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Question Thoughts on FREX 6DOF G-Force Sim Rig?

Discussion in 'Commercial Simulators and Peripherie' started by Chipless, Jan 5, 2020.

  1. Chipless

    Chipless New Member

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    Although I doubt anyone on here has tried this rig personally, I would still love to hear your opinions on this. Especially @SeatTime, since this is somewhat similar in theory to one of the latest iterations of his seats. Undoubtedly, it will be expensive, and it doesn't seem like the most efficient way to simulate the desired g-forces, but I am a total novice, and would appreciate the discussion on the merits and/or shortfalls of rig such as this one.


  2. Ads Master

    Ads Master

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  3. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    Yes, very similar to what I have, although the movement of my seat base and back is fully independent and I can adjust the width of my 'seat'. I can see what they are trying to do, but they are still leaving allot on the simulation table, with no active paddles and harnesses. I think I am getting way more value out of my current 6 actuators.
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  4. thefost

    thefost New Member

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    Huh, that's a really interesting system. So in terms of motion, would it be pretty much be doing the exact same movements as a full sized 6DOF rig, only it's just doing it for the seat with a very small stroke?
  5. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    Yes, but similar to my own sim it uses the surrounding 'seat' as a pressure pad to apply extended DOF pressure to the body above and for longer then what is normally possible with a standard Stewart Platform. It therefore only needs to move a small amount.
  6. thefost

    thefost New Member

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    Thanks SeatTime. So here's a weird idea that I'm wondering if you think is theoretically possible. Let's say I have a normal full sized 6DOF simulator rig (say flypt style). What if I connected some bowden cables to each of the actuators and then used those cables to control a second, much smaller stewart platform below the seat. With much lower stroke and some clever engineering, do you think it would be theoretically possible to use the second stewart platform to create a g-seat kinda like in the video?
  7. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    Yes, but it would be challenging to build and 'tune'.
  8. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    My Motion Simulator:
    2DOF, DC motor, Arduino
    it's a kind of gecko seat inverted. With Gecko seat you have to bear the seat on your shoulder... I tried and it's awfull. And you have to keep it centered (if not you bump the limits). This awareness is really bad for immersion.

    Here, it's much better! no weigth, no need for the user to be aware of anything else than driving.
    I'd really like to test it :)
  9. BlazinH

    BlazinH Well-Known Member

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    Its bad for immersion on G systems for the head too. That's why I designed G-skull to self center as g-forces cease if your head has moved from center. This makes your head and neck feel like they're naturally righting themselves so there's no break in immersion.
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