Cumberland Model Engineering. The Chassis The biggest challenge with George's project has been how to come up with a plausible chassis without going to all the trouble of building everything from scratch.
The solution that George arrived at was to use two 1:29 scale Accucraft Pennsylvania Railroad K4s mechanisms since their axle spacing between the drivers was very, very close to the L-77's 5'-0" in 1:20.32. This is the point at which I got involved in the project, and my job has been to regauge and modify them into the high and low pressure units of a mini-mallet. I began by drawing both the Accucraft frames and frame spreaders (as is) in AutoCAD and then doing the same for the 2-6-6-0's frame, cylinders and crosshead guide spreaders in both elevation and section views (or at least as best as one could estimate these from the somewhat sketchy 0-6-6-0 drawings posted above). How to draw Steampunk Machines. There are a variety of different types of steam engines.
They basically are just pistons in which steam pushes, and in a variety of ways via linkages, all end up with an axle spinning in a circular motion. Some steam engines can be reversed. There are three ways that this can work: 1) Engine can be reserved by linkages to change how the steam is piped in by a Stephenson's linkage, which usually looks like some sort of lever, complex looking linkages, with an arc piece that guides the lever. 2) For double cylinders, a valve can reverse the direction of the steam flow, and therefore the engine runs backwards. 3) clutch driven, the engines only runs in one direction, but with the use of gears, the drive shaft can be reversed. Flywheel This is usually a large heavy wheel, and it does have a purpose. Steam & Gas Engines.