Jan posted:...All their brass steam locomotives...are scale.
Jan
This is correct. I purchased several of the hand-made, Williams brass locomotives when they were originally issued. In fact, the locos were purchased from Nicholas Smith Trains. As I recall, the locos used LGB smoke fluid, but, my recollection may be wrong.
Right of Way Industries, and, Williams, with the Crown Edition brass engines really led the charge to the scale trend in O gauge railroading. (There is an interesting series of posts on another thread about a meeting between Right of Way, and Lionel execs, including Richard Kuhn, about the development of RailSounds, and the later issued, scale sized, Lionel Reading T-1)
The Williams brass steam locos required a total rebuild of my layout to incorporate the 6 foot diameter track. At that time, one of the only alternatives was hand-bending, and cutting GarGraves flexible track, since GarGraves had not as yet introduced their sectional track. Based on a tip from Elmer at Wild Bill's, I used my water heater as a template to bend the track!!! 
As a final note, the Williams Crown Edition engines that I owned did not have the detail of many the later issued, and, currently available 3rd Rail locos. The Crown Edition locos are still gorgeous IMHO, and, easier to handle because of the lack of extensive detail parts that can be damaged in handling.
