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Compact 2DOF Full Frame

Discussion in 'DIY Motion Simulator Projects' started by CaterhamJoy, Apr 2, 2020.

  1. CaterhamJoy

    CaterhamJoy New Member

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    Hey All

    Having spent the past few years on and off thinking about building a motion rig, I decided the time is right to bite the bullet and start.

    Due to space restrictions at home, the plan is to create a very compact 2DOF Full Frame, similar to noorbeast's beauty (but probably significantly worse build quality), that can be split apart for storage.

    The base, motors, controllers, PSU, UJ and Top section will always remain one piece, with the idea that I will make the wheel & pedal mount removable.

    I plan on re-using my office chair for the actual seat to begin with, which will screw and unscrew with some thumbscrews, and upgrade to a better seat once I have more room (will probably buy a new place later this year and plan to have a dedicated room!)

    I have started the frame design, but I am still trying to decide on motors and controllers. I will use server PSUs as I can get plenty from work gratis.

    Motion Sim v2.png

    For motors, I am leaning towards one of the offerings from motiondynamics (although shipping isn't cheap to the UK), at present I am looking at the Worm Drive 12V 200W 180 RPM motors.

    I would appreciate some thoughts on the motor controllers though. Are JRKs still the go to, or do people prefer a newer different offering?

    Looking forward to getting some parts ordered and starting the build!

    Thanks

    Anton

    Motion Sim v2.png
    CaterhamJoy, Apr 2, 2020
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
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    Innovative tech specialist for NGOs
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    St Helens, Tasmania, Australia
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    +10,778 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    noorbeast, Apr 3, 2020
    #2
  3. CaterhamJoy

    CaterhamJoy New Member

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    Noorbeast,

    Thanks for the feedback. I remember reading about your change/upgrade to these gearboxes in your build thread.

    Ill contact the team at motiondynamics and see if they can supply the the same motor I had earmarked but with a 50:1 or 60:1 gearbox instead of the 25:1.

    Thanks

    Anton
    CaterhamJoy, Apr 3, 2020
    #3
  4. CaterhamJoy

    CaterhamJoy New Member

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    So I have made a bit more progress on the planning, looking at how to mount the motor and and the arms...

    (I just modelled with metal bar, but the arms would be rose joints and turnbuckles/threaded rod, and I think maybe I need to push the arm out further, so that it can't interfere with one of the bottom tubes).

    Motion Sim v4.png

    Once I have finalised a few things, I will be running the numbers through the SimCalc application.

    I am currently trying to source the UJ. I am currently thinking:

    2X https://rimmerbros.com/Item--i-600656P (Flange Yolks)
    1 X https://rimmerbros.com/Item--i-GUJ108 (Universal Joint Bearing

    Does that look like the right thing? I have had car driveshafts built for me before, but never one with two flange yolks!

    Thanks

    Anton

    Motion Sim v4.png
    • Like Like x 1
    CaterhamJoy, Apr 5, 2020
    #4