I've just installed a TCS WOW101-Steam V4 in one of my models, and it seems to be behaving strangely. The locomotive runs perfectly smoothly, both forward and backward, on straight, curved and turnout track. However, the chuffing sound from the decoder seems to cut in and out, and go out of sync with the motor. This seems to happen at random.
The locomotive in question is a Bachmann On30 2-6-0 that's been converted to a 2-6-2. It's the first time I've used a TCS WOW decoder, and I was wondering if there was any sort of BEMF 'tuning' that may need to be done?
Any advice would be appreciated.
Since posting this, I've done a bit more test running. I've noticed that when this particular model is running, it sometimes slows for a moment, then speeds up again. Sometimes this is accompanied by rapid chuffing. Thing is, it'll then run over the same section of track again without any issues. I'm suspecting that BEMF may be an issue?