I have designed this support for my Carpuride W702 Android auto screen for my motorbike.
It is designed for 12mm bar, and I believe safe enough to hold the screen!
You will need :
4 screw 3 x 10mm
2 screw 4 x 20mm
2 locknuts 4mm
1 washer for the original 4mm screw of the RAM ball.

Take care of the original support orientation, if needed rotate it by 90° in which case take care of the thermal pad position...

Parts have to be printed flat.
Front part have to lay on the bottom with support for the 2 locknut holes. There is a slight slope on the top to allow good pinching on the tube
Back part need support under the half tube inprint.