3D Printing a Functional Wankel Engine
3DprintedLife 3DprintedLife
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 Published On Mar 07, 2021

Meet my FDM 3D printed, compressed air powered wankel/rotary engine. This project was a huge challenge which pushed my mechanical design skills to the max, but the result is really neat. Even if it may be less efficient than just about any other compressed air engine around.

The engine relies almost entirely on FDM printed parts with minimal post-processing after printing. O-rings are attached to some surfaces to act as sealing surfaces and other smaller o-rings are embedded into the engine housing during assembly for the valves. The engine runs on compressed air, minimum of about 40psi. All of the clips in this video used only 1L of air for the supply, a bigger tank would result in far longer run times.

What did you think of the new video style, with more of an engineering and education focus than previously? Please let me know in the comments!

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The project is open-sourced!
https://github.com/DDeGonge/AirWankelEngine

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Chapters
Intro: 0:00
Background: 0:43
Early Versions: 2:15
How It Works: 2:58
Later Versions: 4:40
First Success! 5:05
Fixing the Piston: 6:47
Newest Failures: 8:12
Final Version: 9:19
IT WORKS: 10:07
Gross: 10:45
Engine Testing: 11:23
Come at me Tom: 11:54
Outro: 12:58

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