MELGAR Thanks for showing an interest in this, and reviewing the numbers so thoroughly. The Marx train scales seem enigmatic to me. They are billed as "3/16th scale" - an architectural scale i.e. 3/16th of an inch is equal to one foot. This translates to 1/64th. However, these trains run on 0 gauge track. On paper it seems strange, but the old tinplate Marx trains have always seemed so nicely proportioned and attractive to me. So I used the 1/64th scale factor for my testing results. Later on, I am going to use the same test rig for some of my Lionel trains, and I will use the 1/48th scale factor for those. I have an old Pennsylvania GG-1 electric, a S-2 steam turbine loco, and a New York Central F-3 diesel.
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