n scale code 55 track

[Brakie]

The code of the track doesn't matter. I wouldn't want to go with less then 15" if you want them to look right, but they would probably operate on a 12" radius.

Mike,I suspect those engines would run on 9 3/4" curves but,would probably derail the first car its pulling.

Not so long ago there was a big pow wow about body mounted couplers on freight cars as a manufacturing standard on Train Board and the biggest howls agin the body mounts was the use of-yup-9 3/4" curve.

I think like HO those long wheel base engines and stack cars demands a broader curve-a more generous 19" curve would be the best size to start with.

As far as 9 3/4" curves the dies should be pitched into the nearest scrap dumpster and 11 3/4" curve should become the standard train set curve..