Minitrix BR 110 and BR 111
to 12V coreless motor
Question? Just reach out!
Fits all older version of Minitrix BR 110, BR 111 and most likely some other models.
For example BR 110: 12760
For example BR 111: 12931, 12932
Check the design of the frame and compare with your Minitrix N gauge model.
Original frame. Compare your model to see if it is similar.
What you need for conversion set
- The model and upgrade kit
- Small flat screwdriver
- Soldering iron 15W/25W
Installation time: Around 45 minutes
Take the housing off by bending the sides outwards with the nails of your thumb, then pull a bogie towards you to lift the chassis out.
Remove the two screws
Use a flat screwdriver to remove the two clips that are holding the motor in place.
Remove the two worms from the motor. In this case, I’ve cut a nail that fits in there, just sticking out a little higher. You can read more about removing worms and gears in this article on this website, a MUST READ.
Take the electronics board off and the two metal blocks out. Put the two light bulbs aside (at the ends of the model), you might loose them.
Firmly, but carefully press the worm on the brass adapter until you can’t get it further. Do this for both worms.
Slide the adapters on the motor shafts. fit this assembly in the motor, to check if the worm sits centred above the gear. Route the red and green wires through the gap before you push the motorblock in.
Slide the whole assembly in and test it running. To glue the adapters, slide them first on, about three millimeters from the motor. Then put a tiny bit of Loctite or superglue on the shaft, so only about two millimeters will be glued. If you would put glue inside the tube before sliding it on instead of on the shaft, you would run the risk the tube is stuck before you reach it intended position.
Solder the wires. Not that there is a small + indicating the positive connection. As the motor comes pre-fitted in the housing, we should have fitted the motor so the right contact is the +.
Now it’s time to close up the patient. Slide the motor back in, noting the routing of the grey (-) cable. It will stay on this side.
And one more model has been brought back to the future!