125_driver Posted June 1, 2020 Share Posted June 1, 2020 I have a Hornby 47 TTS sound loco that I bought on Ebay that is behaving rather erratically. When it is at speed it randomly changes direction and goes into reverse. Once it builds up speed in reverse it comes to a stand and then accelerates up to full speed in the opposite direction and then vice versa . Any advice on what may be causing this or how to remedy it much appreciated! Thanks Link to post Share on other sites More sharing options...
RMweb Gold jonnyuk Posted June 2, 2020 RMweb Gold Share Posted June 2, 2020 could try disabling DC mode (can't remember which CV it is). that's cured a couple of mine doing exactly what you describe Link to post Share on other sites More sharing options...
RMweb Gold Dagworth Posted June 2, 2020 RMweb Gold Share Posted June 2, 2020 13 minutes ago, jonnyuk said: could try disabling DC mode (can't remember which CV it is). that's cured a couple of mine doing exactly what you describe It’s one of the settings controlled by CV29. Andi Link to post Share on other sites More sharing options...
125_driver Posted June 2, 2020 Author Share Posted June 2, 2020 Firstly thanks very much for the responses it sounds that Is likely the problem. As someone who is still very much a DCC novice, how would i go about disabling cv 29 and DC mode? Obviously all controllers are different but if someone could give me a rough idea I'd be grateful as changing CVs isn't really something I've dabbled in much. My controller is a ct electronic if that's relevant? Any help much appreciated...thanks Link to post Share on other sites More sharing options...
JJGraphics Posted June 3, 2020 Share Posted June 3, 2020 It's nothing to do with the controller. You need to change the settings in CV29 on the decoder. VERY useful guide and calculator here: http://www.2mm.org.uk/articles/cv29 calculator.htm John Link to post Share on other sites More sharing options...
125_driver Posted June 3, 2020 Author Share Posted June 3, 2020 11 hours ago, JJGraphics said: It's nothing to do with the controller. You need to change the settings in CV29 on the decoder. VERY useful guide and calculator here: http://www.2mm.org.uk/articles/cv29 calculator.htm John Many thanks for the link that makes a bit more sense now! Link to post Share on other sites More sharing options...
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