Büttner Crazy Flyer

The Büttner Crazy Flyer (also called the Crazy Flier) is a family of one and two-seat German powered parachutes designed and produced by Büttner Propeller of Obernkirchen. The aircraft are supplied complete and ready-to-fly, but without wings.[1]

Crazy Flyer
Role Powered parachute
National origin Germany
Manufacturer Büttner Propeller
Status In production (2015)
Unit cost
€14.543 (Crazy Flyer 2, less wing, 2004)

Design and development

The Crazy Flyer 2 two-seater was designed to comply with the Fédération Aéronautique Internationale microlight category, including the category's maximum gross weight of 450 kg (992 lb). The Crazy Flyer 2 features two-seats-in-tandem accommodation, tricycle landing gear and a single 53 hp (40 kW) Hirth 2704 engine in pusher configuration.[1]

The aircraft carriage is built from triangulated bolted aluminium tubing. The main landing gear incorporates spring rod suspension. A variety of parachute-style wings from different manufacturers can be used.[1]

Variants
Crazy Flyer 1
Single seat version powered by a Hirth F33 30 hp (22 kW) motor[1]
Crazy Flyer 2
Two seat version powered by a Hirth 2704 53 hp (40 kW) motor[1]

Specifications (Crazy Flyer 2)

Data from Bertrand[1]

General characteristics

  • Crew: one
  • Capacity: one passenger
  • Empty weight: 87 kg (192 lb)
  • Fuel capacity: 30 litres (6.6 imp gal; 7.9 US gal)
  • Powerplant: 1 × Hirth 2704 twin cylinder, two-stroke, air-cooled aircraft engine, 40 kW (53 hp)
  • Propellers: 4-bladed composite ground adjustable

Performance

  • Maximum speed: 52 km/h (32 mph, 28 kn)
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References
  1. Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 80. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X
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