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why actuators instead of spindle for 2dof

Discussion in 'New users start here - FAQ' started by dirigible, Sep 3, 2020.

  1. dirigible

    dirigible New Member

    Joined:
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    Ontario, Canada
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    My Motion Simulator:
    2DOF, SCN5
    It seems that almost all 2DoF builds rely on two linear actuators (or wiper motors as actuators) on either side of a u-joint mounted seat to tilt side/side. Why is this preferable over a seat/platform that's mounted on a spindle running front-to-back that rotates via a single DC motor? The second option seems like a simpler, cheaper option.
    I'm sure there's a simple reason for this, but it escapes me.

    Thanks!
    dirigible, Sep 3, 2020
    #1
  2. Erik Middeldorp

    Erik Middeldorp Member

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    sheet metal worker
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    Are you forgetting the 2nd DOF, pitching forwards and backwards? A spindle would only be 1 DOF.
    Erik Middeldorp, Sep 3, 2020
    #2
  3. Ryan Matusch

    Ryan Matusch New Member

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    See? I knew there was a simple explanation. :)
    Ryan Matusch, Sep 3, 2020
    #3