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DIY G-Seat

Discussion in 'DIY Motion Simulator Projects' started by early_m, Feb 23, 2017.

  1. early_m

    early_m Active Member

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    Of course I've seen your gseat @SeatTime, it was my main inspiration! I hadnt seen your office chair version though. Looks like it works very well. I could have make things a LOT easier on myself if I wasnt so attached to my current office chair. Its not really suitable for a gseat but Ive had it for so long its molded to me and find it very comfy day to day.
    I love your current version with it sunk into a race seat. Who knows, one day the trusty office chair may have to go and I'll be diving back into your thread.
    Thanks and I'll be back with an update once the base is built
  2. ferslash

    ferslash Active Member

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    i saw servo up to 60 kg.... how far in terms of torque would this servos be vs wiper motors? anybody???

    best regards

    fer
  3. early_m

    early_m Active Member

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    Wow thats a beasty servo! Any idea how much it costs?
    60kgcm is 5.88Nm. Maybe similar to wiper motor? Depends which model. Found one on ebay for a vauxhall astra rated at 5.5Nm. Which is why they're probably not used that much for full size motion sims. The more commonly used worm drive motors from the likes of motion dynamics are rated at 20Nm
  4. Robdog

    Robdog Member

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    Hi. I like what you have done so far, especially with the side paddles. I would imagine having the force applied laterally like that would be significantly better at simulating cornering forces.

    What are you using for a power supply? I am having difficulty finding something with that sort of current output.
  5. MarkusB

    MarkusB Active Member Gold Contributor

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    My Motion Simulator:
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    Many here are using server PSUs, either a single one or more. They don't cost that much on ebay.
    I have a 1000W PSU for driving four 12V/200W motors.
    • Informative Informative x 1
  6. early_m

    early_m Active Member

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    Thanks for the comment - yes the side panels really do give a better sense of cornering. With just back panels the force isn't applied in the correct location in order to simulate sway. So definitely worth the extra servos.
    As for power, I am using an AC/DC 12V 10amp supply (like this one http://www.ebay.co.uk/itm/DC-12V-10...088712?hash=item2ca2744088:g:4EsAAOSw32lYuIoe) into a DC/DC 6V 20amp (like this one ).
    The servos can draw a lot of current under load, so important to have enough.
    Like @MarkusB stated, many use modded server PSU's, but thats for big boy current usages when using high torque motors - overkill for servos usage. Allow 2amps per servo to be on the safe side.
    • Informative Informative x 3
  7. early_m

    early_m Active Member

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    Finally found the time to build the base and complete this thing!

    Firstly, finalised the back. Moved the side panels out a little to give some extra room (was quite snug) and added foam at the contact point:

    image1.JPG

    Side view:

    image2.JPG

    Then onto the base. Only wanted to use 2 servos each side so I have positioned the paddles under the thighs only. This massively reduces the force on them as most of your weight goes down through your backside:

    IMG_3169.JPG

    I also braced under the paddles to stop them going past the horizontal plane. Again, takes unnecessary force off the servos. Note the slotted angle bracket required in order to achieve this:

    IMG_3170.JPG

    Added some 1" foam to make it nice and comfy:

    IMG_3179.JPG

    The finished setup:

    image3.JPG

    Video of it in action:



    Might smarten it up a little, but apart from that I'll be leaving it there for now as I'm very happy with the way it feels.

    The end goal would be to implement the idea into a racing office, a bit like @SeatTime 's gseat.
    • Like Like x 9
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  8. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    Very nice!

    Are your side paddles driven simultaneously with back paddles?
  9. early_m

    early_m Active Member

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    Thanks, they are an independent axis. The back paddles deal mostly with surge but also a little sway. Hope that's what you meant.
    • Informative Informative x 1
  10. Boomslangnz

    Boomslangnz Active Member SimAxe Beta Tester Gold Contributor

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    awesome stuff mate!
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  11. MarkusB

    MarkusB Active Member Gold Contributor

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    Nice work, @early_m. I like the idea with the slotted angles for connecting the servo motors. It not only eliminates the non-desired half of their movement, but it also decouples them from each other.
    • Agree Agree x 1
  12. alexdixey

    alexdixey Member

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    My Motion Simulator:
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    Nice Double motion flap Idea..
    Its, almost suitcase portable..
    I just braced the flap side at an angle.
    For increased immersion I added a vibrating seat pad:
    https://www.gametrix.eu/products/gametrix-kw-908-jetseat-turbojet
    Took the thing apart and embedded the motors in the seat cushion of A BMW seat maintaining the ergonomics; this pad Doubles up the vibration feedback from the bass shakers.
    I full recommend it.
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  13. hideki

    hideki Member

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    Hello Alexdixey . do you have any foto of the process of tha jeat seat inside the BMW seat? Its an excelent idea and I am not sure is that easy. I bought it a few months ago and the profuct is ok but too slippery on my Sparco . Many thanks
  14. alexdixey

    alexdixey Member

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    Hideki,
    You're right the padding is not that great, I tore it up but kept the motors & controller. Then placed the motors into the BMW seat foam at so they are flush with the surface. and put the leather like upholstery over it. It feels great plus I still have the metal seat base with 4 axis motors that come with it... A all 12 volt with the controller box.
    The insurrace junkyard are filled with hi.- end cars that have been totaled.. Electric passenger seats a are in good condition, and they are a bargain!
    There are some pictures, here:

    https://www.xsimulator.net/community/threads/g-seat.10809/
    • Like Like x 1
  15. Pinello

    Pinello New Member

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    Very interesting work.

    For the mechanical linkages, is that RC-model parts? Do you have a good source/link for that, maybe Ebay?
  16. early_m

    early_m Active Member

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  17. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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  18. early_m

    early_m Active Member

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    thanks @yobuddy. new baby forces end of play but will be implementing the design into a gaming chair (hopefully) in the near future
  19. Henrik

    Henrik New Member

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    This is an very impressive and inspiring build!
    I am thinking of copying some of it, if its ok? :)
  20. noorbeast

    noorbeast VR - The Next Generation Staff Member Moderator

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    We all build on the shoulders of others.

    You can copy ideas according to the terms that they are posted under, which in most cases is under the Creative Commons Attribution-ShareAlike 3.0 Unported license, as that is stipulated in the Xsimulator Terms of Service for posts: https://www.xsimulator.net/terms-of-service/

    There are some exceptions, for example you will note in my signature that anything I have posted is explicitly posted under the Creative Commons - Attribution-NonCommercial 4.0 International (CC BY-NC 4.0,) which precludes commercial use but encourages sharing and building on for non-commercial purposes.

    Links to applications that may get posted will be covered by whatever license applies to them.

    Irrespective of all that it is really good that you asked @early_m and let him no how much you appreciate his work.
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