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3DOF High Angle Conception, Your opinion?

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Marki, Dec 7, 2020.

  1. Marki

    Marki Marki

    Joined:
    Nov 16, 2020
    Messages:
    16
    Occupation:
    électromécanicien et Concepteur mécanique
    Location:
    Montreal, Canada
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    +13 / 0 / -0
    My Motion Simulator:
    3DOF
    Hi !
    I am in the brainstorming stage for my project i would like to have your opinion.

    This is my Concept for a 3dof FlightSimulator, the principal utillity is for Condor 2,
    What Do you Thing About The Fixed Double Shaft Actuator? and the mechanical principle?
    Take a Note ,The Drawing is a Rough draft its just for the mechanical principle.

    Specs:
    Pitch up 50Deg
    pitch down 26 Deg
    Roll : 46 Deg

    -Odrive
    -330W 3000RPM BLDC 86BLF03 Motor Ratio 1:1
    -600mm 1605 Screw (Stroke = 490mm)
    I Think This setup are power limited, if i compare with 6Dof with 6x 330w
    but for Flight sim With Slow movement 330w X3 motor its enough?

    And Im not sur witch software can Drive this,
    Maybe FlyPT mover with 3DOF Rig?



    upload_2020-12-7_16-16-35.png

    upload_2020-12-7_16-17-30.png

    upload_2020-12-7_16-18-42.png





    The Video :



    Thankyou to tell me If somting Goes Wrong , Thanks

    @Flymen
    • Like Like x 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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    144,620Coins
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    +10,741 / 52 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Interesting idea.

    I think it would be a good idea to build a working model, with the same pivoting joints, my guess would be that it would be unstable under load with uni style joints top and bottom of the front actuators, combined with the rotating joint on the rear.
    • Agree Agree x 3
  3. Flymen

    Flymen Flymen Gold Contributor

    Joined:
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    My Motion Simulator:
    DC motor, 6DOF
    Hi , maybe you will have some problem of stability , exemple on your last pic ,
    With this position your seat will goes back because the angle of the rear actuator follow the two others
  4. Chris Chopping

    Chris Chopping Member

    Joined:
    Jul 24, 2020
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    Mechanical Engineer
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    Melbourne, Australia
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    My Motion Simulator:
    2DOF
    Adding to above. Stability looks like an issue, maybe need spherical bearings at the bottom or top rather than two UJ's as they could bind or they wont re align when back in normal position.
    • Like Like x 1
  5. Marki

    Marki Marki

    Joined:
    Nov 16, 2020
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    électromécanicien et Concepteur mécanique
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    +13 / 0 / -0
    My Motion Simulator:
    3DOF
    Thanks ,
    im agree with you , the upper ujoint have to rotate to allow this movement this can be a problem

    I have difficlult to understand what kind fo Spherical bearing you talk ? do you have a link or picture?

    in first version i have Rodend but this limit my max angle.
    upload_2020-12-8_8-39-24.png
  6. ChubbyWeasel

    ChubbyWeasel New Member

    Joined:
    Oct 17, 2020
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    14
    Occupation:
    Retired
    Location:
    USA
    Balance:
    65Coins
    Ratings:
    +4 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    What about a u-jount and two flange yokes from a car? I picked a Spicer 2-2-939 for $10 USD.
    • Like Like x 1