LGB_Chur_Arosa
Registered
Ok some updates just in case in future someone else runs into similar issues
I was able to reduce the noise from the ESU decoder’s motor control feedback loop by installing a simple low pass filter between the motor terminals namely 100nF cap and a 10ish ohm resistor. The noise was reduced and the locomotive would run stutter free almost 99% of the time.
I happened to have an LGB 55029 decoder installed in a diesel switcher that I no longer use…. I pulled it out and attached to the shay, it runs very smooth. I did some research and it turns out that you can download the latest LGB Shay decoder content from Marklin server and program it directly to the 55029 using cs3. Some updates were needed but it worked and now the LGB decoder has basically b same Shay sounds as the recent factory “high end” models (I picked the roaring camp version ). The drive is smoother so I am going to just use this and abandon the ESU. The LGB decoder was a bit cheaper than the ESU it’s rated for 10A in theory and comes with an OK speaker, perhaps overall a better option for Marklin users
I was able to reduce the noise from the ESU decoder’s motor control feedback loop by installing a simple low pass filter between the motor terminals namely 100nF cap and a 10ish ohm resistor. The noise was reduced and the locomotive would run stutter free almost 99% of the time.
I happened to have an LGB 55029 decoder installed in a diesel switcher that I no longer use…. I pulled it out and attached to the shay, it runs very smooth. I did some research and it turns out that you can download the latest LGB Shay decoder content from Marklin server and program it directly to the 55029 using cs3. Some updates were needed but it worked and now the LGB decoder has basically b same Shay sounds as the recent factory “high end” models (I picked the roaring camp version ). The drive is smoother so I am going to just use this and abandon the ESU. The LGB decoder was a bit cheaper than the ESU it’s rated for 10A in theory and comes with an OK speaker, perhaps overall a better option for Marklin users