #23
  4. geoff

    Switters Guest

    There's also an element of random selection. Which is better than racial
    profiling and harder to beat.
     
    Switters, Feb 11, 2011
    #24
  5. geoff

    ian field Guest


    I thought that worked by eddy currents.

    Like the drag cup in a speedo - its made of aluminium and not magnetic, but
    the spinning magnet spinning next to it drags it round.

    The drag cup is like a shorted turn so the energy imparted to it causes it
    to move - if you locked the drag cup and spun the magnet fast enough the
    energy would heat the drag cup, I sort of imagined that's how an induction
    hob worked.
     
    ian field, Feb 11, 2011
    #25
  6. geoff

    Mark Olson Guest

    My guess is the resistivity of the pots & pans is fairly critical to making
    an induction hob work. According to Wikipedia, heating due to ferromagnetic
    hysteresis accounts for at most 10% of the heating, the rest is from eddy
    currents through the resistive bulk material.

    http://en.wikipedia.org/wiki/Induction_cooker
     
    Mark Olson, Feb 11, 2011
    #26
  7. geoff

    Catman Guest

    Don't they have to be *really* flat as well?

    --
    Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3
    Tyger, Tyger Burning Bright (Remove rust to reply)
    116 Giulietta 3.0l Sprint 1.7 GTV TS GT 3.2 V6
    Triumph Sprint ST 1050: It's blue, see.
    #www.cuore-sportivo.co.uk
     
    Catman, Feb 11, 2011
    #27
  8. Where flat = as close as possible. Square laws and distance and shit.
     
    steve auvache, Feb 11, 2011
    #28
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