Survive Tests - Lego Mechanical Principles

I decided to check how effective the popular mechanical principles of Lego mechanics are. Tested with high RPM and high-torque mechanisms to determine which joints are more durable. I hope you will like to know it.

00:00 CV joint
01:48 Schmidt coupling
02:44 Belt drive
04:00 Bevel gears
05:24 Chain drive
06:51 Gear drive