Crazy Plane
Role Paramotor
National origin Germany
Manufacturer Büttner Propeller
Designer Gerald Büttner
Status In production (2015)

The Büttner Crazy Plane is a family of German paramotors designed by Gerald Büttner and produced by Büttner Propeller of Obernkirchen for powered paragliding. The aircraft are supplied complete and ready-to-fly.[1]

Design and development

The Crazy Plane line was designed to comply with the US FAR 103 Ultralight Vehicles rules as well as European regulations. It features a paraglider-style wing, single-place or two-place-in-tandem accommodation and a single engine in pusher configuration with a reduction drive and a 115 to 135 cm (45 to 53 in) diameter Büttner Propeller designed propeller.[1]

As is the case with all paramotors, take-off and landing is accomplished by foot. Inflight steering is accomplished via handles that actuate the canopy brakes, creating roll and yaw.[1]

Variants

Crazy Plane 1
Model with a 20 hp (15 kW) Solo engine in pusher configuration with a 2.85:1 ratio reduction drive and a 115 cm (45 in) diameter propeller. The fuel tank capacity is 5 litres (1.1 imp gal; 1.3 US gal), with 10 litres (2.2 imp gal; 2.6 US gal) optional. Later called the Crazy Plane 1 S (for "Solo" engine).[1][2]
Crazy Plane 1 C
Model with a 20 hp (15 kW) Solo engine in pusher configuration with a 2.85:1 ratio reduction drive and a 115 cm (45 in) diameter propeller. The fuel tank capacity is 5 litres (1.1 imp gal; 1.3 US gal), with 10 litres (2.2 imp gal; 2.6 US gal) optional. Later called the Crazy Plane 1S (for "Solo" engine).[1][2]
Crazy Plane 2
Model with a 20 hp (15 kW) Solo engine in pusher configuration with a 3.05 ratio reduction drive and a 120 cm (47 in) diameter propeller. The fuel tank capacity is 10 litres (2.2 imp gal; 2.6 US gal). Later called the Crazy Plane 2 S (for "Solo" engine).[1][2]
Crazy Plane 3
Model with a 20 hp (15 kW) Solo engine in pusher configuration with a 3.25 ratio reduction drive and a 124 cm (49 in) diameter propeller. The fuel tank capacity is 10 litres (2.2 imp gal; 2.6 US gal). Later called the Crazy Plane 3 S (for "Solo" engine).[1][2]
Crazy Plane 3 H
Model with a 30 hp (22 kW) Hirth F33 engine.[2]
Crazy Plane 4
Model with a 20 hp (15 kW) Solo engine in pusher configuration with a 3.25 ratio reduction drive and a 135 cm (53 in) diameter propeller. The fuel tank capacity is 10 litres (2.2 imp gal; 2.6 US gal).[1]
Crazy Plane Duo
Two place model with a 30 hp (22 kW) Hirth F33 engine in pusher configuration with a 2.8:1 ratio reduction drive and a 124 cm (49 in) diameter propeller. The fuel tank capacity is 5 litres (1.1 imp gal; 1.3 US gal), with 10 litres (2.2 imp gal; 2.6 US gal) optional.[1]
Crazy Plane Voyager 2 S
Model with a 20 hp (15 kW) Solo engine that folds to a smaller packing size.[2]
Crazy Plane Voyager 3 C
Model with a Cors'Air M21Y 24 hp (18 kW) engine that folds to a smaller packing size.[2]
Crazy Plane Voyager 3 H
Model with a 30 hp (22 kW) Hirth F33 engine that folds to a smaller packing size.[2]
Crazy Plane Voyager 3 S
Model with a 20 hp (15 kW) Solo engine that folds to a smaller packing size.[2]

Specifications (Crazy Plane Duo)

Data from Bertrand[1]

General characteristics

References

  1. 1 2 3 4 5 6 7 8 9 10 Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 66. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X
  2. 1 2 3 4 5 6 7 8 9 "Rucksackmotoren". crazy-plane.de. Retrieved 15 October 2015.
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