This is Part 1 of a mini-series looking at upgrades to an old Lima ringfield/pancake motor-driven Class 47 locomotive. The general principles will apply to most ringfield/pancake style models.
In this video, we look at converting the analogue DC ringfield motor to DCC use, through the installation of a Hornby TTS decoder. The process is, however, exactly the same for non-sound decoders.
It's vital that the decoder selected can handle current draw of the motor. There are various descriptions of how to work out the stall current online. Older ringfield motors, especially those not running well, may exceed the current rating of some decoders, including TTS sound chips. Please do take time to suss out the suitability of a chip before commencing installation.
The wiring diagram referred to in the video can be downloaded here: www.strathpefferjunction.com/dcc-decoder-wiring-diagrams-for-non-dcc-ready-locomotives
The Brian Lambert ringfield motor article referred to in the video can be found towards the bottom of the page here: www.brian-lambert.co.uk/DCC.html
Items required for the modification work and installation are:
- 8-pin or 'wires only' DCC decoder
- BlackTak
- Kapton tape
- Heat shrink
- Soldering iron, solder & liquid flux
- Various tools, including: jeweller's screwdrivers, small side cutters, wire strippers, an exacto knife and a cutting mat.
In Part 2, we'll look at installing directional lighting...
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Find out more about Strathpeffer Junction at: www.strathpefferjunction.com