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Amicos 3DOF from 3DPrinter Parts

Discussion in 'DIY Motion Simulator Projects' started by Jon Amico, Jan 26, 2026.

  1. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Cool creative mod ;)

    Jokes aside, as I also have the DD2 you have got me thinking that I should consider cable strain relief.
    • Like Like x 1
  2. Jon Amico

    Jon Amico Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Lol. Yeah. Not sure if its my bad or Fanatec cheap solders or something.. But in Fanatecs defense the wire was rubbing a bit on my old rigs monitors post.. When the FFB was high or a crash thst thing shook... Maybe even more than the new motion rig... It happened a few times before my upgrades but thought I secured it good with Zip ties... I.did do a race tonight with No issues!!

    Back to this... lol My solution..

    https://youtube.com/shorts/o9eaFh-iG7I?si=-CyqIn-tf4gL-uoL

    • Creative Creative x 1
    Last edited: Feb 24, 2026 at 18:56
  3. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Please do detail the parts used, as that is a genuinely creative approach I have not seen before.
    • Like Like x 1
  4. Jon Amico

    Jon Amico Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Its 4 of the 2 inch actuators, 4 Black hinges, a two way switch, wire terminal and wiring.. I cut them from Extrusion Rail and used the rail hardware to mount.. I cut them a little shorter than the powered up Neutral position. With the corner cut off at 45 degrees they can squeeze under the frame.. Felt pads on top..

    Now it ill only drop 1/4 inch or so when powered off.. I had 2 actuators already. Ordered two more to finish the Mod..

    Links to Actuators and Terminal..
    https://a.co/d/0hD7Vi1g
    https://a.co/d/01BetDnH

    3 way 6 pin Toggle
    https://a.co/d/02FdFTi5
    • Useful Useful x 1
    Last edited: Feb 24, 2026 at 00:42
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Added to the FAQs with credit to yourself: https://www.xsimulator.net/community/faq/actuator-chocking-of-back-driven-rigs.417/
    • Friendly Friendly x 1
  6. Jon Amico

    Jon Amico Member Gold Contributor

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    • Like Like x 1
  7. Jon Amico

    Jon Amico Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    • Informative Informative x 1
  8. Jon Amico

    Jon Amico Member Gold Contributor

    Joined:
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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Been Messing around with the Tuning center Settings but not convinced I have them perfect.. Or even close. Manually Entering, Roll + - 23, Pitch + - 19, Heave + - 20, Yaw + - 120, Sway + - 20, Surge + - 25 and Extra 1 (TL) at + - 9

    [​IMG]

    I was trying to lower the Auto Capture Numbers to hopefully feel a little more in certain areas.. But feel I lost more in others..
    Is it just better to do a Start Capture till all the Fields change and do a save? Then lower Traction Loss by Half?
    Is it better to to a capture on clean laps or running curbs, Bumps and crashing to get Higher Values?

    These are with some crashes but not all fields Filled.. Should Numbers bee in the 100's? Yaw is showing 179 and sway 126... Normal?

    [​IMG]

    Having Fun Though.

  9. Jon Amico

    Jon Amico Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    AI Suggests...
    1. Reset: Click "Reset" in the Tuning Center.

    2. The Hot Lap: Click "Start Capture." Drive 2 laps of your favorite track/car combo at 100% pace. Clip a few curbs, but do not crash.

    3. Stop & Save: Click "Stop Capture" and then "Save New Settings."

    4. The "20% Rule": Usually, the captured numbers are still a bit "safe." If the motion feels too weak, manually lower the Max/Min numbers by about 20%.
      • Example: If Sway captured at 20, try setting it to 16.
    5. Traction Loss (Extra1): You mentioned halving it—that's a common tactic. If you want TL to be "snappy" so you can catch a slide, it usually needs a lower number than the other forces. If it captured at 10, try 5 or 6.
    4. Addressing your "100s" Question
    Should Numbers be in the 100's? Yaw is showing 179 and sway 126... Normal?

    No. For a standard car in iRacing, Sway and Surge usually land between 10 and 30. Seeing 126 suggests the "Capture" was running while you were spinning out or the game sent a weird telemetry spike. Those high numbers will make your rig feel "dead."

    Its been Wrong on many things so figured I would ask the Pros.. (Noorbeast) lol
  10. Jon Amico

    Jon Amico Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    After 1.5 laps at Nordschleife fast and bumping curbs this is all I got for Min / Max; Roll 17.51, Pitch 9.37, Heave 4.92, Yaw 179.9, Sway 4.66, Surge 3.02, Extra 1 (Traction Loss) 4.81

    [​IMG]

    All wack..
  11. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Do be aware that refining a motion profile is part personal preference, part honing settings, and part black magic where all that intersects. Refining profiles takes a good amount of time, but does get easier with practice, knowing your rig better and understanding what all of the settings do.

    Please do review the tuning tips in the FAQs as a starting point: https://www.xsimulator.net/community/faq/steps-to-create-a-motion-profile.228/

    Make sure you initially do an axis at a time, disabling the others, then combine and refine.

    Can you please check and confirm that sway is set to lean away from a corner and roll is set the opposite of sway. In the video it looks like the rig leans into a corner: https://www.xsimulator.net/community/faq/which-way-to-set-simtool-axis-movements.230/
    • Informative Informative x 1
  12. Jon Amico

    Jon Amico Member Gold Contributor

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    My Motion Simulator:
    3DOF, DC motor, Arduino
    Damn.. I do think something was backwards and now I messed it all up.. HAHA! I will have to trouble shoot later as its way too shaky/loud in my apartment at 10:30 PM...

    But inside your link says "Both boxes will be either checked or unchecked for surge and pitch, while only one will be checked for sway and the opposite one will be checked for roll." Mine was not like that... I made it like that but something still might be backwards! Its loud and shaky!!

    The Slider for Sway and roll in output testing do the same thing on the rig even though the Axis assignments are opposite Dir.

    My brain will understand it one of these days.... But off to sleep and a long day of work... Thanks for the links Boss!!!
    • Like Like x 1
  13. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    What DIR boxes need to be checked, or not, depends on how your rig is wired by default.

    As per the provided link this is what SimTools expects in terms of axis configuration, but it is no big deal to accommodate alternate configurations, you just need to keep that in mind when adjusting to suit the need to consider other standardised recommendations when making adjustments: https://www.xsimulator.net/community/faq/which-way-to-set-simtool-axis-movements.230/