The Rubik R-28 Kanya liaison/tug aircraft, designed 1944, was produced by the Sportarutermelo factory at Esztergom, Hungary, during 1948-9.
The R-18 has full-span Handley Page slots and larger flaps. Dual controls are fitted and construction is mixed with fabric covering.
- R-18A powered by 130 hp (97 kW) Walter Major S 6-cyl air-cooled in-line, 1 prototype
- R-18B powered by 105 hp (78 kW) Walter Minor 4-III 6-cyl in-line, 1 prototype
- R-18 series powered by Walter Minor, converted Shvetsov M-11 5-cyl radial, 10 built
Engine: Walter Major 4-1, 130 hp
Wingspan: 38 ft
Wing area: 150 sq.ft
Length: 25 ft
Height: 7 ft
Empty weight: 900 lb
Loaded weight: 1520 lb
Max speed: 110 mph
Cruise: 75 mph
Minimum speed: 38 mph
Absolute ceiling: 19,700 ft
Range: 380 mi
Seats: 2
All Aero 