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Thread: Universal Joints & Torque

  1. #1
    Associate Engineer
    Join Date
    Dec 2012
    Location
    Miami, FL USA
    Posts
    1

    Universal Joints & Torque

    Hello,

    It's understood that rotational variances occur in U Joints as the angle of the input shaft increases relative to the output shaft. Can someone refresh my memory as this relates to torque? In other words, is there a percentage increase in torque to drive the input shaft as its angle increases to say 15, 30, 45, 90 degrees relative to the output shaft that stays at 0 degrees? If so, what's the percentage increase at each increment - or at least a general rule of thumb?

    Many thanks.

    Bret

  2. #2
    Technical Fellow
    Join Date
    Feb 2011
    Posts
    1,043
    Hi Bret,

    That would depend on the mechanics of the universal joint. The length of the arms to the cross-bar bearings etc.

    You could start here...
    http://www.engineersedge.com/power_t...lculations.htm

  3. #3
    Senior Engineer
    Join Date
    Dec 2012
    Posts
    33
    Very interesting material.

  4. #4
    Technical Fellow
    Join Date
    Feb 2011
    Posts
    1,043
    You can thank our lionized leader, Kelly, for all that good stuff here.

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