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Showroom Barry's Racing Sim - IT'S ALIVE (with motorcycle capability (sometime in the future))

Discussion in 'DIY Motion Simulator Projects' started by Barry, Apr 10, 2014.

  1. Barry

    Barry Active Member

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    My Motion Simulator:
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    Hello
    As some of you know I intend to make a racing sim with the additional functionality of being able to turn it into a bike sim. At first I intend to have a 2DoF with traction loss. I will develop it further as the build progresses. I thought I might as well start a thread and keep everything up to date.

    I haven't quite started yet but I am gathering parts for my build.

    Here are my parts so far:
    3 x JRK 12v12
    Windows 7 PC
    3 x Daytona TT25-16 Transducers
    2 sound cards (1 for butt kicker, 1 for normal sound)
    G27 steering wheel, pedals, and gearstick
    HP G4 server powers supplies.

    Parts which need to be resolved.
    Seat
    Base for entire system
    Bike Frame
    Racing seat Frame
    Amplifier for the butt kickers
    Motors

    I'm looking forward to getting the build under way. I'll need lots of help and hope I can create something pretty cool.
    Next up, I need to find some motors possibly within the UK which aren't too expensive. I can get the 25:1 worm drive gearboxes for £20 but just need motors to bolt on.
    I want to make a base to fit the mechanics of how the bike frame will self right and also for the seat and racing sim part to sit on top of.
    I'll also start to design the seat frame as soon as I have a seat. I need to find a cheap bucket seat first.
    • Like Like x 2
  2. Ads Master

    Ads Master

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  3. bsft

    bsft

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    sounds good man
  4. Barry

    Barry Active Member

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    My Motion Simulator:
    3DOF, DC motor, JRK
    JRKs arrived today, and the Daytona Transducers are on the way. :)
  5. Nick Moxley

    Nick Moxley Well-Known Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, JRK
    Awesome build list you got there, I also got Some JRK's today for a buddy's build. I Look forward to seeing your progress. Dont forget to take pics. :)
  6. Barry

    Barry Active Member

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Quick question about motors. Hopefully someone can answer this for me. Buying motors are very expensive from the USA or australia so I'm looking for similar suitable ones in the UK for a reasonable price.

    I can buy MCP 4 25:1 gearboxes here in the UK.
    Is it correct that I need 3600rpm motors to connect to them to give me a good approx output of 150rpm?
    What's the minimum speed I need? Or is faster simply better?
    What sort of torque requirements do I need?

    That should help me find a suitable motor if I know what spec I need.
  7. telfel

    telfel Active Member

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  8. bsft

    bsft

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    @Barry , motor specs will depend on frame design. Normally the 12v big worm gears 25:1 will do it, but it does depend on the frame design in mind. 150 rpm is fine, thats about right on.
  9. Barry

    Barry Active Member

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    Thanks @telfel Those are the guys selling the gearboxes.
    I already have power supplies from HP servers so I was ideally looking for 12V motors. But i'll definitely keep those in mind. What sort of torque do they have?

    The torque part is the thing that confuses me really. I'd like the motots to have a decent amount to cover any eventuallity but I don't want to have to spend crazy money.
  10. bsft

    bsft

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    @Barry again, It depends on frame design and motor placement. If motors are in the right place, 25:1 boxes on motors are fine, if motors are in the wrong place or cannot be mounted to connect at highest point above centre of gravity, you may need bigger gearboxes, like 50:1 or 60:1.
    Short story log, 25:1 usually about 20 nm real world torque at 150 rpm at shaft ish.
    50:1 about 40 nm torque at 75 ish rpm at shaft.
    60:1 about 45 nm (I think) at 60 rpm ish.
    A lever off this will increase speed .
    • Informative Informative x 1
  11. Barry

    Barry Active Member

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Got myself a seat. I also ordered some copper heatsinks for the JRKs.
    I got my welder back from my friend who borrowed it as well.
    The seller who had the Daytona Tranducers let me down. they didn't show up and ebay refunded me. So, I need to find some more of those now.
    I also need to look into wiring up the HP power supplies. I'll probably put a safety switch in it.
    There's also the sticking point of the motors. I haven't found any yet. But no rush.
    I need to decide what I'd like the 3rd DOF to be. I'm not 100% sure yet. I was thinking of a 2Dof with traction loss but now I'm looking at ways of maybe changing it. Pitch and Roll are the most obvious. The last choice is between sway, surge, and yaw.
    Is sway or yaw more realistic?

    [​IMG]
  12. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
    DC motor, Arduino, Motion platform, 6DOF
    You can use the two axis that you have for Pitch, Roll, Sway, Surge and Heave, no need for another axis. They mix together very well.

    Nice seat, makes me wish I were skinny again ;)

    Sorry to hear about the Daytona transducer issue, I have read really good things about them.
  13. Barry

    Barry Active Member

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    Cool, I have 3 JRKs. I thought it'll be good to have an extra one just for some added functions at some stage.
    The seat is pretty soft, it's not carbon backed or anything so it should fit most people.

    I'm sure I'll find more transducers somewhere. They'll turn up again hopefully.
  14. Historiker

    Historiker Dramamine Adict Staff Member Moderator Gold Contributor

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    My Motion Simulator:
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    I am 6'4" with shoulders as wide as a bull, unfortunately my middle is just as big, lol. :D So most seats will not fit my frame.

    You will need another axis for traction loss so the JrK will not go unused, always good to have spares as well.
    • Funny Funny x 1
  15. Barry

    Barry Active Member

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    My Motion Simulator:
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    I plan to run a good ventilation system in my rig but I bought small heatsinks for the JRKs as well.
    Are these too small or should I just stick 2 of them on each one? Or are they still too small? I've seen people running huge things large than the entire JRK with an 80mm fan.

    [​IMG]
    [​IMG]
  16. bsft

    bsft

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    They look ok, I think @eaorobbie runs something about that size. I just go bigger because I am insane....
  17. Barry

    Barry Active Member

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    My Motion Simulator:
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    Motors and gearboxes ordered. They'll take a while to get here but at least they're sorted. :)

    Onwards and upwards.
  18. AceOfSpies

    AceOfSpies Living the Dream!

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    My Motion Simulator:
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    Which motors have you gone for Barry?
  19. Barry

    Barry Active Member

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  20. AceOfSpies

    AceOfSpies Living the Dream!

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    My Motion Simulator:
    3DOF, DC motor, JRK, Motion platform
    The motors I've ordered are the same as @Nick Moxley is using. I've just sent off an email through ebay as I don't believe that they are actually going to arrive. Apparently, if you wait the 8 weeks you're not entitled to you're money back through ebay if they don't arrive! Here's hoping.:(
  21. Barry

    Barry Active Member

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    Keep me informed with how it goes.
    I ordered them because I saw that a couple of other people on here had got some. Fingers crossed.
    • Like Like x 1