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Open Crank Farm Engine
by: Mick Cherry

The open crank farm engine was made after I had purchased a new lathe. I thought I would build something simple just to iron out any problems.

The outcome is a terrific little engine, dead simple to make, the main frame is all made from 1/4 ally sheet screwed together. The only tricky bit was the inlet valve, it's the automatic type, and with it being a relatively slow running engine I had to get the spring strong enough to snap the valve shut, but weak enough for the piston to suck it open to allow fuel in.

Mick Cherry

Other models by Mick Cherry: Hit and Miss, Kinner Radial, Loyal Cycle Engine, Open Crank Farm Engine, Vacuum Engine.

See also: Gallery Index.