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The SimFeedback-AC DIY Motion Simulator thread

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

  1. ColinMac

    ColinMac
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    That looks proper impressive. I'm hoping to do it too - although am not practical enough to build them myself, so need to wait for some enterprising soul... hint hint !
     
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  2. HugoB

    HugoB
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    Looks very true to the cars movement in game!

    I can't really tell if there is micro movement going on, it looks like the slow shutter speed of the camera due to low light is swallowing some of the finer details, is that possible?
     
  3. Mascot

    Mascot
    Card-carrying mod whore

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    Very excited to see the progress of these builds! I wasn't getting update alerts from this thread for some reason so there's a lot to absorb.
    Does anyone have concerns about wear on the 3DP parts? I can't work out if there's any friction patches between them and the metal parts.
    Also, what 'grease' are people using? The instructions are non-specific but you do need to be a little careful as some lubricants can attack plastic.

    Ref the cost of the 3DP parts, I was wondering what it would cost to get a bunch of them CNC machined from nylon billet. Anyone looked into this?

    I was also wondering whether there was a motor available somewhere that is already internally geared to drive a piston rather that a rotational shaft, but I'm guessing this has already been exhaustively researched. It would certainly make things one hell of a lot simpler.
     
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  4. anton_Chez

    anton_Chez
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    This is AWESOME. The fact that it's coming together so fast for you Hoi is very encouraging. It's so good to have technically minded people to feed off. I still wouldn't want to do it myself but definitely willing to spend a few bob extra to have access to them.
     
  5. cprelot

    cprelot

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    keep posting progress It's cool! I check everyday! :)
     
  6. RaceNut

    RaceNut

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    Nice work @HoiHman

    I'm really looking forward to seeing this mounted up and in action.:)

    Overall, I hope for some ongoing evolution to take place with any DIY-oriented project; who knows, maybe even a single-controller solution similar to SimuCube (Direct-drive OSW wheels) will emerge in time.

    The D-box controller & PSU box (2-3 actuators) is pretty compact and need to be, especially when combined with tactile-setups that can compete for limited space.

    One somewhat unique aspect of D-box effects is that of slip-effect; it produces a vibration during traction-loss. With some titles (rF2), it occurs with rear traction-loss but, in AC / ACC, it occurs with the front as well and can actually be a very effective grip-loss cue. It also adds a lot of drama to spin's, something I do fairly often! :mad::D

    I know SimVibe has something similar but, it hasn't proven as effective from my testing so, it will be very interesting to see what can be achieved with the DIY solution.:)
     
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  7. HoiHman

    HoiHman
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    Well guys, it will be a while before the whole thing is wired up and ready to go.

    Getting the wiring done is kind of tricky especially since this will be a mobile rig. The motors just have too much cable attached to them for me to work with. But i'm already working on a solution.


    Also....today my 80/20 profiles arrived

    So currently i'm assembling a whole new rig for these babies :D

    The great thing about the 3d printed parts is that as soon as the rig is up and running, i will print a spare of every part and keep it on the shelf. I might even go further a buy a spare bearing and spindle.

    Don't want to be down for weeks like i had with my next level motion v3. That's one of the best things about diy. If stuff breaks, you can fix it yourself.
     
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  8. Mascot

    Mascot
    Card-carrying mod whore

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    I'd hate your shelf to break under the weight of all those spares. Want me to store them for you until you need them..?

    [​IMG]
     
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  9. HoiHman

    HoiHman
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    @RaceNut

    Dean, it looks like these actuators have the ability to simulate rear traction loss to

    This video inspires me to build even faster

     
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  10. HugoB

    HugoB
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    Wow... that looks so fast.. and yet so silent.. I can't tell the difference from what I've seen from D-box footage. Visibly at least, the same amount of very small shakes and bumps are present. And yet I can see the long travel distance being a huge advantage as compared to D-Box 1.5'' actuators. Lets hope a real life comparison will happen soon. If it's as good, or even better, this is the steal of the century.
     
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  11. d69morpwr

    d69morpwr

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    Any thoughts on possibly making some pieces yet? I know you had mentioned pricing some posts back.
     
  12. d69morpwr

    d69morpwr

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    Did I get the video wrong when he showed the rear traction loss working? It looked to me like it just turned the seat on the rig.
     
  13. d69morpwr

    d69morpwr

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    For those of us in the states they can make the same motor in a 110 version also for an additional 33 dollars. That may vary some depending on who you get pricing from.
     
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  14. anton_Chez

    anton_Chez
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    I think the rear traction loss being shown is the vibrations of the motors, rather than the seat moving. He does have a rear traction loss actuator there connected, but it's not powered on in this video. The sound would give it away instantly, the seat belt tensioner and RTL motors are super loud and chirpy compared to the main ones.

    By the way, how SICK was it when he went over the jump. I cannot wait to experience that. The V3 does a good job in rally and I was certainly convinced I was going over jumps in VR, but this would be amazing to feel. The strength of the car hitting the ground and bouncing back up is going to need to be felt to be believed.
     
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  15. Insert Coin

    Insert Coin

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    The guy in the video says traction loss is implemented as a slant to the left or right, so you feel it (mostly) in your shoulders.
     
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  16. d69morpwr

    d69morpwr

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    It was one of the earlier videos where it looked like the whole seat was turning. You must be talking about the same video because those two motors where very loud in it.
     
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  17. anton_Chez

    anton_Chez
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    Cool as. I didn't understand a word of it so I wouldn't know!
     
  18. Mascot

    Mascot
    Card-carrying mod whore

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    The automatic subtitles are hilarious.
     
  19. HugoB

    HugoB
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    I like how when he gets into the seat, the rig doesn’t even move one millimeter, it looks like he is sitting down on a granite stone. That’s 80/20 for you :D
     
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  20. RaceNut

    RaceNut

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    With the D-box system, we feel rear traction being regained (side to side movement on a center pivot; function of the angle) but, it also produces vibrations to represent traction-loss quite effectively. Titles may utilize the effect differently for front & rear, rear only, or none at all so it's not fully supported in all cases.

    It seems to me that this DIY actuator-system should be capable of providing such effects judging by the videos so it may be more a matter of the software if the motors can change direction fast enough. Acceleration matters in such cases but, it's something we need more information on from users who have experience with both systems.

    In any case, if it can't be done through the actuators, then a capable tactile setup can be added to enhance the effect.

    The extra travel is really what's needed imo, especially with Rally because the 1.5" systems just can't do convincing jump-landings, especially without the ability to custom tune effects.

    I do love the vertical motion that these types of systems provide and having almost 4" of range to work with seems like it would be truly amazing. Even with road racing, the extra range can be used for accel & brake force effects quite effectively, especially in VR.:)
     
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