24:08

Testing 8 Innovative New Boat Propeller Designs

38:07

I Found the Most Efficient Propeller Design - Competition Ep. 3

5:03

I made a lunar rover from an RC car | #1 (4K UHD) | @imrc

18:47

Weird Train Airplane experiment

11:36

The Genius of Cycloidal Propellers: Future of Flight?

20:13

This NEW Propeller Gave Us Insane Results! | Whisper Sling Prop Test

13:50

e-bike mecânica

12:05

Alternative to bearings for tiny robots