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3DOF question

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Kono, Jul 7, 2021.

  1. Kono

    Kono New Member

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    My Motion Simulator:
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    I've been researching to build a rig for quite some time now. I have everything planned out for a simple 2DOF rig and got an idea.

    Wouldn't rotating the seat give one the same sensation of traction loss compared to rotating the rig about an axis in the front?

    Keep in mind, I've never experienced what a motion rig is like. May be a dumb question.
  2. Ads Master

    Ads Master

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  3. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Yaw, rotating around a central point, is useful for helicopter simulation and to a lesser extent flight simulation, but only really applies to racing as a genuine axis in a spin.

    Traction loss, pivoting near the feet, is a different force from yaw and more accurately reflects the simulation of the rear end braking loose in driving simulation.
  4. Kono

    Kono New Member

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    I wonder if offsetting the pivot say a foot or so from the center of the seat would be like. Thanks for humoring me, just thinking outside the box a little.
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    It would help in terms of partial traction loss simulation, but keep in mind it would still be a bit unnatural, for example on a full frame the portion of the body forward of the pivot moves the wrong way, plus the other design consideration, which is the amount of inherent design leverage being greater the further from the pivot.
  6. Kono

    Kono New Member

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    My Motion Simulator:
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    I was thinking that the pivot would be in front of the seat but you are correct, it would kind of negate the design advantages. Rotating the seat itself would be simple but once you throw in the leverage of the pivot, you're right back at using some type of roller system to support the load.

    Thanks for the help!