Published on December 30, 2017
A kinetic scupture.
Input: blue shaft.
Large gear to which is fixed the sphere has revolute joint with the blue shaft. See the similar joint in Drawing a spherical helix :
The sphere is driven via planetary bevel gear drive and spur gear one so it rotates around vertical and horizontal axes at the same time.
It is possible to hide the rim gear by attaching two flexible bands to the sphere groove walls.
STEP files of this video:
Inventor files:
