Oh I never knew that. I always thought the Cyclone used a the 12/8 port rotor design from an Allertor. If siren rotor designs were documented & in a library for reference I'd have known earlier because unlike British sirens where the rotors are exposed the ones in Cyclones & other enclosed sirens the rotor designs are hidden from view.
Dang you beat me to it. Well anyways in that video it's basically the same except they introduce the P-50 (Prototype BTW) and the P-10. I will be uploading my video later.