1/3 Scale Federal Signal 3T22A

This is a 1/3 Scale 3T22A (or 2T22A) with WORKING DAMPERS!!! This siren was a collaboration between Demetrius P. (YourAverageMODude145) and I.

This siren weighs approximately 9 pounds!

Thank you soo much for your help, Demetrius! Your modified Edaan B core may be dead, but now you can Hi-Lo again!!!!

README:

All stls are already in the correct print orientation.  

The only parts that need to be printed with supports are the stators, and Demetrius's Marathon motor covers.

Credit to Demetrius for the stand!
https://www.printables.com/model/1222468-13rd-scale-mini-xt22-stand

Supports:

Overhang Angle: 80 degrees

Support type: Tree

Cooling:

Fan Speed: 20 percent/initial fan speed 0 percent (May need to change for your printer.  Keep fan low to prevent warp)

Infill:

Rotors-
99 percent infill (lines)

All other parts-
20 percent infill (lines)

Material:

Motor Covers-
PETG

Solenoid Boxes-
PETG

Everything else-
PLA/PLA+

(I recommend ESUN PLA+ and ESUN PETG.  But any brand PETG and PLA/PLA+ should work just fine.)

Colors:

Rotors, damper shaft, damper arm, and damper rod: Grey  (I used Esun PLA+ Silver)

Everything else: Yellow  (I used Hatchbox PETG Yellow and Esun PLA+ Yellow)

Motor:
Samsung microwave blower- DE31-00029H, DE31-00029K, and DE31-00029J

These are all over Ebay and can sometimes be found as low as 20$.  We recommend the DE31-00029H and DE31-00029K because they are more common.  

For the DE31-00029H and DE31-00029K, we recommend using two 5uf capacitors in parallel for a total of 10uf.  For the DE31-00029J, we recommend two 4uf for 8uf total.

The capacitors we used measure approximately 35mm (L) x 12mm (W) x 23mm (H).  https://www.ebay.com/itm/285415751960 Ebay listing for the 4ufs I bought.

If you want to have the more common Marathon motor instead of the 3 phase GE, you can download Demetrius's Marathon model here! https://www.printables.com/model/1003267-marathon-13rd-scale-215tc-for-mini-3t22 

Hardware:

M4x14mm (or 16mm) machine screws (6x)  Stand + spacers to the intake

M4x6mm machine screws (7x) Stand and A frame

M4 nuts (13x)

M3x12mm machine screws (55x) Intakes and horns

M3x10mm machine screws (24x) Solenoids, solenoid boxes to intake, and damper rod. And then 3 on each motor cover to hold the stator to the motor.   Also 3 on each valve to hold them to the shaft.

M3 washers (6x) used for the M3x10mm screws holding the stators to the motor covers

M3x8mm machine screws (8x) Solenoid box covers

M3x6mm machine screws (4x) Hold junction box to the motor

M3 nuts (65x)

M2x10mm machine screws (2x) Hold damper arm to damper shaft.

M2x8mm machine screws (24x) Slapper lips and hinge covers

M2x4mm machine screws (2x) Junction box cover

M2 nuts (26x)

1/4" x 2-1/2" eyebolt (I walked into my local Lowes and bought the black one they have, comes with a nut too)

A couple 1/4" washers (for the eyebolt)

M3x5.7mm brass threaded inserts (14x)

https://www.amazon.com/gp/product/B081BCRZZS3   (I used these)

Download Demetrius's puller tool in the remixes for easy rotor removal! https://www.printables.com/model/874581-rotor-puller 

Cable clamp connector 1/2" knockout and 3/8" trade size

Solenoids:

JF-0826 (I used 24V but Demetrius used 12V ones and they also work perfectly)

Rotor installation:

Print the 5/16" tolerance tool in the same settings you will print the rotors.  Then take it and press it on your motor.  

Whichever numbered hole fits how u please, select the corresponding rotors with that hole number.

Hole 1 is 8mm, and the following holes go up by 0.1mm increments.

Take a piece of paper towel or duct tape or electrical tape or whatever u want (I use paper towel), and put the tiny piece over the top of your shaft, setting one side inside the D shaft groove.  Then take your rotor, and press it on until the ports line up. 
If you accidentally press the rotor down too far, you can use the rotor puller tool to pull the rotor back up to the right height.

Once u have assembled the siren, you should secure the siren with tape or bolt it to a mount (M3 machine screws).

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