FYI - the plug is not special ala 4117-8. Just a two-pronged plug .
The idea of an upside-down steam dome seems natural, but not really because
it needs at least one inch of straight wall before curving over to make a
dome. This 'under boiler' extension is about two inches deeper than the
boiler. If I can get it opened up I can source band heaters, a solution I
used at least three times on an Elektro and two Empires (Play Boy and B31)
engines.
It is good to hear the steampipe is soft-soldered. I'll probably think about
it for a long time then jump in with both feet and disconnect it.
As to the dynamo - I'll have my studio-tech buddy check it out. I can run it
easily with the engine on air and use a multi-meter for diagnosis.
One thought - Since it is AC (probably), could I test it by wiring it to my MARX
train transformer? It is AC, 0-15volts and would be a very easy test. I think it
ought to run.
Wayne