[OLD] 3 Port Air Raid Siren (95.8db at 3ft)

A siren I designed a bit a go after I got a 555 motor capable of spinning up to around 10,000 RPM. It is a very simple model, but thought I would post it in case anyone is interested in it. This siren will also work with any other generic 540/550/555 motor as long as the screw mounts are in the same position (it is a pretty standard width). It measured 95.8 db at 3 feet away, spinning at around 10,000 RPM (500hz sound). Assembly is pretty self-explanatory. Just be careful as the tip velocity of the chopper at these speeds is greater than 100MPH, and you don't want that hitting your finger!

7/1/2026: Some day this will get a V2. I know a lot of you probably want it right now, and I would too if it wasn't for me cycling through like 10 different interests throughout the year. As for the update I had here before, the Cyclone 120 was fully printed but never uploaded due to many issues in the design hindering the ease of assembly, support waste, and consistent functionality.