Wickness Models, 6 Greenlea Crescent, Collin, DG1 4PR    douglas@wicknessmodels.co.uk

Sound In N Gauge Dapol Steamers

The best method we have found to fit sound to Dapol steamers is as follows, this method avoids any invasive surgery on the loco itself, all the work takes place in the tender so the loco will run exactly as originally manufactured, just with sound!! This method also has the advantage of fitting a full size sugarcube speaker giving excellent sound levels in N Gauge

  1. Remove the socket and de-solder all connections including capacitors
  2. Build up the edges of the motor magnets by gluing in some strips of plasticard to raise them a little
  3. Take a Zimo MX648 with suitable soundtrack and cut away all of the heat shrink isolating cover, de-solder unnecessary wiring from the decoder(green, brown, blue, yellow, white)  this makes it small enough to fit over the motor
  4. Cover the decoder in Kapton tape to isolate it
  5. Cut the pickup and motor wires to length and solder into place, locating the decoder on top of the motor by gluing it in place against the plasticard raised points, this keeps it clear of the armature. When soldering to the motor terminals make sure you only “dab” solder as the heat can cause the brush casings to slide out as the plastic surrounds warm up with the soldering iron heat close by
  6. Locate a Sugarcube, Limo 6 or Microcube speaker in place where the socket was located. Ensure the tack you use does not touch the tender wheels as this will prevent them from turning. Wickness Black Tack is ideal for this. Solder in the sugarcube
  7. The shell will no longer fit as the decoder sits high so now you need to modify the tender shell. Depending on the model you have you may be able simply unclip the coal insert on the tender shell, if this is not possible dremmel all the coal out, cutting from the top allows you to ensure you dont go too close spoiling the bunker edges
  8. Add extra Kapton tape layers over the whole assembly to ensure that when you glue artificial coal over the surface neither glue nor coal will find its way into the mechanism. Picture below
  9. Refit the tender shell. A picture of this can be seen below
  10. Finally add artificial coal by filling the void with a good quality modelling glue and sprinkling n gauge artifical coal into place, the model is now complete. See below

Here is a test run

Wickness Models 13.08.2017