Hello chaps, first post here, the usual desperate one 🙂
I´m making a manual wheelchair alike vehicle purely with the in-build physics.
The main wheels are attached to the vehicle body by a 6DOFJoint node allowing only for X rotation.
Whatever torque or angular rotation or anything I add to its X rotation will work properly till it aligns with the -180/180 angles (though I'm using radians), then it won't quite spin, also on the perpendicular angles, it speeds more than expected.
I suspected that the parent rotation is somehow not being accounted when rolling the wheel.
Any ideas on what I'm doing wrong? I have tried quite a few options all getting to the same results 🙁

  • FUED replied to this.

    Some self reply 😃....
    Solved the issue, not quite like I wanted but within use.
    The rigid body parts were attached with the 6DOF Joint and it seemed it kept a rotation orientation "freezed" and not following its parents one.
    I substituted that for the hinge joint and that one worked as long as I use the MOTOR parameters.
    The same could have worked on the 6DOF but I did not try that path, will check later.
    Also, beware when attaching multiple hinge joints into a system, they are harder to physic balance. The outcome from 6DOF seems much more realistic on mass distribution and effect.

    5 days later

    FUED A little add-on. While the hinge joint works with motors, it seems like a joint that expects a static body on one end. A system made with it won't distribute force as it should so you would have to code that bit. Getting back to 6dof, it works fine with motors and has no orientation problems and does distribute force as it should, so I ended up on that path to solve my issues.