The NNE Scenic V3 is okanned as a multi-deck around the walls layout with a U-shaped penninsula. The initial design of the track plan covers the lower and middle levels. As the design evolves, it will periodically be updated here to reflect the current design.
The lower level models the New Hampshire portions of the Eastern Route of the former B&M railroad route between Boston, MA and Portland, ME.
Minimum radius is 18", with XTrackCad easements set to normal except for turnouts. Crossovers and turnout connections to parallel track use easements set to sharp. Minimum siding length as well as minimum distance between towns is 12'.
Trains leaving staging (as Boston, MA) headed north to Portsmouth use the outer track of the helix and leave 1/4 of a turn slightly elevated to head towards Hampton Falls. Elevation descends slightly between pairs of towns to get back down to staging height before reaching Portsmouth and continuing back into staging (as Portland, ME.) Trans leaving staging (as Boston, MA) headed for the western route on the middle level also uise the outer track of the helix, continuing on the helix. Trains headed back down to staging from the middle or upper levels are expected to use the inner track of the helix coming down into staging.
The middle level starts by modelling the New Hampshire portions of the Western Route of the former B&M railroad route between Boston, MA and Portland, ME. But rather than continuing to Portland from Dover, the trackplan models the route that continues north through Milton, Wakefield, and Madison headed north towards North Conway.
Trains that came up from staging (as Boston, MA) exit the helix into Exeter, NH. Trains headed up from staging representing points north can continue a few inches further up to enter Madison headed south. Trains leaving Madison to head back to staging would head down the inner track of the helix. Finally, trains continuing on to the upper level and North Conway from Madison will contnue up with the outer track of the helix. This same track can also be used from staging (as if Portland) can head all the way up to North COnway. Technically that is not a correct connectio as the track would connect at Intervale north of North Conway, so the design for the upper level when that gets designed may use a hidden track to bypass Conway and connect before Bartlett.
By virtue of the turntables at both Dover and Wakefield, power could be turned for locals from Dover to work much of the second level, whereas through trains could continue to Madison and points north.