Walter Scolar



The Walter Scolar was a Czechoslovakian nine-cylinder, aircooled, radial engine for powering light aircraft that first ran in 1936. With a displacement of 8 litres (490 cu in), it produced 132 kW (180 hp) at 2,500 rpm.
Beneš-Mráz Beta-Scolar


Type: 9-cylinder radial piston engine
Bore: 105 mm (4.13 in)
Stroke: 100 mm (3.94 in)
Displacement: 7.8 L (488 cu in)
Dry weight: 155 kg (342 lb)
Valvetrain: One intake and one exhaust valve per cylinder
Fuel system: Carburettor
Fuel type: Petrol
Cooling system: Air-cooled
Power output: 132 kW (180 hp) at 2,500 rpm
Compression ratio: 5.4:1
Power-to-weight ratio: 0.85 kW/kg (0.52 hp/lb)