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Showroom 3070W 6DOF Seat Mover (WIP Surge_Sway table)

Discussion in 'DIY Motion Simulator Projects' started by Pit, Mar 5, 2014.

  1. Pit

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

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    Thanks @Ben V, the bezels were the main reason why I decided to go the projector route. A curved screen would be better but the needed software is expensive and the image quality (in my case) less good.
  2. christian

    christian Member

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  3. Pit

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

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    I hope this paint fits your request, a detailed video will be taken soon.
    Neues Dokument 5_1.jpg
    Please keep in mind, this design is not mentioned for flight simulation due to the offset. For us racers the offset is negligible because we do not need much lifting.

    PS2: the distance between the bottom of the seat >-> joint >-> platform where the joint is mounted should be as little as possible.

    PS3: If needed, a spring can be added under the platform if the heave motor (the left one) is too weak.
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    Last edited: May 15, 2015
  4. Bobsyouruncle187

    Bobsyouruncle187 New Member

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    My Motion Simulator:
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    Regarding PS3, is the heave motor on the left, holding the seat in position during the time here is no heave movement (i.e is it under constant stress)

    or is the pivot (green circle in the middle of the pic) only allowing movement upwards, so it locks when it is at the horizontal position and the heave motor rests? (Sorry if it confusing, I added a pic to try to clarify the question)
    query.jpg
  5. Pit

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

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    The heave motor is holding the seat all the time, yes. If you will use 300W motors they will fail probably, or you use a longer lever to reduce the weight on the motor itself. NTL much of the weight will be reduced by the middle joint and by the motors at the back.
    • Like Like x 1
  6. thechemist

    thechemist New Member

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    Do you think this winch motor would be strong enough for a behind the seat 5DOF semi compact sim that can support 100kg person plus peripherals attached to the seat?

    Ramsey 12v Winch Motor 2 Ball Bearings 6HP MBJ4409 MBJ4410
    Unit Type: Alternator
    Voltage: 12V
    Free running Speed: 2100 RPM
    Rotation: BI
    KW: 6.0 HP
  7. Pit

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

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    Hi @thechemist already responded in your thread. The afternoon I am back for more information.
  8. thechemist

    thechemist New Member

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    Thanks, I have also posted few more motors in the thread if you can take a look at those and let me know what you think.
  9. Pit

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

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    The entire rig taken on video without comments so far:
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  10. SeatTime

    SeatTime Well-Known Member

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    Are you sure you can't travel back in time in that Tardis. upload_2015-5-17_19-58-14.jpeg . I mean SIM :).
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  11. speedy

    speedy Well-Known Member

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    That documentary video should take the Oskar Award of " Simulator Of The Month" ...

    995-filmpreis-oskar-1011.jpg
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  12. Ben V

    Ben V Member

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    @Pit I'm planning to build a 2DOF seat mover using winch motors for my first motion sim. Do you know about what your gear ratio worked out to be?
  13. Pit

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

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    Hi @Ben V the gear ratio of my winches are not known but the rpm: 23. That means a relatively slow turn, but winches are very responsively. Due to the strong motors they produce a big amount of Nm (750W max would be equivalent to 1PS) , so you can compensate the lower turning speed by using longer levers. In my case my levers are 13cm long - already too long so I had to reduce the max. power (= turning speed) because they became too fast at least.

    Using winches you have to keep in mind:

    1. winches are louder than other industrial gear HQ motors and there are some actions to be taken to reduce the noise.
    2. winches are heavy
    3. winches need big PSUs and each winch atleast one PSU
    4. my type of winches are offered at every corner - if one winch will fail also no problem to get any replacement parts.
    5. if you are lazy (like I am sometimes ;) you can use a handlebar stem onto the pulley. The diameter (31.8mm) of the pulley fits exactly to the stem of a mountain bike.
    IMG_20150531_084628.jpg
    PS: this lever is shorter as the seat levers at the back, this winch is to be used for a separate heave which does not need big moves.
    6. you'll need a strong motor driver, the jrks are too weak here, each winch needs two MotoMonster working in Dual Half Mode.
    • Informative Informative x 1
    Last edited: May 31, 2015
  14. Ben V

    Ben V Member

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    Thanks @Pit.

    I'm attempting to completely remove the gear train from the winches mainly over concern for the noise level.

    If you're running a 13cm lever on a 23 rpm winch output and turning the speed down, I think I've seriously overestimated the speed I need for a simulator. What I've currently got is a pair of 28:1 ratio steering boxes from an auto wrecker that I was planning to use straight off the winch motor.

    To drive the motors, I've ordered up a Sabertooth 2x60 and a Kangaroo x2 controller based on a suggestion by @eaorobbie in another thread. I figured the large included heatsink and fan would help with long term reliability of the driver.

    If my steering boxes don't work out, that handlebar stem sounds like a great plan, I'm an avid mountain biker and already have a couple in the basement.

    Well, I don't mean to hijack your thread, so I'd better be starting my own build thread now!
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  15. Pit

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

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    no problem, but opening an own thread is always a great idea :) If you have any questions do not hesitate and ask.
  16. fzxj520

    fzxj520 Member

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    The only drawback, cable clutter, insecurity:thumbs
  17. Pit

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

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    You are talking about spaghetti syndrome? Where?
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  18. fzxj520

    fzxj520 Member

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    20150602140506.jpg
    Reasonable wiring should be a good habit
    Such as: high voltage and low voltage separately to avoid interference
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    Last edited: Jun 2, 2015
  19. Pit

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

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    first I have no interference. Second from time to time I have to change things and parts, why making it too complicated? If something would fail I would have to open the case, rewire all, loosen the fixings atc.
    You can do it better :)
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  20. Martin van Hagen

    Martin van Hagen not trying brings you nothing! SimAxe Beta Tester Gold Contributor

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    @fzxj520 the left image is clearly an audio tube amplifier of some sort. However I do agree that wire/cable dressing is key in safety and aesthetics! Form follows function....:grin
    @Pit if it is well designed the access for maintenance will be incorporated in the final product. If still in the "test Betty phase" a quick link from A to B often suffice to feed the curiosity if the idea works.....:!