Arnold Köf (N gauge)
The famous cult locomotive Köf is a popular Arnold model. I had heard of it from several customer that they love this little model, but the motor had failed or they wanted to upgrade it with one of my motors. This was for me the first time that I fitted my smallest motor, the 6 x 15 mm. It was the right guy for the job, as not only made it run the model wonderfully, space was gained on the sides. Which means a decoder can easily be fitted, or you just have see through from the front to the back, for the first time. Also a first time: you get a worm with it as well, so no need to remove the worm from the old motor. Just cut and solder the wires, no glue needed, close the model and you're done.