My current project is a library, check it out!
Here are some other pictures:
This isn't modeled after anything in particular except that it is a steam engine and I stole the idea of the drive wheels from Ben Fleskes. You should also notice the front boiler is basically 4-wide, the center is 5-wide and the rear is 6-wide.
I particularly like the hoses--corners are fun to watch. The pistons are attached to the "unpowered" wheels so they turn going around corners.
