Torque wrench settings?

Discussion in 'Motorbike Technical Discussion' started by Bummers, Oct 7, 2005.

  1. Bummers

    Bummers Guest

    Why do manufacturers specify a (biggish) range of torque settings?
    Wouldn't one suffice?
    Bummers, Oct 7, 2005
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  2. Bummers

    John Johnson Guest

    1. calibration of torque wrenches varies
    2. friction between fastener and hole varies (affecting "felt" torque vs
    "applied" torque)
    2 is the result of:
    a) fastener type
    b) fastener quality
    c) contamination (e.g. with lubricants, abrasives, etc.)

    Unless the application is critical, you specify a range that works, and
    design a fair margin of error into the components. If the application is
    critical, you start to see torque-to-yeild fasteners or the work gets
    taken out of the hands of people outside of specialist houses.


    'indiana' is a 'nolnn' and 'hoosier' is a 'solkk'. Indiana doesn't solkk.
    John Johnson, Oct 7, 2005
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