I modeled and 3D printed a fully functional whelen WPS-2801 https://drive.google.com/file/d/1BaQcsyeacuKfvf70fscaTN5T_u5zG1CI/view?usp=drivesdk https://drive.google.com/file/d/1BRK8B_aAlwkWBXnKKiwLAl8RRoFydLqI/view?usp=drivesdk https://drive.google.com/file/d/1DfyGB9pht9yQFvyNIo-bt52EciIY_ya3/view?u...

I have a 3t22 damper plate you could buy

that's just a federal signal STL-10 and a darly STH-10

i saw your video of its first growl
I cant wait for the first full speed run

You need to make it a brake solinoid so you could do yelp

if you want a good toneset you can use my tone set library https://drive.google.com/drive/folders/19pyaO19hNABMK1DwfNkg128w98R0HCes?usp=share_link you just need to give me credit for the sounds the unsorted dual-tone signals are from a siratone and the siratone chime file is called "siratone ch...

when are you going to wind it up on the gas engine for the first time?

I just found out that the multi signal Mobil directo did yelp by using a solenoid operated rotor brake. It would be very cool if jerrylovessirens could build a brake solenoid assembly to make his siren into a BN52-MS-3 instead of just a normal BN52

Do you have a link to the Mobil directo manual by chance?

I’d like to look into there design better

That could be a whelen WS-1000
Here’s a video (this one was updated to digital controls) https://youtu.be/4gy0JbmrQfM