This fan was designed to be a real workhorse. Every effort was made to reduce friction to an absolute minimum while at the same time making the unit extremely reliable, maintenance free, quiet and very long lived. My fan
has many hundreds of running hours on it while at shows and in my office during summer months with no maintenance, service or repairs of any kind done, or needed.

In addition to the crankshaft running in ball bearings, the power piston rod is fitted with precision ball bearings. All of the reciprocating parts use very low friction non-metallic components and never need oiled. The hot cap is specially designed to absorb heat from the flame. The carefully shaped and angled concave fan blades improve the overall air moving efficiency.

The fan operates nicely on an alcohol flame only 1/4" diameter and 5/16" tall, moving a very respectable amount of air. During a day long run, the displacer cylinder will never get more than just lukewarm warm.

One other design consideration was to make the fan an attractive piece of machinery. You will be the judge of that!

The plans set consists of 9 sheets of drawings and 2 sheets of construction and assembly notes.

Specifications: Fan Blade Dia.: 8-3/4", Cylinder Bore: .6, Piston Stroke: 1", Overall Height: 16-1/4"  Experience Level: 4