Reply to "MTH RailKing Locomotive Issue"

ElliotgbOGR Forum Member

Ted S posted:
It sounds like this might be an early (<1998) PS1. If you're using a chopped-wave power supply, intermittent or varied chuff rate is a known problem. You would have to use a sine-wave transformer, or put a 150uF NON-POLAR capacitor across the output of your transformer to smooth the waveform.
It is possible to adjust the chuff rate, but as I remember the procedure involves applying power while holding the loco back, etc. That's pretty hard on the motor and tires!!

Ted S

You’ve hit the nail on the head. I tried my old K-Line transformer and the chuff rate is once again normal.

Oddly enough, when I first got the train, I ran it using the MTH that first night and it was fine. Next day, it was echoing and off rate and I couldn’t figure out why. I put in a BCR because I thought that would help.

You’ve saved me lots of frustration and a trip to the Hobby Store!

Many thanks!

1/23/207:47 PM

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