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Castings by Morrison & Martin Engine Works
1895 Mery Explosion Engine
This is a 6-cycle engine that makes two exaust
strokes. It is also a double acting cylinder, it fires on both ends of the
cylinder. It is a 1/4 scale, 1.500" Bore 3.250" Stroke. This is one of the
first Merys built and ran in 1997. This engine has a lot of modifications
done to it to keep the vibration down, it is not a very well balanced engine.
For instance the piston is 1.500" x .750", this is a big slug going back and
forth. I made mine .375 long with one 1/16 wide ring on the piston. I also
put counter weights on the crank. Now it is a fabulous running engine, it
runs all day at 200 RPM. It is really a eye stopper at the shows. By the
way, this engine was built in a month and then it took me another month to get
it to run like it does now. You will notice that all of the real slow running
Merys have dual pipes. Somehow with the single pipe it doesn't clean the
combustion chamber out real good and at low speed you don't have a good
explosion in the cylinder and it will quit.
Copyright 2002, Florida Association of Model Engineers
and engine builder as noted above,
All rights reserved.