From the How Stuff Works web site (http://entertainment.howstuffworks.com/how-thomas-the-tank-engine-works2.htm).
"The train characters are models built to a 1:32 scale, known in the model railway world as "O" Scale. "
1:32 scale is not O scale, regardless of what that misinformed website says. What they likely meant to say was 32mm gauge...which is O scale.
In proportions, O scale can be 1:43, or 1:48 depending on manufactures and countries.
1:32 is true large scale, like the high end standard gauge offerings from Accucraft and other manufacturers.
The real Thomas is mostly "Marklin" O scale, which = 1:43.
The models themselves are normal electric locos (likely using some form of DCC or command control). The elaborate smoke comes from two sources. The locos themselves have special smoke units with a fan that produces the nice smoke plumes. The smoke seen coming from under the locos actually comes from tubes placed under the layout that go through holes in the track. The locos are then placed over these spots and the smoke looks like it's coming from the locos.
Matt from Anaheim, CA and Bayfield, COClick Here for my model train photo website
Southwest Chief wrote:1:32 is true large scale, like the high end standard gauge offerings from Accucraft and other manufacturers.
I don't know if I'd call it "true" large scale, but, the "Correct" scale to model standard gauge trains on 45mm or Gauge 1 track.
Jack
I read a long time ago that they were 1/32 scale, on 45mm track, RC controlled with battery power. This allowed the track section modules to be assembled easily, quickly put together and taken down.
The trains are scratchbuilt on commercial mechanisms but they didnt say which. Large scale size means easier to load the internal controls for the eyes and such, easier to make rolling stock as well plus larger trains have always looked better on film.
Have fun with your trains
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