Better center stick

This is the new design for the center stick.  It's "tube-in-tube".  The bottom left goes to the center stick. The top/right goes aft to the mixer.  On the bottom/left; the outer tube is elevator, inner push-pull is aileron.  After the junction, it swaps.  On the top/right tubes, outer torsion tube is aileron, inner is push-pull and elevator.

I also made these bracket that fit outside a 1" PVC pipe so I can test the concept.

https://www.thingiverse.com/thing:3385582






And the fuselage bracket which will hold the ball bearings and align the outer tubes.  I want to test how it will all work together.

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