Kev C Posted November 14, 2019 Share Posted November 14, 2019 I have a Railroad Flying Scotsman TTS fitted that after a period of running now stops with sound still working. Then after a wait it will move forward and backwards but only for a few revolutions. The only changes I have made to the decoder is to change the short & long address via my NCE Powercab.I also decided to put a Class 66 TTS decoder into a Railroad class 59 after a short period of very jerky and rough running now it will only play sound and not move. Any ideas folks ? Link to comment Share on other sites More sharing options...
2e0dtoeric Posted November 15, 2019 Share Posted November 15, 2019 What 'R' numbers are the models?Did you fit the decoders yourself?Did they work properly on dc before you converted them?Do they still work on dc? Link to comment Share on other sites More sharing options...
ColinB Posted November 15, 2019 Share Posted November 15, 2019 On the occasions this has happened to me it is because the loco movement is not as free as it should be, on DC it seems to give it more power to free any restrictions. Link to comment Share on other sites More sharing options...
Plumloco2 Posted November 15, 2019 Share Posted November 15, 2019 Just had this happen to me on a J36 when installing a sound chip. Found two electrial shorts. The back of a spring plunger going to the left loco wheel pickups was poorly soldered (it was a big blob) and was touching the chassis and the left side motor terminal was also touching the chassis. Under DC the short wasnt a problem as it it just meant power went straight to the motor. Under DCC the loco would start to move and the vibration would cause it to short and make it stop. Then you could restart and it would do it again. Filed of the offending solder and putting insulation around the motor terminal fixed it. Poor qualty control at the factory. I now test all conections with a mulitmeter at the DCC socket before installing a Decoder. Link to comment Share on other sites More sharing options...
Iliketransport Posted December 4, 2019 Share Posted December 4, 2019 Have you fitted the decoder the right way round? Link to comment Share on other sites More sharing options...
96RAF Posted December 4, 2019 Share Posted December 4, 2019 Have you fitted the decoder the right way round? Reversing the decoder in an 8-pin socket will only affect the lights, which are likely not fitted anyhow.It is also 2 weeks since the OP so likely its either fixed or sent back. Link to comment Share on other sites More sharing options...
WilliamDavid Posted December 4, 2019 Share Posted December 4, 2019 My RR TTS Flying Scotsman's motor burned itself out.Hornby replaced the motor. New motor then went faulty.Replaced it with a Tornado motor as you can't buy the original (grrr!)Can you return it to dc to prove the motor still work?Not Hornby's finest. Link to comment Share on other sites More sharing options...
WilliamDavid Posted December 4, 2019 Share Posted December 4, 2019 I hope the new Princess Royals come with a decent motor. The one fitted to the old range are far better than the latest motors. Link to comment Share on other sites More sharing options...
Blackbird Posted December 4, 2019 Share Posted December 4, 2019 Try resetting CV 150 to 1 Link to comment Share on other sites More sharing options...
Fishmanoz Posted December 4, 2019 Share Posted December 4, 2019 Hi Blackbird, welcome back, first post in over 2 years! Link to comment Share on other sites More sharing options...
ff2nd Posted December 5, 2019 Share Posted December 5, 2019 My RR TTS Flying Scotsman's motor burned itself out.Hornby replaced the motor. New motor then went faulty.Replaced it with a Tornado motor as you can't buy the original (grrr!)Can you return it to dc to prove the motor still work?Not Hornby's finest.If your Scotsman was RR, then presumably it had the motor with the flywheel? If so, it's exactly the same as the Tornado one. X6331. Link to comment Share on other sites More sharing options...
WilliamDavid Posted December 6, 2019 Share Posted December 6, 2019 If your Scotsman was RR, then presumably it had the motor with the flywheel? If so, it's exactly the same as the Tornado one. X6331 Sorry, my mistake.Should have said P2 motor. Link to comment Share on other sites More sharing options...
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