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2dof simulator

Discussion in 'Motor actuators and drivers' started by TomSim, Feb 12, 2025.

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  1. Joe Cortexian

    Joe Cortexian Member Gold Contributor

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    Nice. That shaft is a monster.
    Joe Cortexian, Feb 19, 2025
    #21
  2. TomSim

    TomSim Member

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    My Motion Simulator:
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    Some frame welding.
    IMG_20250220_185413403_MFNR.jpg IMG_20250220_185443608_MFNR.jpg
    TomSim, Feb 20, 2025 at 17:56
    #22
  3. TomSim

    TomSim Member

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    More progress... IMG_20250220_214540088_MFNR.jpg IMG_20250220_224334448_MFNR.jpg
    • Like Like x 1
    TomSim, Feb 20, 2025 at 21:45
    #23
  4. Joe Cortexian

    Joe Cortexian Member Gold Contributor

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    That seat looks almost exactly like my old seat. The reclining is convenient but is a wel point in terms of stiffness.
    Joe Cortexian, Feb 20, 2025 at 22:00
    #24
  5. TomSim

    TomSim Member

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    It really seems veri stiff, At first I thought that it will need some supporting tubes but now it seems very stiff. I think I have to drive it day or two and see if here is something to modifyi. Of course I don't know if it is difference when it is in 2dof use than now...maybe I just overkill it right away.

    I'm from Finland, by the way. I wonder if there are other enthusiasts from Finland here?
    Last edited: Feb 20, 2025 at 22:25
    TomSim, Feb 20, 2025 at 22:20
    #25
  6. TomSim

    TomSim Member

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    IMG_20250220_234141724_MFNR.jpg

    I thought that this kind of supporting beam would make it rock solid. It of course makes harder to get out form the seat.
    TomSim, Feb 20, 2025 at 22:46
    #26
  7. TomSim

    TomSim Member

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    I have other projects too:grin IMG_20250220_235424384_MFNR.jpg
    TomSim, Feb 20, 2025 at 22:55
    #27
  8. TomSim

    TomSim Member

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    This shows it is quite sturdy... IMG_20250221_001811495_HDR.jpg
    I weight about 97kg
    • Creative Creative x 1
    TomSim, Feb 20, 2025 at 23:21
    #28
  9. TomSim

    TomSim Member

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    More progress made. Thread inserts welded inside tubes for the seat, shifters attachment in progress and more some supporting pipes and steel plates added. It is still very lightweight, I will weight it when it's done.

    IMG_20250221_232352174_MFNR.jpg IMG_20250221_232209198_MFNR.jpg
    • Like Like x 1
    TomSim, Feb 21, 2025 at 22:28
    #29
  10. TomSim

    TomSim Member

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    Attached Files:

    • Like Like x 1
    TomSim, Feb 21, 2025 at 22:31
    #30
  11. TomSim

    TomSim Member

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    My Motion Simulator:
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    And again more supporting structure.

    Attached Files:

    • Like Like x 1
    TomSim, Feb 21, 2025 at 23:58
    #31
  12. TomSim

    TomSim Member

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    • Like Like x 1
    TomSim, Feb 21, 2025 at 23:59
    #32
  13. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    What is the expected mass of the frame and user?

    The higher the mass the greater the motor power required to control it and, importantly, inertia.
    noorbeast, Feb 22, 2025 at 00:22
    #33
  14. TomSim

    TomSim Member

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    My Motion Simulator:
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    Frame is about 35-40kg with seat, wheel and shifter.

    this is just an estimate. i have no idea what it actually is, i just lift it up in the air and judge from it but I will weight it tomorrow.

    I saw this video and I started thinking, is this solution somehow unusual? Has anyone done it this way? There is vertical movement in that model but I guess it requires motor power and the tilting back and forth is not done in the same way as in the commonly handled model. Anyone have any thoughts on this?

    https://youtube.com/shorts/v7HTiPweUlc?si=fDvAAPcANh5uMEfV
    Last edited: Feb 22, 2025 at 21:24
    TomSim, Feb 22, 2025 at 00:44
    #34
  15. TomSim

    TomSim Member

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    I meant that the forward and backward tilt is next to nothing.
    TomSim, Feb 22, 2025 at 21:26
    #35
  16. TomSim

    TomSim Member

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    Weight is 35kg with seat, shifter, wheel and pedals and I'm 97kg. Is that good or bad? Maybe those 500w motors will have enough power?
    TomSim, Feb 23, 2025 at 19:48
    #36
  17. TomSim

    TomSim Member

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    My Motion Simulator:
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    Here is what I have simulated with simcalc. There is also picture how I'm gonna place motors and uniball rods,
    I only put together the right side for the sake of the example.

    Screenshot 2025-02-23 231748.png Screenshot 2025-02-23 232723.png
    TomSim, Feb 23, 2025 at 22:31
    #37
  18. TomSim

    TomSim Member

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    My Motion Simulator:
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    This top part where wheel base is attached gives little flexing from side to side. I trying to think where I should maybe add some support. It may not need any but if it does, is someone who can give me advice?

    IMG-20250224-WA0005.jpg
    TomSim, Feb 24, 2025 at 18:45
    #38
  19. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Is it side to side flex or a slight torsional twist?
    noorbeast, Feb 24, 2025 at 22:24
    #39
  20. TomSim

    TomSim Member

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    My Motion Simulator:
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    Mostly side to side and some up and down. I didn't know about torsional twist, I
    need to look into it more.
    TomSim, Feb 25, 2025 at 08:49
    #40
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