2-8-4 or 4-8-4

[timhar47]

I love my 2-10-2 but it likes 24"r best. You can hear it making noise on the 22"r curves. But as ACY said,, for the nth time, some will run on 18"r - no rhyme or reason. I happened to get one that wont.

[the nitro man]

what about the older ones? wasn't they made to run on 18" radius track? if they was & people designed their layout with 18"r, if they have to get one warrantied their screwed now. why wouldn't they make them to run on a standard 18" radius?

[ACY]

All I know is that for the new 4-8-4's and 2-10-2's you will want at least 22" radius because otherwise you are taking a big gamble banking on yours making 18" radius, I haven't seen many new ones that will. As far as the old ones go if you get one from the 70's or early 80's, those may have been designed to run on 18" radius, but I know later versions were designed for 22" minimum radius.