I looked at Q Car, NW Shortline, and Hollywood Foundry (which last went up to, but not beyond, S scale) websites, and nothing much has improved in the decades I have been looking for power for 1/4" 3 rail creations. (when I began, I was blown off by one of the above, which is now under new ownership, for wanting a three rail drive train) On this site I have learned I am most certainly not the only person with such interest. Bowser was only the source I found, for single and two truck traction chasses I could modify...(I am not sure they are still available from Bowser). Q
car had one, that I saw, truck side frame stated as used by gas electrics. (Walthers
and American Car Co. have made O scale gas electric kits....Walthers did provide
a power train).
There is no model train show that approaches the size of the three rail dominant York
meet, so....why is three rail ignored by these manufacturers?