mikep7 Posted August 28, 2013 Share Posted August 28, 2013 I have just bought a "DCC-fitted" loco and understand it's OK to run this with my many other DC locos on DC power. However I notice that the DCC loco runs in the opposite direction to all my DC locos which makes 'double-heading' impossible with it. What's the best way to fix this - change the polarity somehow (and if so how) or remove the DCC chip and make it just "DCC-ready" (is this easy or a major challenge ? Link to comment Share on other sites More sharing options...
Rog RJ Posted August 28, 2013 Share Posted August 28, 2013 You could try reversing the decoder in the socket. Otherwise reverse the connections on the motor if you can get to them, although that would invalidate the guarantee. Link to comment Share on other sites More sharing options...
Rog RJ Posted August 28, 2013 Share Posted August 28, 2013 My previous reply assumes an 8 pin socket and decoder. Link to comment Share on other sites More sharing options...
mikep7 Posted August 29, 2013 Author Share Posted August 29, 2013 thanks Rog for the suggestions. I tried (with some nervousness) turning the decoder round and bizarrely it made no difference. As for the motor connections there are many and all deeply buried so I'm stuck for the moment. Link to comment Share on other sites More sharing options...
Flashbang Posted August 29, 2013 Share Posted August 29, 2013 Hi If you're unable to access the motor feed wires or dont fancy the challenge, then you need to find someone with a DCC system (Local model shop, Model railway club or a friend etc) and ask them to set the normal direction of travel to the opposite from what it is now. This can be done by the DCC console or by directly alerting the value by 1 set into CV29. Link to comment Share on other sites More sharing options...
RDS Posted August 29, 2013 Share Posted August 29, 2013 @mikep7 I would NOT recommend altering the wiring. The suggestion about getting your loco reprogrammed by someone with DCC is the best option. I assume (because you have bought a DCC loco) that you are planning to go DCC at some time in the future? Link to comment Share on other sites More sharing options...
pidder Posted August 29, 2013 Share Posted August 29, 2013 Perhaps your local model shop could take out the decoder and fit a blanking plug in its place. Not sure if this would result in the correct direction but I would expect so. Link to comment Share on other sites More sharing options...
Graskie Posted August 29, 2013 Share Posted August 29, 2013 I've had to do exactly what Fishy suggested with a few of my DCC locos, not for DC purposes, but for actual DCC operation. A very useful suggestion. Link to comment Share on other sites More sharing options...
poliss Posted August 29, 2013 Share Posted August 29, 2013 Are you sure it's DCC fitted and it isn't just a blanking plug in the socket? Can you put a photo on photobucket and put the link on here? Link to comment Share on other sites More sharing options...
mikep7 Posted August 30, 2013 Author Share Posted August 30, 2013 Thanks all for the helpful suggestions. @ poliss Yes it definitely has a decoder fitted not a blanking plug and was advertised as "DCC-fitted" @ pidder Turning the decoder round doesn't get round the problem, I have 5 DCC ready locos all of which go in the same direction as my DC ones, so this latest loco needs a different fix @ everyone else - yes I think I'll get someone with DCC and get them to alter CV29, whatever that is, and Hornby have also since offered to do this. I didn't want to change the wiring ;-) Link to comment Share on other sites More sharing options...
mikep7 Posted September 16, 2013 Author Share Posted September 16, 2013 Just a postscript on this thread, the eventual fix, or at least the only one that worked in the end, was to reverse the wires to the motor to change the polarity, maybe the Chinese got them wrong :-/ Link to comment Share on other sites More sharing options...
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