Universal Joint Revisited

[ZooHead]

Once again I'm playing with the universal joint and I made some
animations to illustrate the path each end of the cross piece follows.

 

[ZooHead]

When originally invented, it took a century to figure out that the speed of
the output oscillates, advancing and retarding rpms every quarter rotation.

With each yoke having it's own cross bar, you can use Cheetah to measure
the angle variation from 90 degrees, and alter the output rotation accordingly.

For visual purposes I see no reason for this correction, but Cheetah can be used for this kind of measurement.

 

[ZooHead]

Just for fun here's a constant velocity joint with a sliding linkage.

 

[Helmut]

For those of unchaste associations to engineering imagery:
This looks like hexagonal robotic sex.
Yuk! Porn! Disgusting!

Not surprisingly, I live in the city of Prof. Sigmund Freud and pass his consulting rooms (at a safe distance) quite frequently.