08/31/2011. Remarks by Johan Visschedijk: "The SF-25C is an improved version of the SF-25B Falke (Falcon), to which it is structurally similar. The primary difference is the use of a more powerful engine, giving an enhanced performance. Type certification was granted in September 1972. By January 1987 a total of 408 SF-25C Falkes had been built by Scheibe; a further 50 were built under license by Sportavia in Germany.

Scheibe also produced 20 SF-25C-S, with Hoffmann feathering propellers. With optional 80 hp Limbach engine, they are known as SF-25C-2000. Optional features include an additional exhaust outlet and a slower-turning propeller. With this installation the nominal noise level is reduced to less than 60 dB.

This Falke two-seat powered glider was built in 1973."

Type: Side-by-side two-seat motor glider, particularly suitable for basic and advanced training.
Airframe: Cantilever low-wing monoplane. Forward swept wooden wings, with airbrakes and aerodynamically balanced ailerons. Fully folding wings optional. Fabric covered welded steel tube fuselage; forward section coated with laminated glass fiber. Wooden tail unit. Non-retractable rubber sprung mono-wheel with brake and aerodynamic fairing; steerable tail wheel; sprung outrigger stabilizing wheel under each wing. Alternative twin-wheel main gear available optionally, with streamline wheel fairings.
Power plant: One 65 hp Limbach SL 1700 EA modified Volkswagen engine, or 80 hp L 2000 EA in SF-25C-2000, driving a two-blade propeller. Feathering propeller optional. Electric starter. Fuel in single fuselage tank, capacity 14.5 gal (55 l) standard, 21.1 gal (80 l) optional.
System: 12V electrical system.

Span: Aspect ratio: Length: Height: Wing area: Weight empty: Max take off weight: Max wing loading: Max power loading: Best glide ration, unpowered: Min rate of sink, unpowered: Max level speed: Max cruise speed: Stall speed: Climb at sea level: Service ceiling: Take off run: Landing run: Range:

SF-25C 50 ft 2.5 in (15.30 m) 12.9 24 ft 11.25 in (7.60 m) 14 ft 9.2 in (1.85 m) 195.9 sq.ft (18.20 sq.m) 882 lb (400 kg) 1,433 lb (650 kg) 7.32 lb/sq.ft (35.71 kg/sq.m) 22.05 lb/hp (10.00 kg/hp) 23-24 3.28 ft (1.00 m)/sec 112 mph (180 kmh) 99 mph (160 kmh) 41 mph (65 kmh) 453 ft (138 m)/min 16,400 ft (5,000 m) 590 ft (180 m) 328 ft (100 m) 435 mls (700 km)

SF-25C-2000 50 ft 2.5 in (15.30 m) 12.9 24 ft 11.25 in (7.60 m) 14 ft 9.2 in (1.85 m) 195.9 sq.ft (18.20 sq.m) 882 lb (400 kg) 1,433 lb (650 kg) 7.32 lb/sq.ft (35.71 kg/sq.m) 17.91 lb/hp (8.12 kg/hp) 23-24 3.28 ft (1.00 m)/sec 118 mph (190 kmh) 106 mph (170 kmh) 41 mph (65 kmh) 630 ft (192 m)/min - 328 ft (100 m) - 435 mls (700 km)