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requires tone generator mod

AG1 to activate siren

i actually had a P-50 in my saves during the LQSR era, but let's just say it was as undetailed as the first 2001-SRNB build.. i remembered it and decided to make a V2. yes i am aware that the pivot of the rotator is wrong. no i will not fix it because i am lazy

The Penetrator-50 (also known as the P-50) was introduced into ACA's lineup in 1980 as a replacement for the Hurricane 130 MKII, boasting incredible sound output without the need for a blower, which means the siren also requires less maintenance. The P-50 shares a rotor and stator with the ACA Cyclone 120 and is essentially a Cyclone 120 flipped on its side with a rotator and projector attached. The Cyclone's already incredible sound output is amplified significantly by the projector, allowing the P-50 to reach a staggering decibel rating of 135 dB at 100 ft, which makes it to this day the loudest electromechanical siren ever made, only beaten in sound output by the engine-driven Chrysler Air Raid Siren.

The P-50's 8/12-port dual tone rotor is 24 1/16 inches in diameter, one of the largest rotors used on a siren. The siren runs on a Doerr fan-cooled 50 hp AC motor, which was only available in 3 ph at 208-230 or 460 V. The P-50 is recommended to be run on 460 V, as the lower voltage models can draw over 100 amps upon startup. The motor is rated for continuous operation, allowing the P-50 to run for long periods of time without damage as has been demonstrated in an infamous incident involving one running for over half an hour.

The P-50 uses a massive, slightly flared fiberglass projector that focuses all of the output in a single direction. It consists of two sections bolted together with a mesh screen in the middle. The screen is mounted near the front of the projector on early units. The P-50 is an incredibly large siren and its projector was advertised as being tall enough for an adult man to stand inside the horn without having to crouch. An eyebolt is attached to the rear housing on all P-50 units for ease of installation.

The P-50 rotates at 3 rpm driven by a chain-drive rotator below the siren, which is contained inside a uniquely shaped housing that has enough clearance for the stand that connects the rotator shaft to the rest of the siren. Depending on the controller used, the P-50 will immediately stop rotating upon the chopper motor shutting off, as it is driven by a separate motor. The rotator will only continue operating while the chopper is coasting if the controller is configured to allow the control of the chopper and rotator independently.

The earliest P-50 units used a different projector design, which had a flat, wider ring around the horn where the inner mesh screen and the outer horn section were bolted. The front horn section was originally much smaller, with the two pieces being bolted near the front of the projector, though this was later changed to using two sections of equal length, bolted in the middle. Most P-50s produced afterward use a large ring in between the two sections where they are bolted together. Most of these early P-50s were painted yellow, while later units were typically painted gray.