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Seattime's Sims

Discussion in 'DIY Motion Simulator Projects' started by SeatTime, Mar 8, 2018.

  1. SeatTime

    SeatTime Well-Known Member

    Joined:
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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    Everyone builds to their available time, budget. Still allot of fun in a well made 2DOF.
    • Agree Agree x 1
  2. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    Currently in Queensland on holidays, but have been able to find a servo locally at a good price for the main heave of my new rig. 1.8Kw at 3000rpm. Should be waiting for me when I get back.

    Main Heave Servo.jpg
  3. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Do you have a link to the supplier and cost?
    • Like Like x 1
  4. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    • Like Like x 1
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    +9,133 / 46 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Thought we may have had a cheap Aussie option.
  6. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    The price really was not that different, apart from shipping and time. Hard to beat the Chinese for price ...
  7. Trigen

    Trigen Active Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    Ive been following in your footsteps a bit and im adding a moving backrest. Thing is and i suppose it depends what motor and linkage you attach but when you have one one a slider and the moving back there's some flex on top where there are no hinges from my small experience. I was thinking of just adding some rollers pressing against a plate to avoid any side motion but i'm curious to see how you have done it?
  8. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    Were it could be a issue, I do not use a standard hinge but bearings and a polished rod - from some CNC kit (see old phone image). There are also good quality door hinges that you can purchase that are designed for big heavy doors and run on bearings.

    Front Hinge.jpg
  9. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    Maybe found a picture that better explains it.

    Hinge.jpg
  10. Trigen

    Trigen Active Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    Thanks. I had a couple of choices one of which are those bearings so I'll scavenge them off another project today
  11. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    If you have the rods with screw holes in them that will make your job easier.
  12. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    Testing the new 1.8KW AC servo motor which will drive the main heave on my new sim. It is stupid powerful :).

    • Like Like x 3
  13. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    Hooked it up to the AI in Assetto Corsa via Simtools to give it some more realistic data. Mmm, will have to see if I need to turn the speed down once I have to sit in it ..

    • Like Like x 4
  14. Trip Rodriguez

    Trip Rodriguez VR Pilot

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    My Motion Simulator:
    6DOF
    SeatTime, I have read your last few pages here but didn't get a good idea of how you intend to use that one very powerful motor. I'm still thinking in terms of what we discussed on my thread: What to do about the problem of what happens if the actuators don't all move together as they are supposed to do. Going to only one motor would also open up two additional actuator channels for my G-systems which I very much want to do.

    I have to say, my ego is liking that after quite a long time following and being inspired by your innovations, you seem to now be somewhat following the path I came up with in my own thread. ;) Complete with images of the ACME DMS, and talk of a large "real" heave movement to supplement the G-system heave. =D

    For a while I had been looking at adding some elements of Bergison's design, but ultimately more or less abandoned the idea of using any of his features at all for the false cues I see as inherent to his design.

    It will be a long while before I can get back to work on my own simulator as I too am in the process of moving from one house to another among other things. In the meantime the main thing rolling around in my head is how I might drive my huge 1300mm+ heave axis "elevator" using only one large servo motor. The drive system is the main problem. A gearbelt is my best thought so far, or a chain and sprockets, but it would be a very long belt or chain. I'd love to see what you have in mind.
  15. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    Yep, single big servo main heave. Learnt early on in life to always keep a open mind and not be pigheaded (well at least try :p). Plan to drive the big heave from one side - like a fork lift, but it will be supported on the other side and may have a passive drive/balance system if required - will see what pops out. Was originally going to drive it from the back, but driving from the side opens up more possible options. May end up a bit of a hybrid.
  16. Trip Rodriguez

    Trip Rodriguez VR Pilot

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    My Motion Simulator:
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    @SeatTime I'm sure my sim will be much, much heavier than yours overall but hope that what you come up with might help me solve this problem as well. I look forward to photos or drawings.
    Last edited: Aug 11, 2020
  17. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    So impressed by the AC servo that the Plan is to slowly phase out my obsolete DC motors to AC. Unfortunately this is not a cheap thing to do, so I am going to change a few things to get a better initial bang for buck, while not changing my original design brief. Ie. Easy entry/exit, minimal footprint and good portability. I have also decided to add my big 4K screen into the mix for people who cannot handle VR - which has been more people then what I originally thought.
    • Like Like x 1
  18. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    I am using 2 set HGR20-800mm Hiwin-Linear Rails as they run way quieter then SB12 guide rails, but you do have to be careful in how you install them. The 'seat/rig' will sit basically at its balance point in between the two posts, to minimize the forces involved. This would not be possible with your design.
  19. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    DC motor, AC motor, Arduino, Motion platform, 6DOF
    Sort of like this, but the towers may be a bit further apart to clear control peripherals. The usual harness/pressure systems will also be fitted. Edit: the towers will likely not be that high as well.

    New Rig.jpg
    Last edited: Aug 11, 2020
  20. Trip Rodriguez

    Trip Rodriguez VR Pilot

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    My Motion Simulator:
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    Thanks SeatTime. I suspect that what you have in mind is even more compact than I thought. Are you eliminating your carbon fiber pod, or will that be included on the moving platform?
    • Old Old x 1