Hornby R2073 Class 110 DMU train pack.

[Tyke Dave]

I have fitted a DCC decoder (non sound) to the ringfield motor and added cab and directional lights to my old Class 110 DMU. This was hardly used and is in excellent condition. Everything works fine (including changing the address on the decoder) but the motor does not move.

The motor previously ran on DC and have lubricated it & cleaned the commutator. Carbon brushes are fine. There are screws at the top of the brush holders with the left hand screw being slightly longer than the right hand screw. I have fitted a solder tag and insulating washer to the left hand brush holder, so the black wire from the decoder is connected to the tag and the grey wire from the decoder connected to the brush holder. The orange wire from the decoder is connected to the right hand brush holder and the pickup which was on the right hand brush holder is connected to the red wire of the decoder (ref: Digital Commend Control by Ian Morton, Ian Allan publishing, p.46).

Any help would be much appreciated!

[Rog RJ]

Disconnect all wiring from the brush holders and test for continuity between the left hand brush holder and the chassis and wheels. There must be no connection, if there is, the decoder is usually destroyed immediately when power is applied.

[Fishmanoz]

If I’m reading correctly, your LH brush holder and tag can’t work. If there is continuity from brush holder to chassis, then you’ve already blown the decoder, as Rog said. If there is no continuity there, then you have no connection to chassis for the black wire.

Suggest you put Mr Morton to one side and google Brian Lambert, go to his DCC pages and look up his conversions for the 3 different Ringfield types.

[Tyke Dave]

Many thanks indeed for that. Most helpful. (There are only two types of Ringfield motors mentioned in the Ian Morton book).

[Tyke Dave]

Thank you for the advice Roj. I will check this before I do anything else.

[Tyke Dave]

 

 

[Chrissaf]

@Tyke Dave

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