Spinning Lego Propellers

Thrust testing some Lego propellers and rotor blades.
At the end I try to get a tandem helicopter build (externally powered) up in the air. Enjoy!

Tested parts:
-Propeller 2 Blade 9 Diameter [2952]
https://www.bricklink.com/v2/catalog/catalogitem.page?P=2952
-Technic Rotor Blade Large with 3L Liftarm Thick and Black Rubber Tip [99013pb01]
https://www.bricklink.com/v2/catalog/catalogitem.page?P=99013pb01
-Propeller 1 Blade 14L with Two Pin Holes and Four Axles [89509]
https://www.bricklink.com/v2/catalog/catalogitem.page?P=89509

Próximo episódio

S01E22 - How To Make a Lego Man Fly