Building the World's Weirdest Fan

Summary by Krater

The creator builds an unconventional cooling fan powered by water pressure and magnets, experimenting with linear motors and water pumps before successfully constructing a working bellow system in a custom-built enclosure.

From the video

Answers: Can you use bellows to cool a computer instead of fans?

• bellow cooling fan
• linear motor
• electromagnetic coils
• water-cooled computer components
• mini DC water pumps
• CNC router fabrication

What it concludes

• A linear motor made of permanent magnets and electromagnets can move a mover back and forth, but the motion is jittery, slow, and weak.
• Using computer water cooling components and a water pump can successfully move a magnet inside an acrylic tube, but water pumps have an annoying four-second startup delay.
• Tiny DC water pumps with very few electronics start up instantly and can be placed in series for high head pressure.
• Bellows powered by mini water pumps provide comparable performance to four 140mm fans at full speed while producing a much quieter, repetitive sound.