Why all the fuss about "short circuits that'll drive you nuts"..?? Why is this always raised as an "issue" for 2-rail O Scale?? Modellers worldwide manage to work in 2-rail in smaller scales than O without going nuts over short circuits!! Unless you simply can't comprehend the principle of 12v DC wiring, I've never seen "short circuits" given as a reason to "not" model in any other scale - or even in O here in the UK, where 3-rail is a very small minority interest indeed, & 2-rail is a booming market.
I have converted a few items of rolling stock from 3- to 2-rail, but wouldn't bother with locos; just sell the 3-rail, which shouldn't be a problem in the USA, & buy 2-rail, which, it seems, might be, as it's such a small minority interest....
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