The manual says 72-1944-250 and 4/01.
Christmas Train
When I placed the train on the live track, it instantly went at a very high rate of speed, such that it would have run off the track.
Let me see if i understand the basics here.  The old train speed was controlled by the voltage or amperage rendered by the control box through the track.  The new train (Harry Potter) seems to be controlled by bluetooth signals to the engine and the track voltage remains constant.  Is the above correct?  If so, how would one control the speed of the old engine?  A conundrum.
Thanks for your insights.