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Trainorama GM Class – Diesel Locomotive 
DCC Sound Installation with Light Modifications

Trainorama GM_Install Page.jpg

Now available with our NEW Remastered Custom Sound Project

including "Full Throttle - Drive Hold" feature

About the Commonwealth Railways GM Class

The GM class are a class of diesel locomotives built by Clyde Engineering, Granville for the Commonwealth Railways between 1951 and 1967 with a total of 47 units built. The GM class was based on the EMD F7 design and were very similar to the S class then being built by Clyde Engineering for the Victorian Railways.

 

Delivered to operate on the standard gauge Trans-Australian Railway, they first entered service in September 1951 and by December 1967 there were 47 in service. The final 11 (GM37-GM47) were fitted with dynamic brakes. They operated on all of Commonwealth Railways standard gauge lines including those to Broken Hill, Alice Springs, Marree and Adelaide. 

In July 1975, all the GMs were included in the transfer of Commonwealth Railways to Australian National. In 1979, a few operated to Lithgow, New South Wales on trials, while in October 1983, three (GM23, GM24 & GM28) were hired to V/Line returning in October 1985.

Withdrawals began in 1988 and by 1994 only 15 remained in service.

DCC with Sound and Light Modifications

In November 2013, Trainorama released the GM Class locomotive which included an 8 Pin socket for fitting a DCC decoder along with a 4 pin sound ready speaker socket with two 8 ohm speakers, making it a DCC Sound ready model.

The model only came with LED front headlight and white marker with numberboard lights. No red marker lights were included, and the rear headlight was an incandescent bulb. The rear headlight did not work and required to be replaced with an LED.

In DC/DCC, all lights operate directional.

 

In March 2018, Trainorama released a 2nd run which included a 21 pin socket for fitting a DCC decoder and two 8 ohm speakers, making it a DCC Sound ready model. This model includes LED headlights, white and red marker lights.

In standard DCC, all lights will operate directional.

In October 2025, Trainorama released a 3rd run which was similar to the 2018 run, just with new colour schemes and numbers.

All the lights will operate directional in standard DCC.

 

For this DCC installation, we recommend the ESU LokSound 5 (Sound) with our remastered Custom Sound Project for the Commonwealth Railways GM Class or the LokPilot 5 (No Sound) for those not wishing sound.

 

We offer a light modification for the Trainorama GM Class to separate the lights for a more prototypical operation

Standard factory lighting has all lights “ON” in the direction of travel, requiring just 2 function lighting outputs in DCC.

2018/2025 Release: A light modification is available for the 2018 and 2025 releases to separate the factory installed lights for individual DCC control. This will provide additional lighting operation when running your Trainorama GM Class model.

Directional light control will still be available.

2013 Release: Replace the rear incandescent headlight with an LED to provide an operating rear headlight.

 

Unlike ESU/Auscision factory sound which uses 2 sound slots to operate the lights, our light modification does not use any sound slots for lighting. So, all the 10 sound processing channels are available to play sounds when using all the lighting, so you will get the full sound experience all the time.

The DCC Solutions Commonwealth GM Class Custom Sound Project

is packed with sounds and features not found on other sound decoders

being offered on the Australian market, especially factory fitted sound

Factory Fitted Sound only offers you the very basic sound 

So why not get fully featured sound from DCC Solutions

Our Custom Sound Project now includes these fantastic features:

Custom Built Commonwealth GM Class Sound Project

This is not just a basic factory sound project but a completely custom-built sound project by DCC Solutions that contains recorded sounds with customised sound programming plus extra features. This will make your Commonwealth Railways GM Class Trainorama model a uniquely, impressive driving and sounding loco that will turn heads!

Full Throttle – Drive Hold

This feature allows you to simulate a hard-working loaded train by pressing the F1 function button. When the button is pressed, the motor will remain at a constant speed, while the sound can be controlled independently by adjusting the speed on the throttle, so this can simulate a hard-working locomotive. This exciting feature gives the operator the ability to have the loco crawling in notch 8 or coasting at 100 km/h along the track. Release the Drive Hold function button, and you simply go back to throttle-controlled speed, motion, and sound. Available only from DCC Solutions, our Drive Hold will stop your loco when you reduce the speed to zero, even while the function is still active. Your ESU factory sound or sound from other providers will not stop your loco at speed step 0 with the drive hold switched on, which can damage your model because you ran into something.

Coasting On Demand

This feature allows you to enter coasting mode whenever you want with a press of a button. Often, when coming to a stop, the throttle of a real locomotive is put into idle and the locomotive coasts to a stop. Another situation that occurs is that once a train is up to speed when operating over rolling countryside, the driver can coast to maintain a certain speed. By pressing the coast function button, the sound drops into coasting and remains there. Using the throttle speed control, you can now speed up or slow down the train, with the sound remaining in coasting mode. Press the function button to exit coasting, the sound will return to the speed that's set when exiting.

Working Brake

Press the Brake Function button, and your locomotive will come to a stop at a much shorter distance than if you were to bring it to a stop by reducing the throttle speed. Release the brake and your locomotive will move off again, or choose to have it remain stationary when the brake is released. The brake can also be used while driving to slow the locomotive up.

Working Dynamic Brake or Logic Dynamic Brakes

Apply the Dynamic Brakes and the Prime Mover will wind down to idle and slow up, then the Dynamic Fans engage to assist with cooling. Reduce the throttle, and the decoder's dynamic braking logic will reduce your speed faster than normal. Disengage Dynamic Braking and the primer mover will return to it's notched speed and the fans will turn off.

Logic Dynamic Brakes is for the GMs that don't have dynamic brakes that will allow your GM Class loco to run in a trailing consist with other locos that may have Dynamic Brakes.

Brake Squeal on Deceleration

Activate this function and when you reduce the throttle speed, your locomotive will begin braking and slow up quicker as you continue to lower the throttle speed, and you will hear the squeal of the brakes. Accelerating will release the brakes.

Random Start-up Sequences with Move Off and Stopping Sounds

Now, with random start-up sequences, your start-up and shut down will not always sound the same.

As your locomotive begins to move off you will hear the sounds of brakes releasing with random speed activated wheel squeal, rail noises and other sounds. Some of these sounds are random or speed sensitive that will turn on/off automatically depending on your take-off speed. When the locomotive comes to a stop you will hear the squeal of the brakes, air releases and then the compressor will cut in automatically to fill the reservoirs with air until full and will cut out.

Remastered Horn Sounds

New remastered WABCo Series or Leslie SuperTyfon S-5T series playable and short blast horn.

Random Sounds

While the factory fitted sound will only offer you 1-2 random sounds, DCC Solutions will have up to 10 random sounds that will play when either the loco is stopping or moving, to create even more realism to running your model.

Manual Notching

For those who really want to drive their train and manually control the notching rather than letting the decoder do it.

And includes all these great features to make your Trainorama GM Class model drive and sound impressive

  • Commonwealth GM Class EMD 16-567C Custom Built Sound Project

  • WABCo Series or Leslie SuperTyfon S-5T Short Blast and Playable Horn

  • Random Start-up sequences, including Automatic Hot or Cold Engine Start

  • Air and Brake Release Sounds when loco moves off and stops, including Brake Squeal

  • When the loco stops after braking, the compressor cuts in to fill the reservoir and will turn off when the tanks are full

  • Speed sensitive Wheel Squeal and Rail Noise when the loco moves off

  • Full Throttle Drive Hold – Lock the loco speed, control the sound independently to simulate a heavy loaded or empty train

  • Coasting On Demand

  • Working Brake to bring your locomotive to a stop even when Full Throttle Drive Hold is active, unlike other ESU sound files

  • Proper Working Dynamic Brake Logic: Allows the non-dynamic brake loco to run with other locos that have dynamic brakes

  • Proper Working Dynamic Brakes: When activated, automatically slows down with Dynamic braking, cooling fans operate 

  • Directional Coupling and Release with brake line release plus auto active shunting mode to reduce the speed of the loco

  • Stop & Drive Random Sounds including fans, compressor, rail noise, track wheel squeal, air releases and more!

  • GM class compressor

  • Wheel Squeal

  • Brake Squeal on deceleration and off on acceleration

  • Guard's Whistle

  • Manual Notching – manually control the notching rather than letting the decoder do it

  • And more (See below for full list)

  • Modified Lighting Option for more prototypical light operation

  • Low beam to High beam Headlight operation

  • Motor settings tuned for slow speed performance, perfect for shunting

  • Sound volumes tuned to specifically suit the Trainorama GM Class Locomotive Model using the DCC Solutions speaker

  • Play 10 different sounds simultaneously

  • Individual sounds slots and master sound volumes can be adjusted by the user to suit personal requirements

  • DCC Solutions High Performance Dynamic Speaker producing fantastic sound

  • Full function button remapping to suit your personal requirements

  • This Sound Project is also suitable for other brands of GM Class Models

DCC INSTALLATION AND MODIFICATION FEATURES

Standard DCC Installation: Non-sound decoder with no lighting modifications

Premium Sound Installation: ESU LokSound 5 sound decoder with our Custom GM Class Sound Project

Premium Sound Installation and Light Modification: Upgrade the Function lighting outputs, depending on your model, with the DCC Solutions Light Modification to separate the lighting for individual function control on your DCC throttle, plus our ESU LokSound 5 Custom VIC S Class Sound Project

DCC Solutions SOUND and FUNCTION Labels

Premium Sound Installation and Light Modification using the ESU LokSound 5

F0    Directional Headlights

F1    Full Throttle Drive Hold

F2    GM Class Horn

F3    High Beam Headlight

F4    Dynamic Brake

F5    Coasting on Demand

F6    Brake

F7    Brake Squeal on Deceleration

F8    Prime Mover Start Up/Shut Down/Mute

F9    Front White Markers On/Off

F10  Rear Red Markers On/Off

F11  Rear White Markers On/Off

F12  Front Red Markers On/Off

F13  Directional Marker Lights

F14  Numberboards On/Off

F15  Fan

F16  Compressor

F17  Coupling /Uncoupling + DCCS Shunting Mode

F18  Wheel Squeal

F19  Guard's Whistle

F20  Sanding Valve

F21  Volume Fader - Reduces Sound 50%

F22  Front Headlight

F23  Manual Handbrake Ratchet Set/Release

F24  Spitter Valves

F25  Manual Notching

F26  Notch Up / Short Air Release

F27  Notch Down / Cab Door

F28  Rail Clank

Note: The above functions are for the LokSound 5 Decoder programmed with DCC Solutions Premium Custom Sound Installation with Light Modification.

The functions and sounds will be different from any standard generic ESU Sound Files or other Sound Decoders.

To learn how to use these functions, see the Info & Help page.

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