Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

A few days ago I came across a ad that I believe is this engine running a display that is like the B-40 display for the B-38.  Though it doesn't have the middle pulley.  It seems to have a drive shaft from the engine to the display (not a belt).  I can also see what might be the added brace for the gear.  Hard to tell really with the image.  But it is clearly a different setup from the B-39.

Though if I am right, how would that drive shaft run the platter of the display?  Would the Display have a different model number?  hmmm.

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