Anyone interested in Mini sirens? I found of this hobby several months ago and have already built my first one. Originally it was supposed to be a 3t22 with dampers, but the motor was not strong enough to pull both rotors, even with hours of sanding and capacitors. I ended up only using one rotor to make a STH-10 siren.
It makes about 108 dB @ 10ft.
Short Alert: IMG_8188.mov - Google Drive
Distance Audio (From about 170 feet and out of line of sight)
I’m currently in the process of building a 1/2 scale ACA Hurricane, which should be about 100 dB @ 100ft.