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My DIY 2DOF simulator project

Discussion in 'DIY Motion Simulator Projects' started by stamer57, Aug 6, 2015.

  1. stamer57

    stamer57 Member

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    My Motion Simulator:
    2DOF
    Hi,
    Before presenting my project , I will present myself.
    I'm Steve, 33, from Chailly-lès-Ennery, near Metz in France.
    I'm a computer scientist.

    My project was initially to do a cockpit with triple screen on the base of this commercial one :

    cock.PNG
    I created the structure. But browsing the french forum PCSHM , I saw some dynamic simulator projects, very interesting and exciting, and specially the simukit from @Wanegain .
    Fortunately it was yet compatible with my project.
    So I decided to integrate a 2DOF seatmover and i ordered a kit to @Wanegain .
    After some tests , that's some pictures of the project's progress.
    1.jpg

    2.jpg

    3.jpg

    Soon a video and details if you're interested.
    And sorry for my english
    Bye
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  2. Nick Moxley

    Nick Moxley Well-Known Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, JRK
    Those motor mounts and rear arm mounts look to be on the Thinner side. have you tested and seen any undesirable flex in the mounts ?
    • Agree Agree x 1
  3. Wanegain

    Wanegain Active Member

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 4DOF
    I really like the cockpit. This a very good and beautiful work.
    But I think @Nick Motley is right. It seems very thin... Don't forget that there is a lot of weight at theses points!
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  4. stamer57

    stamer57 Member

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    My Motion Simulator:
    2DOF
  5. stamer57

    stamer57 Member

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    My Motion Simulator:
    2DOF


    • Like Like x 2
  6. Wanegain

    Wanegain Active Member

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 4DOF
    We can see the left motor shaking. This is however well built.
    What I can suggest to increase the optimization is to lenghten the rods if possible.
  7. Leo Burton

    Leo Burton Active Member

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    My Motion Simulator:
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    Great setup!
    Thanks for sharing the photos and video @stamer57

    Thats a very nice rig! Very immersive!
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  8. stamer57

    stamer57 Member

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    Thank you @Leo Burton

    Salut Wanegain,
    Tu peux me préciser ce que veux dire "rods"? Sont-ce les cames?
  9. Wanegain

    Wanegain Active Member

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    My Motion Simulator:
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    Ce sont les bielles.

    Une autre remarque pour avoir les mouvements bien symétriques : il faut qu'en position moyenne l'axe vertical qui passe par la rotule supérieure traverse la came en son milieu comme le montre cette image.

    Another note for well-balanced movements : in mean position, the vertical axis passing through the upper ball cross the crank in the middle as shown in this picture:


    [​IMG]
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  10. stamer57

    stamer57 Member

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    Merci @Wanegain
    Oui effectivement mes bielles sont courtes, surtout sur le moteur droit.
    Pour la position de la rotule supérieur avec la came, oui c'est prévu. Pour l'instant mon entraxe sur la came ne fait que 30mm. J'avais prévu 49mm pour avoir 15° de mouvement. Les moteurs sont déjà fixés pour cette configuration.

    Thank you Wanegain
    Yes my rods are short, especially on the right engine .
    For the position of the upper ball with the crank, so that's expected. For now the crank is only 30mm . I planned 49mm for 15 ° movement. The engines are already set for this configuration.
  11. Nick Moxley

    Nick Moxley Well-Known Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, JRK
    Motor's have Far more torque than most give credit for. I would beef up those mounts somehow.


    PS try and get the screen to show as well, makes matching the motion to whats happening on screen Much easier. ;)
  12. momoclic

    momoclic Active Member

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    My Motion Simulator:
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    Bonjour Stamer57,

    J'ai réalisé une petite étude pour optimiser un 2DOF.
    Si tu respectes ces règles tu gagneras en réactivité en éliminant un max de mouvements parasites et tu diminueras d'autant l'usure des moto-réducteurs.

    http://pcshm-simulateurs-homemade.c...-pour-la-conception-d-un-simulateur-2-DOF.htm

    I conducted a small study to optimize a 2DOF.
    If you respect these rules you will gain responsiveness by eliminating a max of unwanted movements and thou shalt diminish even wear gear motors.
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  13. bruce stephen

    bruce stephen Hammer doesnt fix it, must be electrical

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform, 6DOF
    90 degree gussets where both mounts turn IMHO would eliminate a lot of the flex at motors and at the point where the rods attach.
    gusset.jpg

    clean build nice attention to detail
    Last edited: Aug 7, 2015
  14. stamer57

    stamer57 Member

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    Merci @momoclic
    Je connais déjà ton étude que j'ai lu sur PCSHM.
    Je vais essayer de respecter au maximum ce que tu conseilles. La seule chose que je ne pourrais pas respecter c'est d'avoir les rotules supérieures des bielles sur le même plan que le joint de cardan.

    Thank you @momoclic
    I already know your study I read on PCSHM .
    I'll try to follow up what you advise . The only thing I can not do is to have the upper ball joints connecting rods on the same plane as the universal joint .
  15. stamer57

    stamer57 Member

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    Sorry @Nick Moxley
    I don't understand this sentence. Can you try to say differently please.
  16. stamer57

    stamer57 Member

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    My Motion Simulator:
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    I have new motor support. I'll try a different configuration this week end, maybe vertical.
    I'll post new video.

    Thanks to all for your advice
    • Like Like x 1
  17. Vef445

    Vef445 Active Member

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    My Motion Simulator:
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    He's just saying that it would be nice to see your screen on the video when the sim is in movement (both your screen with the game and your seat).

    Il voulait juste te dire que ca serait sympa de voir ton écran avec le jeu en même temps que ton simu sur la vidéo, histoire de pouvoir comparer les mouvements ;)
    • Like Like x 4
    Last edited: Aug 8, 2015
  18. stamer57

    stamer57 Member

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    Merci pour la traduction @Vef445
    Oui j'essaierai de faire de meilleurs vidéos

    Thanks for the translation @Vef445
    Yes, I'll try to do better video next time.
    • Like Like x 2
  19. stamer57

    stamer57 Member

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    My Motion Simulator:
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    As promised I have some work this weekend.
    Especially on motors supports and cranks.

    20150810_073548_HDR.jpg

    20150810_073543_HDR.jpg

    New video

    • Like Like x 5
  20. Wanegain

    Wanegain Active Member

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    My Motion Simulator:
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    It seems reactive ! I think surge is a little bit stronger, maybe you should lower the % in Axis Assignments. And I suggest you to add roll, pitch (an easy value to test is -30/30 in Tuning Center and 100% in Axis Assignments) and heave (very useful Force but probably the hardest to define).

    For a better immersion with Seat mover, a harness will provide you better sensations (you can't absorb effects).
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