http://trainmaster.ch/ZX-684.htm

Some pictures from the seller's website http://trainmaster.ch/

90 G5s locomotives were built for the PRR between 1923 and 1925 at the railroad's Juniata Shops in Altoona, Pennsylvania. Thirty-one more were built between 1924 and 1929 for the Long Island Rail Road, then a PRR subsidiary. https://en.wikipedia.org/wiki/Pennsylvania_Railroad_class_G5

Same boiler as H8 and E6.

Coreless DC Motor

I replaced the open frame motor with a coreless DC motor Maxon A-max 16 12V/2W. The motor starts at about 2 V and draws 130 mA.

Shafts and U-Joints from NWSL

Docs

Soundtraxx Tsunami2 TSU-2200

• Installation Guide
• Electric User’s Guide
• Steam User's Guide
• Steam Technical Reference (CV codes)
• Sound Selections for Tsunami2 for Steam Prototyps
• Electrical Interface & Wire Color Code for Digital Command Control

• Energy Storage
• Digitrax Zephyr xtra Set Manual

Wiring

Locomotive

Color	NMRA JST Pin#	Loco Header Pin#	Function
Red	8	1	Right Rail Pickup
Orange	7	2	Motor(+)
Gray	3	3	Motor (-)
White	5	4	Headlight
Green	9	5	FX3 (Ashpan Flicker CV 51: 23+128=151, F24)
Blue	6	6	Function Common (+12V)

Tender

Color	NMRA JST Pin#	Function
Black	2	Left Rail Pickup
Yellow	4	[Backup Light]
Blue	6	[Function Common (+12V)]
Purple	-	Speaker (+)
Purple	-	Speaker (-)
Blue	-	Current Keeper [Function Common (+12V)?]
Black	-	Current Keeper [Ground?]

Spare

Color	NMRA JST Pin#	Function
Brown	1	FX4
Green/White	-	FX5
Brown/White	-	FX6

Sound Configuration

Function	CV	Value	Type
Sound Configuration 1	112	4
Fuel Type		+1+2, 0	Hand-shoveled Coal
Injector		+4, 4	lifting
Power reverser		+8, 0	disabled
3-cylinder exhaust		+16, 0	disabled
Articulated wheel-slip		+32+64, 0	disabled
Articulated exhaust		+128, 0	disabled
Engine Exhaust Control	114	90	faster, for 4 chuffs per revolution
Whistle	120	42	PRR Round Top 3-Chime
Bell	122	15	Medium Brass 2
Exhaust Chuffs	123	4	(default, Medium 2)
Airpump	124	3	(default, cross compound 2)
Dynamo	125	2	(default, dynamo 3)
Coupler Select	126
Poppet Valve Release Rate	200

Motor Configuration

Function	CV	Value	Type
BEMF Cutoff	10
PID Kp Parameter	209
PID Ki Parameter	210
Low-Speed Compensation	211
BEMF Feedback Intensity	212
Low-Speed Compensation	211
BEMF Sample Period	213		default 15
BEMF Sample Aperture Time	214		default 15
BEMF Reference Voltage	215		6 to 25.5 V (60 .. 255)

https://sites.google.com/site/markgurries/home/decoders/decoder-motor-tuning/soundtraxx

Headlight

Finished Model