1/2 Scale ACA Screamer S1 (Bản Nâng Cấp!)

This is a theoretical 1HP siren for ACA's Screamer series. Uses the core of an ACA Hurricane MKII, now as a vertical omnidirectional naturally aspirated siren. 

Probably would be a Klaxon SS6 competitor. Doubt it would be able to compete with a FS Model 2.

README:

All stls are already in the correct print orientation.  

Motor:
Any 2.8 or 2.9 inch "Samsung" blower motor.  Right now the motor cover only accommodates 2.8" but  will make a 2.9" version later.

I'm using a 250v 8uf capacitor, but i will later add a larger junction box that fits a 10uf!

https://www.amazon.com/gp/product/B0143VJN40

Hardware:
M3x10mm machine screws (13x)

M3x8mm machine screws (8x) (hold hat and junction box)

M3 nut (13x)

M2x6 machine screws (hold the junction box lid on)

LS6590 thrust washer (x2) ---These are the rotor weights.

https://www.amazon.com/dp/B007D3PUV6  (I got them here)

8mm to 8mm 14mm OD 25mm L shaft coupler 

https://www.amazon.com/ZYCST-Aluminium-Coupling-Connector-Airplane/dp/B07QQM831T

M3x5.7 threaded inserts (7x) https://www.amazon.com/dp/B08BCRZZS3

Rotor installation:

Once u have your rotors printed, remove the support material and break off the outside bottom rims.  Take your weights and place them into the bottom of the rotor, with the beveled side up.

To secure the weights, I recommend a couple small beads of super glue along the beveled inside edge of the washer and rotor. 

Put a set screw in both top holes on the shaft coupler.  leave the bottom two screw holes empty.  Then tap the coupler into the rotor from the top with a plastic mallet or plastic screwdriver handle. 

Make sure the set screws are lined up with the access cutouts in the rotor hub.  Don't use a hammer, you can damage the soft aluminum coupler.

Once you have assembled the siren, you should secure the siren with tape or bolt it to a mount (M4 machine screws).  This siren iis compatible with Demetrius's 1/3 scale ACA siren mounts!

If u don't do this, the siren will spin on startup like that Screamer did at Sirencon that one year.