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New Member - 4 Actuators vs 3DOF Gear motors?

Discussion in 'New users start here - FAQ' started by Pterfloth, Sep 19, 2023.

?

Linear Actuator on each corner or 3DOF gear driven motors?

  1. Linear actuator

    0 vote(s)
    0.0%

  2. 3DOF gear driven motor

    1 vote(s)
    100.0%
  1. Pterfloth

    Pterfloth New Member

    Joined:
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    Hello!

    I am Pat from Vancouver Island in BC, Canada. Preparing to embark on a motion simulator build. I currently have a folding rig from Next Level so I am starting from scratch.

    My first question is should I build an a linear actuator based rig with an actuator on each corner or a 3DOF gear motor drive rig? Which provides the most realistic and useful motion for sim racing? I want to build something that has low latency and compliments my current DD wheel and 4-Dayton transducer setup.

    Your experience and feedback would be very much appreciated! TIA
    Pterfloth, Sep 19, 2023
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Innovative tech specialist for NGOs
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    My Motion Simulator:
    3DOF, DC motor, JRK
    Technically speaking there is the chance with a 4 actuator peg leg design that fast movement may result in an actuator not being in contact with the ground, resulting inn a false motion cue,

    But in practice lots of members have built 4 actuator designs with no real issues reported.

    Actuators are more noisy than rotary powered rigs, but their movement is linear, which is a slight advantage.

    So I think the choice is more one of personal preference and related consideration such as space and cost.
    Last edited: Sep 21, 2023
    noorbeast, Sep 20, 2023
    #2
  3. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    4 peg leg actuators is only 3 dof

    Simpler to use 3 actuators not 4 for a more stable and accurate rig
    Gadget999, Sep 20, 2023
    #3