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Showroom 3-DOF Flat-bed Drifting simulator with AC motors [ Finished ]

Discussion in 'DIY Motion Simulator Projects' started by speedy, Apr 5, 2016.

  1. speedy

    speedy Well-Known Member

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    Hi Guys ...
    As usual everything starts with inspiration ideas from this great site ... thanks to you all hug: ... and I was attracted to make a traction loss with sway in the beginning ... but it turned up to be a great drifting mechanism :grin ...

    it all started 4 months ago with sketchup and SketchyPhysics with my own design for this cockpit model ...
    ASP base full structure.jpg

    Hooked to SimTools via this great tutorial and tested it see some results here ...


    then started with the core front and rear bearings arms and the frame ...
    ASP base full structure.jpg
    the center shaft ...
    2014-09-27 04.45.14.jpg 2014-09-27 04.51.41.jpg 2014-09-27 04.49.16.jpg


    fastened inside a two wooden blocks gave me this solid peace ...
    2014-10-21 01.06.19.jpg 2015-02-18 00.56.29.jpg

    then to the second level support arms ...

    2015-02-18 00.56.09.jpg 2015-02-18 00.57.19.jpg


    moving to the frame ...

    2014-10-22 01.39.29.jpg 2014-10-22 01.40.53.jpg


    more to come :thumbs
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    Last edited: Feb 16, 2017
  2. Ads Master

    Ads Master

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  3. Nick Moxley

    Nick Moxley Well-Known Member

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    My Motion Simulator:
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    Subscribed :thumbs:cheers
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  4. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Great project!! are you ready now to restart it?
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  5. cthiggin

    cthiggin Active Member

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    Hi friend Speedy,
    So happy to see you're new simulator under way. Couldn't happen to a nicer fellow.
    Blessings,
    Tom
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  6. speedy

    speedy Well-Known Member

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    My Motion Simulator:
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    Thanks @cthiggin for the kind words ...

    hug: Everyone and welcome ...

    I have almost finished it buddy ... :cheers
    20160404_234933.jpg
    waiting for a 1605 ball screw shaft and nuts to replace these lead screw with bearings Idea ... it turned out that shaft are so soft Iron to handle the fast motion ... a lot of Iron filings is coming out .
    20160406_052335.jpg 20160406_053416.jpg
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    Last edited: Apr 7, 2016
  7. cgodwin

    cgodwin Active Member

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    Is that bearing setup designed to avoid backlash? It looks like maybe a spring on each bearing forcing them apart to keep some pressure on them?
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  8. speedy

    speedy Well-Known Member

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    My Motion Simulator:
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    which is already there :thumbs ... but my lead screw seemed not hardened after "cold rolled " so is giving filings OR the bearings are jumping the threads if spring is lightened ... I can't get a spring pressure balance between this and that :confused:...

    20160406_055712.jpg 20160406_055642.jpg 20160406_055607.jpg 20160406_061223.jpg 20160406_061249.jpg
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    Last edited: Apr 6, 2016
  9. speedy

    speedy Well-Known Member

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    My Motion Simulator:
    3DOF, AC motor, Arduino, Motion platform
    Woodworking and building the chair bridge steps started after testing everything under SketchyPhysics ...

    Physics ASP base full structure1.jpg
    A flat layout for all the MDF parts are exported to a .cdr file then to an artcut pattern drawing on A0 sheets ...

    ASP chair base.jpg ASP chair base.jpg
    Last edited: Mar 4, 2017
  10. Pit

    Pit - - - - - - - - - - - - - - - - Staff Member Moderator Gold Contributor

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    @speedy congrats can't wait to see the action :) Very interesting design you created.
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  11. crammy

    crammy Active Member Gold Contributor

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    looking forward to seeing this finished. How do i subscribe to it?


    Found the watch thread button
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  12. insanegr

    insanegr !N$@n€

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    @crammy above the first post at the right is a watch thread button. mine is already clicked :)
    Untitled.png
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  13. crammy

    crammy Active Member Gold Contributor

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    cheers mate. i did find it and edited my post
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  14. speedy

    speedy Well-Known Member

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    My Motion Simulator:
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    Thanks @Pit you still have the lead buddy ...

    Most of the woodworking structure is typically easy for you guys to imagine ... So going directly to the controller and the electronics side details ...

    For a controller I'm using the RMC controller with some minor modifications to the outer shape as will be updated in the original thread ASAP ...

    For motors I used a 3 3-phase AC motors ... two of them are 1/4 HP or .18kw "the front and rear motor " ... and one 1/3 HP or .33kw "the center motor " ...
    20160406_160649.jpg

    For feedback pot I'm using a 10k 10 turns regular pot with a 3cm roller on it's axe to give me a travelling distance of a 9.5cm for each turn that would be a 95cm for the full 10 turns with max resolution ... which I have a 90cm travelling distance so it will not reach the breaking limit for the pot sparing 1/2 turn on each side ... then using a bicycle breaking wire and a spring to get the linear to circular action needed ...
    20160406_163107.jpg 20160406_163127.jpg 20160406_163217.jpg

    For VFD's I used my old 1 HP inverters ...
    20160406_164446.jpg

    For computer I salvaged the MB and the HD from an HP compaq CD7700 minitower with some of it's case chases to fasten everything securely under the seat ...
    20160406_164524.jpg 20160406_164754.jpg
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    Last edited: Apr 7, 2016
  15. speedy

    speedy Well-Known Member

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    My Motion Simulator:
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    The 1605 ball screw with Nut has just arrived ... So back to work :) .
    20160406_132006.jpg
  16. cgodwin

    cgodwin Active Member

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    I love this build since it is so much different than a typical simulator. It is good for all of us to see a creative build and gather ideas. Thanks for sharing!
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  17. speedy

    speedy Well-Known Member

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    You're very welcome @cgodwin ...

    Hi guys ... It might be a good idea to give a goodbye video for this old noisy shaft before replacing it ... the cute AI driver was so accurate with no TL :D

    Last edited: Apr 7, 2016
  18. speedy

    speedy Well-Known Member

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    My Motion Simulator:
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    For motors continuous cooling I cut the motors shaft flushed to the rear end cover and replaced them with a 12v 8cmx8cm fans ...
    20160131_213706.jpg
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    Last edited: Apr 7, 2016
  19. cthiggin

    cthiggin Active Member

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    Question Speedy - Can you still use your existing rear motor impellers that came on the motors for cooling also????? I know mine are large with a number of blades for cooling?

    Tom
  20. speedy

    speedy Well-Known Member

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    Of course not ... and I mean I removed the "impellers" and cut the motors shaft itself ... so there is room to install the 12v fans inside the back cover ... plus it looks good too .
    The issue is those impellers "in my motors" are designed to give air at the rated operating RPM ... they are not VFD ready as yours . So, That's why ? :thumbs
    • Informative Informative x 1
    Last edited: Feb 14, 2017
  21. cthiggin

    cthiggin Active Member

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    Hi Speedy,
    Thanks so much. I thought you were using the "inverter duty" motors. My bad...........................looks good friend. Happy for you!

    Tom
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