The Otter Valley Railroad N scale gondola is based on a 6,000-cubic-foot capacity car based on a National Steel Car prototype ...

According to Trains.com Director David Popp, T-Trak (T as in tabletop) is a modular system ... Railroad. Other railroads and time periods can be swapped if desired. Having the track plan in N ...

The main challenge here was the extremely limited space available: the track in N-scale layouts is 9 mm wide, meaning that the whole system had ... reliably on direct rail power.