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What you need for conversion set

- The model and upgrade kit

- Small flat screwdriver

- Soldering iron 15W/25W

- Super glue or Loctite

A torch, a self made pin and bracket to remove the worm. More info here.

Installation time: Around 1/2 hour


Take apart

Remove screw on top of the model

Contents of the kit

The Tramfabriek made it easy for you! A lot of pre-work has already done. The nickel silver plates have been soldered together and screw threads have been made in the motor and the plates. You’ll only have to replace the worm and fit the new motor.


Remove original motor

Remove two screws on the bottom of  the model (on this picture the new motor has already been installed). Then solder the wires of the new motor to the contact strips and screw the new motor in place.


Place brass adapter in worm

Remove the worm from the original motor (do not use the Tramfabriek gear puller here, as most of the time, the worm is fitted too tight and you will break the pin. You’ll need to heat it up with a torch. For more valuable tips how to remove a worm, gear or flywheel, click here. If you find it difficult, just send the motor to me and I’ll take the worm off. You are even welcome to do this before purchase, so we’ll send it out with the kit.

Then press the brass adapter in the original worm. Be careful with the adapter, the wall is only 0.1 mm thick. You might have to clean out the worm to make room for the adapter.


Check fitting

Check how far the worm has to go on the motor axle, glue it on the axle.  When the glue has set,  go immediately test the model in both directions. When the glue hasn’t completely hardened yet, you’ll still be able to make adjustments.


Assemble model

When everything works well, put the parts back together.