The Grand Valley's Northern Extension...
#18
Well, other than anomalies caused by somewhat careless use of a measuring tape Misngth , the upper level is about 59" above the floor. The lower level is pretty-much a sawtooth profile, varying between 36" and 44".
The tracks from lower staging, depending on which yard is used, begin at 40" or 44", then converge at a height of 42" at Negro Creek, then climb to 44" at South Cayuga. The grade to the upper level begins at the 44" height in South Cayuga.
Trains headed to Port Maitland leave South Cayuga also at 44" and drop to 38.5" at Elfrida, then, after a level stretch through town, drop again, down to 36" by the time they roll into Lowbanks. The track from there is level right to the TH&B staging tracks.
I'll probably introduce some areas of extra elevation on the upper level in order to add a stream or two, but nothing major.

Most trains, unless they're really short, will be doubleheaded, and some may also require a pusher.

Wayne
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