Bergs 30 Class Tender Engine – TCS M1

Josh Beveridge 30/8/2005

There is not a lot of room inside this locomotive. This is where the small TCS M1 comes in handy. The M1 fits neatly in the smokebox of the model from the inside.

Step One: Separate the body from the locomotive chassis. Un solder the wire off the motor.On this model, care must be taken to effectively isolate motor frame from the chassis. The motor uses the motor frame to provide an electrical connection to one of the motor poles.

Step Two: The motor needs to be unscrewed from the chassis. You will notice on the bottom of the motor frame, that there is a locating pin, which fits into the chassis. It must be isolated. I did this by using a piece of heatsink tube as a sleeve over the locating pin. You also must stick a piece of black electrical insulating tape along the plate on the chassis where the motor sits on. Re-screw the motor back into position and use a multimeter to see if it is properly insulated.

Step Three: Connect the decoder wires. With this locomotive, you will need to leave enough length in the decoder wires to allow the decoder itself to be placed inside the smokebox. Solder the Orange decoder wire to the motor frame and the Grey wire to the solder pad on the exposed motor brush. Solder the red decoder wire to the chassis and the black wire to the solder pad on the tender drawbar. Tape down all loose wires so they don’t get caught up in the motor whilst it is moving.

Step Four: Program loco, reassemble and test run.