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Compact seat mover vs simx style design

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by PiaMan, Jun 11, 2016.

  1. PiaMan

    PiaMan Active Member

    Joined:
    Aug 2, 2015
    Messages:
    192
    Location:
    Saskatchewan, CANADA
    Balance:
    607Coins
    Ratings:
    +131 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, SCN5, Arduino
    I'm looking to build a motion simulator using pgsaw motors and motomonster.

    Ive tested the motomonster setup with SMC control and got everything functioning with a vw van wiper enough to start consider building the frame and choosing the correct motors.
    I currently have a DIY simX setup with traction loss. This new one will be for guests. I wanted to use just the two motors (like simX stage 1). I was going to basically copy my design from simX build and use gear motors instead. But now I've been considering the compact design.

    My question is why is the third motor used for heave?
    Do the two motors in the front not pull the seat forward in the same manner the third one pushes it up? Could i get a simX stage 1 style movement from a compact design with just the two motors on the front?

    Thanks so much for any advice

    Attached Files:

    PiaMan, Jun 11, 2016
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
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    21,154
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,610Coins
    Ratings:
    +10,909 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    A compact design does not have the same leverage as a shoulder mount, but can produce reasonable motion when powerful enough motors are used, even as a 2DOF design.

    A 3DOF design does not just tilt forward like a 2DOF, it can actually move up and down as well, which is a proper heave axis.
    noorbeast, Jun 11, 2016
    #2
  3. PiaMan

    PiaMan Active Member

    Joined:
    Aug 2, 2015
    Messages:
    192
    Location:
    Saskatchewan, CANADA
    Balance:
    607Coins
    Ratings:
    +131 / 2 / -0
    My Motion Simulator:
    3DOF, DC motor, SCN5, Arduino
    thanks noorbeast for the advice. So if space isn't super important, best to go for should mount it sounds like?
    PiaMan, Jun 11, 2016
    #3
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,154
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    148,610Coins
    Ratings:
    +10,909 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    That gives the best leverage and can take full advantage of the 25:1 motors.
    noorbeast, Jun 11, 2016
    #4