157 inch ASK-21 (Global Warehouse)

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    ASK-21 1/4 scale glider (Packing box: 203x43x36cm)

    Regarding the quality difference comparing few other brands on the market, please visit the forum:





    Wing Span:

    157.5 inch (4000 mm)


    78 inch (1981 mm)

    Wing area:

    10sq. ft (93 sq dm)

    Wing Loading:

    20 oz/sq. ft (61.3 g/sq. dm)

    Flying Weight:

    12.5 lbs (5.7 kg)


    6ch & 4 servos

    Servo Recommendations: :

    100 oz-sq-in minimum


    • Fiberglass fuselage and built up wood wings with lite-ply and balsa construction
    • Painted fiberglass fuselage with film
      covered wings
    • 2 piece wing
    • Pre-fitted canopy which is movable
    • Easy to build. Blind nuts and wood formers
      are installed
    • High quality solid steel wing tube


    The ASK 21 is a glass reinforced plastic (GRP) two-seater mid-wing glider aircraft with a T-tail. The ASK 21 is designed primarily for beginner instruction, but is also suitable for cross country flying and aerobatic instruction.

    The ASK 21 was designed by Rudolf Kaiser to replace the popular ASK 13, providing a modern two-seat aircraft bridging the gap between initial training and single-seat performance flying. The ASK 21 is the first full-GRP two-seater produced by Scheleicher, flying for the first time in February 1979 (6.2.1979). Production also began in 1979, remaining in production to this day (Sep 2012), with nearly 900 units completed. In December 2004 the ASK 21 Mi, a self-launching version, made its first flight

    General characteristics

    • Crew: 2 Pilots
    • Length: 8.35 m (27.39 ft 5 in)
    • Wingspan: 17.00 m (55.77 ft 9 in)
    • Height: 1.55 m (5.08 ft 1 in)
    • Wing area: 17.95 m2 (193.21 ft2)
    • Aspect ratio: 16.1
    • Wing profile: FX S02-196 / FX 60-126
    • Empty weight: ca. 360 kg (794 lb)
    • Gross weight: 600 kg (1,323 lb)


    • Maximum speed: 280 km/h (174 mph)
    • G limits: +6.5/-4
    • Maximum glide ratio: 34:1
    • Rate of sink: 0.65 m/s (128 ft/min)

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