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Actuator chocking of back driven rigs

When a motor can't hold the rig mass when unpowered the motors are being 'back driven'.

Depending on design that may also take pots outside their range when unpowered.

There are low tech resolutions, where the likes of @Nick Moxley use a pivoting chock, that can be swung into place to hold the rig when not powered: https://www.xsimulator.net/community/threads/2dof-static-seat-when-not-in-use.5996/#post-64074

And at the other end of the innovative scale @Jon Amico came up with this novel actuator approach to chocking a rig that can be back driven when unpowered: https://www.xsimulator.net/communit...from-3dprinter-parts.19829/page-4#post-260244