April 9, 2026
Description
A counter rotating fan assembly, powered by two Noctua A12x25 motor hubs.
Submitted to Major Hardware's FanShowDown, on YouTube, in response to the comments on my original Jet Stream:
https://www.youtube.com/watch?v=fmd1i8qDkwI&list=PLHLn2U7i45M_EXIsnqUyI-nqCCk-wfCU9&index=87
To size the outer diameter of the spiral fan, I used 3M pressure sensitive adhesive (PSA) backed 150 grit sand paper (.3mm/.012" thick), stuck to the frame.
The aggressive spiral tends to creep with the flex of rotation, requiring periodic sanding to 1000 RPM sessions to prevent rubbing.
License:
Creative Commons - Attribution - Share Alike
Prot0typ1cal
