The question of B units (from AB, ABA, or ABBA sets) in O gauge trains and why they DON'T SMOKE... Did the prototypes not smoke too? Or is this a cost saving / amp draw UL approval issue?

DdotCdotOGR Forum Member

Figures if two B units have smokers in an ABBA set, in addition to both A units with smokers - that's 4 elements on one transformer - not to mention probably at least 4 motors and sound boards too... I don't think even an industry standard old ZW will handle that kind of torture for very long, so I can understand if this is the reason for cutting corners.

But I also have no idea if the real B units sourced power from the A unit(s) or if they actually had smoke exhausts too... Any experts who know the answer - it would be great to hear from you.

7/16/173:21 PM

Original Post

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