On Track Models 82 Class: DCC modification with sound

The On Track Models 82 Class was released DCC ready and includes the 21 Pin MTC socket for easily fitting a DCC decoder. When operating in DCC with the original factory wiring the marker lights and foglights are controlled by the headlight function button and are directional. The front headlight and number boards are controlled  F2 (AUX2) and the rear headlight and number boards are controlled F1 (AUX1). The locomotive will run in the wrong direction in DCC and can be fixed by changing CV 29 or swapping the motor wires on the locomotive’s board.

 

MODIFICATION FEATURES

The model has plenty of space inside so when used in conjunction with the DCC SOLUTIONS: 2 Function Output Power Amplifier to add 2 extra functions, the ESU Loksound Range of 21 Pin decoders and by making simple wiring alterations to the manufacturer’s circuit board you will be able to operate 1) Headlights and Number Boards directionally 2) Front and rear White Markers and Foglights with 2 function keys 3) Front and rear Red Markers Lights with 2  function keys.  Total 6 function outputs.

Add a speaker for sound.

Most 82's ran with just the white markers and foglights on during the day, so this modification allows for that setup.

Time Required: 50-60 Minutes.

 

IMPORTANT: The modification requires soldering onto the circuit board components. Any modifications will void your warranty and all responsibility lies with the person making these modifications

 

REQUIREMENTS

ESU Loksound Select 21 MTC pin sound decoder (#73900) with the “EMD 12-710G3A” sound file

DCC SOLUTIONS: 2 Function Output Power Amplifier (PA82)

Contact DCC Solutions: info@dccsolutions.com.au or www.dccsolutions.com.au  for more information about the power amplifier.

MRC 16x35mm Rectangle 8 ohm 1 watt speaker with Integrated Sound Chamber speaker (0001513) or a speaker of your choice.

ESU 36 Gauge wire (Orange and Grey)

 

Part 1 _Disassemble:

Firstly, start by removing the body from the chassis. Turn the locomotive upside down and gently remove the fuel tank. Remove the Philip Head screw, with the other screw located near the back corner of the front bogie. Carefully lift up the body from the centre

 

 

Figure 1: 82 Class body removed from the chassis.

 

Part 2_Board Modification and Wiring

1.   Next remove the 21 pin DC plug.

2.  Locate the motor suppression components (Figure 2), remove them and solder some orange and grey link wires. (Figure 3)

3.  The locomotive travels in the wrong direction in DCC. Remove the retainer clips to the ORANGE and GREY motor wires and swap them over. Refit the retainer clips. (Figure 3)

                                                                                                      Figure 2: Suppression components

                                                                                   Figure 3: Install the link wires and swap the motor wires

 

4.   Rear Red Markers (No.2 End) remove the retainer clip and the YELLOW wire from the pad. (Figure 4) Place some heat sink tubing over the wire and solder to the SHORT YELLOW wire on the Power Amplifier (Figure 5).Insulate the joint with the heat sink tubing.

5.   Rear Headlight (No.2 End) remove the retainer clips for the GREEN wire (Headlight) and attach the wire to the pad you just previously removed the YELLOW wire from in step 4. Refit the retainer clip. (Figure 5)

6.   Rear White Markers and Foglights (No.2 End) remove the retainer clips for the two WHITE wires and attach these wires to the pad in which you previously removed the GREEN wire in step 5 (Figure 5). Refit the retainer clip.

7.   Front Red Markers (No.1 End) remove the retainer clip and the YELLOW wire from the pad. (Figure 4) Place some heat sink tubing over the wire and solder to the LONG YELLOW wire on the Power Amplifier (Figure 5). Insulate the joint with the heat sink tubing.

8.   Front Headlight (No.1 End) remove the retainer clips for the GREEN wire (Headlight) and attach the wire to the pad you just previously removed the YELLOW wire from in step 7. Refit the retainer clip. (Figure 5)

9.   Front White Markers and Foglights (No.1 End) remove the retainer clips for the two WHITE wires and attach these wires to the pad in which you previously removed the GREEN wire in step 8 (Figure 5). Refit the retainer clip.

10.  Solder the VIOLET wire from the Power Amplifier to the base of pin 4 on the 21 Pin Socket.  (Figure 5)

11.  Solder the GREEN wire from the Power Amplifier to the base of pin 13 on the 21 Pin Socket. (Figure 5)

12.  Solder the BLACK wire from the Power Amplifier to the base of pin 20 on the 21 Pin Socket. (Figure 5)

13.  Place the Power Amplifier as shown in Figure 5 and secure with tape.

14.  Take the MRC speaker and cut the connector off the end of the wires. Remove some insulation by stripping the ends of the wires.

15.  Remove the 2 retainer clips off the speaker pads on the board at the rear (No.2 End) of the locomotive. (Figure 5)

16.  Insert the BLACK and RED speakers into the holes of the pad and refit the retainer clips.

17.  Apply some glue to the metal chassis and attach the speaker. (Figure 6)

 

                                                                         Figure 4: The Original Factory Wiring Configuration

Figure 5: Power Amplifier Wiring Configuration

Figure 6: Speaker Installation

 

 

18. Install the ESU Loksound decoder by aligning the pins with the decoder and gently push down. IMPORTANT: PIN 11 IS THE INDEX PIN

19. Refit the body back onto the chassis. Place the locomotive on the track ready for programming.

20. Program AUX2 (Front White Markers/Foglights) to F9, AUX4 (Rear Red Markers) to F10, AUX1 (Rear White Markers/Foglights) to F11 and AUX3 (Front Red Markers) to F12 function or any function keys of your choice.

 

 

  Figure 7: The Completed Power Amplifier Installation ready for the decoder

 The 82 Class Locomotive is now ready for DCC operation with sound.

 

 

I completed this modification some time ago and since then I have done more modifications to the 82 class.

Option 2: Individual Function Control of 1) Headlight/Foglights 2) White Markers

                   3) Red Markers

Option 3: Individual Function Control of 1) Headlights 2) White Markers

                   3) Foglights. No Red Marker Control for multiply locomotive consist.

Option 3: Individual Function Control of 1) Headlights 2) White Markers/Red Markers

                  3) Foglights

 

 

Or my ultimate modification with 12 function outputs allowing for complete individual control of front and rear headlights, front and rear white marker lights, front and rear red marker lights, front and rear foglights and adding cab lights and crew for the 82 Class.

 

F0 = Directional Front/Rear Headlights

              F9 = Front White Markers

F10 = Front Foglights

F11 = Front Number Boards

F12 = Front Red Markers

F13 = Front Cab Light

F14 = Rear White Markers

F15 = Rear Foglights

F16 = Rear Number Boards

F17 = Rear Red Markers

F18 = Rear Cab Light

 

 (Requires light board modifications, an additional function board, LokSound V4.0 Decoder)

 

 

 For those who would like to modify their 82 class to DCC  with prototypical lighting and feel that this conversion maybe complicated or you simply prefer someone to complete your installations contact info@dccsolutions.com.au or visit www.dccsolutions.com.au