Well, I decided to switch scales before I start my layout. I just could not get that much into a 5' x 11.5' space. In N scale I can get much more. I am attempting to design a new track plan. What I would like to know now is the specifications for N Scale. 1. What is the track guage in MM? 2. How long would a scale mile be? 3. What about inclines? 4. What is the spacing between tracks on the straight? 5. What is the spacing between tracks on a curve? 6. Anything else I need to know about N vs HO? Any help would be appreciated.