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Borzecki 2RB

The Borzecki 2RB is a Polish air-cooled, four-cylinder, horizontally opposed, two-stroke, piston engine designed and built by Jozef Borzecki for use in motor gliders. It was designed by J. Borzęcki out of two connected Riedel starter engines from German Junkers Jumo 004 turbojet engine from World War II.
First bench tested in 1970 the 2RB can be used in both tractor and pusher configuration, and the 24 hp (18 kW) engine was first flown in 1972 in his own design motor glider, the Borzecki Alto-Stratus.
Type: Air-cooled four-cylinder horizontally opposed two-stroke piston engine
Bore: 70 mm (2.76 in)
Stroke: 35 mm (1.38 in)
Displacement: 33 cu in (540 cc)
Length: 450 mm (17.7 in)
Width: 250 mm (9.8 in)
Height: 260 mm (10.2 in)
Dry weight: 15 kg (33 lb)
Designer: Jozef Borzecki
Fuel system: Jawa 250 motor-cycle carburettor
Fuel type: Mixture of 76-octane petrol and oil
Cooling system: Air-cooled
Power output: 24 hp (18 kW) at 6,000 rpm
Compression ratio: 7.2:1





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