Author Topic: Photo of "Farm Boy"  (Read 6494 times)

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Photo of "Farm Boy"
« on: October 13, 2009, 09:13:11 PM »
"Farm Boy is a bar stock engine requiring no expensive castings but is designed to look as though it was made from castings. As seen below, it is not possible to know it was made from bar stock. It is mostly aluminum alloy which is much stronger than castings and machines better as well. As a hit-&-miss type engine it needs no cooling system and will operate for long periods on a small amount of fuel. Running time is 12 hours on 2 ounces (59cc) of fuel. Even after all day runs the engine only gets slightly warm. The engine is not difficult to build, yet offers some interesting challenges to keep an experienced builder interested. Farm Boy is designed to use an "O" ring on the piston instead of normal cast iron piston rings (the builder can use cast iron rings if desired). This results in near perfect compression from the first run and because there is very little cylinder friction, Farm Boy will coast from 20 to as many as 30 revolutions between firing. " - Jerry

Here's a photo of "Farm Boy" and associated plan copyright:
« Last Edit: March 07, 2012, 11:41:58 AM by ahowell »