I really thought this would fly well

Summary by Krater

An engineer attempts to build a helicopter modeled after a spinning toy copter using a CNC machine and metalworking tools. Despite various physics challenges such as drag and precession, the final test flight crashes, setting up a part two.

From the video

Answers: Can you build a helicopter modeled after a spinning toy copter?

• helicopter mechanics
• aerodynamics
• precession
• CNC machining
• physics of flight

What it concludes

• Spinning a helicopter propeller 10 times faster results in about 100 times more drag.
• A dual-flywheel design with counter-rotating wheels successfully cancels out precession twisting forces.
• Adding control surfaces using the blade's airflow can help stabilize and control the helicopter's spinning body.
• Reducing system friction and increasing blade length and leverage are necessary to generate enough lift and torque for flight.