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Question rFactor 2 adding two more extra axises, possible please

Discussion in 'SimTools Plugins' started by joe extraknow, Jun 1, 2019.

  1. joe extraknow

    joe extraknow Member Gold Contributor

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    My Motion Simulator:
    3DOF
    My rig has two front actuators for chassis 2dof-motion (chassis roll and pitch), with which is also fed heave data from CG vertical-g (Simtool) I believe. This maybe questionable. I checked rF2 telemetry data of LF_rideHeight and RF_rideHeight, and then I did 2nd derivatives to obtain the LF_vertical-g and RF_vertical-g data and plot them to compare the CG vertical-g telemetry data, there are quite diff, though.
    I will think it makes a sense to use calculated LF_vertical-g and RF_vertical-g values to feed the front two actuators for heave, respectively. I wonder if possible to add two extra axises for these on rF2.

    thanks, Joe
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    Just trying to clarify what you mean, as you have not posted your settings (which would be really helpful if you did).

    You have a 2DOF, operating as a foot mount (front) correct?

    You already use roll, pitch and heave, but what about surge and sway?

    If I get what you mean then you are talking about the shock positions left and right, correct? If so then it would seem to me that it is the chassis rather than shock position that matters, but I may have misunderstood and if so can you please clarify further.
  3. joe extraknow

    joe extraknow Member Gold Contributor

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    My Motion Simulator:
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    Yes, two actuators on front mounted to move the chassis in 2dof.
    I try to stay with chassis motion data (not the suspension, or shock position or other data) since the actuators are mounted on the chassis to move the chassis.
    Note: the rideHeight is the chassis motion data though, which is vertical spatial motion data, or called Heave in this regard. The definition of rideHeight is a distance between ground and bottom a chassis. rF2 offers 4 corners' rideHeight telemetry data. My seat, pedals, wheel all mounted on the chassis though. So All I need is the chassis motion data, not others. The Roll/Pitch/Surge seems fine with me. I have no question on these.
    My concern is the heave data applied on front two actuators. I try to get a good feel for chassis bounce, bump, and vibration, I have a concern how realistic data are in this case.
    I believe SimTool/rF2 plugin use Center Gravity vertical-g for heave. I am asking if it is possible feed front two actuators with front left and right vertical-g, respectively, with calculated LF_vertical-g and RF_vertical-g values.

    I hope this clarify my question.
  4. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    In my view the user experience is driven by what the chassis does, and with a good motion profile, for a 2DOF, SimTools takes all of your settings for sway, surge, heave, roll and pitch and mixes them on the fly.

    So in that regard the shock position is already accounted for in the chassis motion, as defined by the 6DOF, unless what you mean is that what you are looking for is a very fast movement with an associated (undefined?) frequency, though even there to some extent that is a culmination of different axis movement and likely to have wildly different amplitude (per 4 shock positions) unless averaged, which ultimately is how I consider such vibrations are actually perceived by the user.