My wife talked me into buying Bachman's model of Walt Disney's backyard railroad. Now I realise that I'm working in a brand new scale. Walt's railroad was 1/8th full size and I think ran on 7.5" gauge track. My model runs on HO gauge track. If I divide the 5/8" into 7.5" I get 1:12. So I now have a 1" to 1' model of a 1 1/2" to 1' model. Next week: the dollhouses! Well, I'm having fun running it. I've replaced all the wheels in the cars, but the pickup is 2 wheels on each side of the tender and it doesn't like Peco insulfrogs, in one direction anyway.