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How To Slow My Athearn RTR SD40

Tom writes:

“I have an Athearn RTR SD40 which won’t slow down. I’ve tried speed table programming without success. It has a soundtraxx Tsunami decoder. Anyone else had this happen?”

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3 Responses to How To Slow My Athearn RTR SD40

  • Jerrysays:

    Call soundtraxx. They are very helpful in selecting the proper CV setting.

    • Jerrysays:

      Usually cv03 is the program setting for acceleration and cv04 is deceleration.

  • Johnsays:

    Tom, if you haven’t already, check the Motor Starting Value cv02. Lower setting = slower start. may be set too high.

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