Joe Webster, Annapolis, MD jbwebst@cablespeed.com 12/272004
1 Cylinder, diesel
I guess you could call this engine "The Next Generation EZE". It's
based loosely on Tom Crompton's EZE engine series, but I made a CAD model
of it and incorporated a few cosmetic / functionality improvements (most
notably in the front housing and venturi area).
I had seen a few photos of the "original" engine and only had a general idea of
scale, so I was pretty much working from scratch. The engine I came up with is
an .056 c.i. compression ignition model airplane engine with a bore and stroke
of .438" x .375". It is made mostly from 3/4" sq. aluminum bar stock with a
lapped cast iron piston riding in a steel sleeve. As the name implies, it is an
relatively easy engine to build, and a sample could be build from most
machinist's scrap bins.
I completed and first ran the engine on December 18th, 2004 after about 3 leisurely weeks of evenings of building. It runs well and spins a 6X4 Master Airscrew over 8500 RPM.
I am considering building a twin cylinder version using the same "modular"
concept as the original and am open to ideas or suggestions. If anyone wants to
discuss the single or twin cylinder versions, please feel free to contact me.
Copyright 2004, Florida Association of Model Engineers and engine builder as noted above, All rights reserved.