Greetings Train Tech,
I'd been looking to build something using the Lego narrow gauge track for some time. Eventually, I settled on building a "single Fairlie" locomotive:
Fairlie locomotives have their driving wheels on bogies, allowing them to negotiate sharp curves, which makes them useful on narrow-gauge railroads. Most of them are double-ended, with a double-ended boiler and two powered bogies; this model is loosely based on the "single Fairlie" Taliesin of the Ffestiniog Railway in Wales.
The entirety of the boiler was built with SNOT, and connects to a 1x6 technic beam in the cab (the connection point is the seam at the very front of the cab). The model was party designed in Lego Digital Designer, and partly done by just messing around in real life. It features a detailed backhead, something I haven't put in any of my locomotives before:
Of course, after building a locomotive, I figured I should have some rolling stock to go with it...
The crate on the flatcar is from 4563 Load N' Haul Railroad (with the tractor in John Deere colors). The boxcar was essentially built around a 9V battery box and an old 9V motor, and provides power for the entire consist:
Full Brickshelf gallery here (once moderation finishes). Let me hear your thoughts!