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

That's interesting, mine ran for about 5 or so minutes then died!  And it ran no where as fast as before (or as on the variable AC supply set at 24v) when on the doorbell transformer.  Though I bet not all doorbell transformers are the same.

I have high hopes for the 24v/50av (~2 amps / 50 watts) wall adapter.