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Motor Selection ?

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Jason Currington, Sep 1, 2015.

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  1. Jason Currington

    Jason Currington Member

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    I am around 300 lbs and want my motors to have a mild/longer throw. I am building a 3DOF unit. Need to keep cost in mind as well. Any help is welcome.
    Jason Currington, Sep 1, 2015
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    For a big bloke sim you will definitely want to take full advantage of leverage in your design, I am guessing when you say 3DOF you mean something like a shoulder mount seat shaker with traction loss?
    noorbeast, Sep 1, 2015
    #2
  3. Jason Currington

    Jason Currington Member

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    I would like to make a platform 3dof... Being weight an issue. Thinking maybe a center strut or support to aid the motors ?
    Jason Currington, Sep 1, 2015
    #3
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    If it is 3DOF with heave you want then yes you will need spring assist.

    Here is a big bloke around your size on my compact sim: http://www.xsimulator.net/community/threads/dx-racer-compact-simulator.5866/page-15#post-84591

    And this was how the sprung heave pivot was set up: http://www.xsimulator.net/community/threads/dx-racer-compact-simulator.5866/page-15#post-83752

    Others have used custom made springs and you could also consider the strut from the rear of some small cars, though those designs tend to be pretty big to allow for the strut.

    While I am confident my compact sim can take a big bloke I would not recommend it for daily use, you would be better off maximising the leverage more, even if using a similar type sprung pivot.
    noorbeast, Sep 1, 2015
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  5. Jason Currington

    Jason Currington Member

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    That is a good design... Although I am looking for a larger footprint machine. I would like it to be like the one in this link. My main concern is weight. I need a set of motors that will take me, rig, and do it for hours on end without heat issues. Can you suggest any motors that would be useful ?
    Jason Currington, Sep 1, 2015
    #5
  6. Jason Currington

    Jason Currington Member

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    https://www.youtube.com/watch?t=44&v=VvBojB_RUBA
    Jason Currington, Sep 1, 2015
    #6
  7. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    noorbeast, Sep 1, 2015
    #7
  8. bsft

    bsft

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    You are talking 3 DOF lift. That gets expensive. Speak to @speedy or @BlazinH
    bsft, Sep 1, 2015
    #8
  9. Jason Currington

    Jason Currington Member

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    ok so that looks like more than I want to get involved with my first time around. So what kind of DC motor would I need for a larger scale machine. I would like to have close to the same configuration in the link. Knowing now that AC right now is not going to be an option. maybe more like this to aid the motors ?
    • Like Like x 1
    Jason Currington, Sep 1, 2015
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  10. bsft

    bsft

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    AC motors, forget DC
    Although a member did it in the past with 12v boat winch motors, assisted spring and JRKS, but he was half your weight.
    Whats your intended games? Race? Flight?
    bsft, Sep 1, 2015
    #10
  11. Jason Currington

    Jason Currington Member

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    My Motion Simulator:
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    Would like to play games like project cars. mainly race sims.

    What configuration would you suggest would give me the best bang for the buck.. I am a welder and have cheap and very good resources for materials.
    Jason Currington, Sep 1, 2015
    #11
  12. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    noorbeast, Sep 1, 2015
    #12
  13. Jason Currington

    Jason Currington Member

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    United states
    Jason Currington, Sep 1, 2015
    #13
  14. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    300lbs is not a lightweight but imo you could get it working by using 12V winches but beware the noise they produce. The main problem would be to aquire cheap and working motor drivers. NTL if you like mainly racing sims you should go the 2DOF route plus an additional DOF for traction loss.
    Pit, Sep 1, 2015
    #14
  15. Jason Currington

    Jason Currington Member

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    Could you give me an idea of what type of winch motor... or will any winch do ? Also motor drivers what resources would you have on those

    Construction and fabrication and configuration (mechanical/Software) is my strong points. I know little about ratios and what ratings certaint parts require to be hardy enough to take a 300 plus pound beating

    Any input is helpful

    Thanks
    Jason Currington, Sep 1, 2015
    #15
  16. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    You really should nail down the design first, as motors choice depend somewhat on design, performance expectations, and what is available for a particular budget.

    Some winch information by @Pit and others: http://www.xsimulator.net/community/faq/dc-winch-motors-for-motion-simulators.151/

    Depending on where you are in the world you could also consider:

    The Canadian 50:1 motors: http://www.ebay.com/itm/GEAR-MOTOR-...483?pt=LH_DefaultDomain_0&hash=item51bed470a3

    The UK 60:1s
    http://www.ebay.com/itm/12V-DC-Gear...893?pt=LH_DefaultDomain_3&hash=item58c73b3b85
    http://www.ebay.com/itm/12V-DC-Gear...270?pt=LH_DefaultDomain_3&hash=item58c73b352e

    Or 50 or 60:1 from Motion Dynamics if you are in Australia:
    https://www.motiondynamics.com.au/1...ve-geared-motor-200w-21-256-rpm-7.5-45nm.html
    https://www.motiondynamics.com.au/320w-12v-24v-worm-drive-21-256-rpm-25-75nm.html
    • Agree Agree x 1
    noorbeast, Sep 1, 2015
    #16
  17. SeatTime

    SeatTime Well-Known Member

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    Maybe a sticky for this and related questions - Ie. 'So you want to build a 6DOF'. It is not as simple/cheap as many new to this hobby may think.
    • Agree Agree x 3
    SeatTime, Sep 1, 2015
    #17
  18. speedy

    speedy Well-Known Member

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    My Motion Simulator:
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    Hi @Jason Currington ...
    1- regarding the latest video for 3DOF these are servo motors which are more expensive than the normal AC 3phase induction motors ...

    Here is a project with a similar demands as you have as you reminded me with @cthiggin with his near finish project ...
    http://www.xsimulator.net/community/threads/3dof-ac-motor-platform-95-finished-020515.5085/

    2- you say you have a good skills in wilding and metal fabrication ...
    you can choose the best suites you from this actuators collections designs and ideas ... then you can choose the motor for it ...
    Linear Actuators Designs

    And my favourite Idea so far is this next video ... waiting to be discovered :thumbs


    and here is my Simulator ...
    3 phase Ac motors Pyramid simulator

    Best regards ...
    Last edited: Sep 1, 2015
    speedy, Sep 1, 2015
    #18
  19. bsft

    bsft

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    Shoulder mount 2 DOF seat mover with 50 or 60:1 box 200 watt motors and JRKS will get you moving, even at your weight @Jason Currington
    • Agree Agree x 3
    bsft, Sep 1, 2015
    #19
  20. Nick Moxley

    Nick Moxley Well-Known Member

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    My Motion Simulator:
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    100% agree with bsft, Ive had a 300Lbs buddy in my rig on 25:1 and ya sure they weren't as fast as with me in the seat, but still they did their job.
    • Agree Agree x 1
    Nick Moxley, Sep 1, 2015
    #20
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