Steve,
If any of your XO4 motors run hot on DC, seriously consider getting a new super-neo magnet (adverts in all the major modelling mags). This will protect the motor coils from burn out, and provide noticeably superior performance under DCC control. There is a big variability in XO4 magnet quality: some earlier motors I have are as good as the day they were made, others weakened years ago; but a replacement is an instant cure.
To get the smoothest and quietest possible performance requires a decoder with 1A continuous current capability, high frequency drive, and back EMF, and ideally some tuning capability. The Lenz gold/silver/standard types, or Zimo MX 63 both work well in extracting good performance. There has been a strong recommendation for the TCS back EMF decoder on this forum, as possessing similar performance at a very competitive price, but have not had the chance to try it yet.
If any of your XO4 motors run hot on DC, seriously consider getting a new super-neo magnet (adverts in all the major modelling mags). This will protect the motor coils from burn out, and provide noticeably superior performance under DCC control. There is a big variability in XO4 magnet quality: some earlier motors I have are as good as the day they were made, others weakened years ago; but a replacement is an instant cure.
To get the smoothest and quietest possible performance requires a decoder with 1A continuous current capability, high frequency drive, and back EMF, and ideally some tuning capability. The Lenz gold/silver/standard types, or Zimo MX 63 both work well in extracting good performance. There has been a strong recommendation for the TCS back EMF decoder on this forum, as possessing similar performance at a very competitive price, but have not had the chance to try it yet.
