Скачать или смотреть I Tried to Break Mach 1 With a 3D Printed Gearbox

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Can a fully 3D-printed gearbox spin an object fast enough to approach the speed of sound?

In this video, I push my over-engineered propeller launcher further than ever before. With an extreme gear ratio, custom RPM measurement, and multiple power setups — including dual-hand cranking and a drill — the objective is simple:

Spin faster than seems mechanically possible… without destroying the machine.

This attempt quickly turns into a battle against vibration, structural limits, and physics itself. Components fail, adapters break, discs explode — but each test gets us closer to the true performance ceiling of the launcher. RPMs over 20 000 are reached!

Key questions:

How fast can a human-powered gearbox really go?

What RPM is needed to approach Mach speeds?

What fails first — the object… or the gearbox?

Watch to the end to see the highest RPM ever achieved on this build.

👇 Comment your guess: How close do you think we got to the speed of sound?

Chapters
00:00 The challenge
00:25 The gearbox
00:56 Baseline run
01:18 More power
02:40 Even more power
04:08 Tune gear ratio
04:47 Ultimate run

#3dprinting #engineering #gearbox #mechanical #speed #diyengineering #mach1 #sonicboom #rpm 1#drill