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The SimFeedback-AC DIY Motion Simulator thread

Discussion in 'Sim Racing Hardware' started by sjb266, Sep 17, 2018.

  1. diablo2112

    diablo2112
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    Fine by me, and good luck. It's certainly helpful to have many of the parts already sourced and in-hand.
     
  2. GomezRacing

    GomezRacing

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    Thanks. Already have had several people inquire within 10 minutes of my posting. Surprised actually.
     
  3. Michal Burisin

    Michal Burisin

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    I'm building rack with servo controllers like this:

    upload_2019-9-14_0-15-5.png

    I will be using 3xSFX shield, can I place them in the rack or should I place the Arduinos as far as possible from all the power lines / controllers?

    I have 1 m long data cables, so probably most far I could get is on top of the rack.

    However I would prefer to keep it inside rack, but I'm not sure if it wouldn't add to EMI issues lot of people are having (especially with VR).
     
  4. UncleGit

    UncleGit

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    I'm only running 4 controllers - but so far no issues with having the shield inside the box of zappy potential death.

    One thing of note is I'm using an active USB extension to connect to my PC since the length limits to the passive extension was too short for the run I need.
     
  5. GomezRacing

    GomezRacing

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    Wow I got 5 offers within 1 hour! Sold at FULL price! Popcorn for dinner! lol ;-)
     
  6. diablo2112

    diablo2112
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    Congratulations! Perhaps the community isn't nearly as hung-up on the idea that other enthusiasts can sell parts and partially-assembled SFX-100 kits, and at whatever price the buyer and seller agree on. If so, that's quite the change from the past few weeks and months.
     
    Last edited: Sep 14, 2019
    • Agree Agree x 1
  7. Ringorian

    Ringorian

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    @diablo2112 If Someone sells his own, one time , is different than offering them in kits for Sale . Nothing changed ..
    The community just decides with there behaviour if other DIY Projects are being released that style or if they stay where they are .. somewhere in the basement , used by 3-4 people .. seen this in other not simracing related DIY projects before ...
    Its DIY not I do it for you
     
    Last edited: Sep 14, 2019
    • Agree Agree x 1
  8. BluePotato00

    BluePotato00

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    If a partial kit can sell for $1,700 (and probably more given the quantity of interested buyers he had), I am even more appreciative of @saxxon66 and the team for having not commercialized this. It would have made my dream motion rig much more expensive than it was. The SFX-100 team has an opportunity to earn some decent profits here and instead they share the plans and let us build it ourselves at a lower cost!
    Thank you!
     
    • Agree Agree x 7
    • Like Like x 1
  9. anton_Chez

    anton_Chez
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    It's not all roses, though. A commercial venture would involve start up costs, liability, overheads, significant time and financial investment, red tape, etc etc, and SOMEONE would have to be responsible for THAT coil whine.

    It's all relative. It might not have been nearly as successful as it was had it been pursued as a business. There's always two sides to it. It still would have been a compelling product but everything is easy when there are no consequences, responsibility and investment for something to get off the ground. I've been training for nearly 20 years, and could probably coach people on the side here and there for a couple of bucks for my time. If I had to leave my job / sell my current business and venture off on my own into something that was once a hobby, it becomes A LOT more complicated.

    But fully understand your point, nonetheless.
     
    • Like Like x 2
    • Agree Agree x 1
  10. GFJunky

    GFJunky

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    Yeah pretty sure the EMI/EMC issues would require some serious work if a company wanted to sell it as a product that meets EU regulations. I'm amazed companies get away with selling Simucube based wheels as well!
     
    • Agree Agree x 3
  11. papasqueeze

    papasqueeze

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    Hi all

    Im new to the forum

    I've been looking around for motion rigs for a while and stumbled across this project

    Is it ok to post questions about hardware here?

    Mainly be about the electrical side as I'm noob with circuits and stuff, the build side I'm ok with just would need advice along the way

    Is anyone based near Sheffield UK who has made this project so I could maybe see a working rig

    Tia
     
  12. Prototype_

    Prototype_

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    DRAFT 3 REVISION

    Form factor now much more compact as a result of lowering the entire system.
    I think this is getting close.

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
    • Like Like x 2
  13. ThugUK

    ThugUK

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    I approve
    Mine is 1500mm long, where yours is 1400mm.
    What this means is that I put my rear actuators further back getting 1000mm between front and rear (yours are 890mm).
    This also means my weight is more central (more equal between front and rear) and there is no chance of hitting elbows on the rears.

    [​IMG]
     
    Last edited: Sep 14, 2019
    • Like Like x 2
  14. Prototype_

    Prototype_

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    @ThugUK Nice setup !
    ---------------------

    So, chaps, if Im understanding correctly:

    ---------------------
    1. The IDEAL is to have the H-point dead center between the actuators.
    2. Its ALSO important to get the actuators into as SQUARE a configuration as possible.

    ---------------------

    So I guess nobody has done this :-D as its kinda impractical to have a super wide rig. Or has somebody?
    And if you pulled the actuators into a smaller square confg, they will start getting in the way.

    [​IMG]

    In the case of my current design, (the width of the rig is 700mm), so moving the front actuators and rear actuators into a 700 x 700 mm config would most likely interfere with the steering setup. So that not feasible.

    By making the rig 890mm wide, (890 x 890 mm) that would probably be a better situation, but then the rig becomes kinda wide. But not too bad? Might be worth exploring?
    Still, it wouldn't be easy to get the H-Point centered as the front actuators would have to move backwards closer to the driver.

    Just spitballing here ... trying to understand what the ideal is ...
     
    • Like Like x 2
  15. ThugUK

    ThugUK

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    The best thing to do is set up your rig with EVERYTHING on except your actuators. Place it onto a broom shank and sit in it. Get a friend to roll it on the broom shank until perfectly balanced. Then use that as the central point for your actuators.

    In the real world your design will work just fine as it is and there is no need at all to do this.

    However I did notice a difference when I was better balanced, although someone else may not.

    Don’t over think it, but do listen to other people as it may save you a little time/money.
     
  16. diablo2112

    diablo2112
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    This looks really, really nice. Great job and additions. My one suggestion is consider a triangular brace - 40x40mm from the front edge of the wheel deck down to the front left and right corners. I did this on my rig, and it substantially improves the rigidity of the wheel deck. Here's a pic, to illustrate. Great job again.

    [​IMG]
     
    • Like Like x 2
  17. Prototype_

    Prototype_

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    @diablo2112 Oh I like that! Yeah definitely will add that in. Thanks!
     
  18. diablo2112

    diablo2112
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    Perhaps one last suggestion. Your monitor is mounted fairly far forward. I find I like it mounted as close to my wheel as I can get it. This improves your peripheral vision with an ultrawide, and looks super. Again, here's a few pics to show how close you can get the monitor. The limiting factor is enough room for your hands/knuckles so they don't rub the screen.

    [​IMG]

    [​IMG]

    [​IMG]
     
    Last edited: Sep 15, 2019
    • Like Like x 2
  19. C64

    C64

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    I don’t think you need to get the c of g in the middle of the actuators, it just has to be within the 4 actuators... which it is bound to be. Because the rig only moves vertically, longitudinal c of g is irrelevant and will have no effect on its operation.
     
    • Agree Agree x 1
  20. ThugUK

    ThugUK

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    Hence me saying 'in the real world your design will work just fine as it is'.
    I know its not the type of mover that requires balancing (like the DOFreality) but by balancing it out it will put equal amounts of stress on each actuator. Whether this will make a difference is open to debate.
    Before I moved everything forward I was conscious that my rears were carrying more weight than the front (could this effect the speed if they are working harder, who knows), and when I moved things forward I 'felt' as though it worked better (although this could very well be a placebo effect).
     
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