Szekely SR-3 / Model L
The SR-3 was specially designed for compactness and light weight. The counter-balanced crankshaft is two piece, of nickel chrome stell SAE 3140. 1 37/64 inch in diameter.
The cylinders are of close-grained nickel cast iron with the head cast integral.
Equipment suppied was carburetter, magnetos, propeller hub, oil pump, spark plugs, and wires.
A starter was available at extra cost.
Type: 3 cylinder static radial, L Head, air cooled
Rating: 40 hp at 1800 rpm
Displacement: 190 cu.in
Compression ratio: 4.8
Bore: 4 1/8 in
Stroke: 4 3/4 in
Diameter: 29 1/2 in
Weight: 117 lb dry / 142 lb complete
Fuel consumption: not more than .60 lb/hp/hr
Oil consumption: not more than .016 lb/hp/hr
Lubrication: Gear type oil and scavenger pumps
Ignition: Dual Scintilla magneto
Carburation: Stromberg, 1 ½ balanced
Spark plugs: 2 per cylinder