Schmidt Style Coupling (parametric)

This is a mechanism to transmit rotation power between two axles that can move relative to one another but stay parallel at all times. It can take higher loads than a doublecardan joint.

I need to ad a clearance parameter for the pins. The first test-print was stuck.
**Generally this design needs a lot of improvement. Expect problems.**

**Known issues:**
★ short pins are too stiff
★ tolerances are too thigh
★ parts are too thick

it was inspired by this:
http://www.thingiverse.com/thing:14060

and it is intended as a drive for my moineau pump model
http://www.thingiverse.com/thing:28237

For the connector pieces the optimal length is chosen automatically.