The Büttner Crazy Plane is a family of German

paramotor Paramotor is the generic name for the harness and propulsive portion of a powered paraglider ("PPG"). There are two basic types of paramotors: foot launch and wheel launch. Foot launch models consist of a frame with harness, fuel tank, engine, ...

s designed by Gerald Büttner and produced by

Büttner Propeller Büttner Propeller, also known as Gerald Büttner - Obernkirchen, is a German aircraft manufacturer based in Obernkirchen and founded by Gerald Büttner. The company specializes in the design and manufacture of powered parachutes, paramotors a ...

Obernkirchen Obernkirchen () is a town in the district of Schaumburg, in Lower Saxony, Germany. It is situated approximately 8 km southwest of Stadthagen, and 15 km east of Minden. Obernkirchen is a small town in the shadows of the Bückeberg, a h ...

for

powered paragliding Powered paragliding, also known as paramotoring or PPG, is a form of ultralight aviation where the pilot wears a back-pack motor (a paramotor) which provides enough thrust to take off using a paraglider. It can be launched in still air, and on ...

. The aircraft are supplied complete and ready-to-fly.Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', page 66. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X

Design and development

The Crazy Plane line was designed to comply with the US

FAR 103 Ultralight Vehicles Ultralight aircraft in the United States are much smaller and lighter than ultralight aircraft as defined by all other countries. In the United States, ultralights are described as "ultralight vehicles" and not as aircraft. They are not req ...

rules as well as European regulations. It features a

paraglider Paragliding is the recreational and competitive adventure sport of flying paragliders: lightweight, free-flying, foot-launched glider aircraft with no rigid primary structure. The pilot sits in a harness or lies supine in a cocoon-like ' ...

-style wing, single-place or two-place-in-

tandem Tandem, or in tandem, is an arrangement in which a team of machines, animals or people are lined up one behind another, all facing in the same direction. The original use of the term in English was in ''tandem harness'', which is used for two ...

accommodation and a single engine in pusher configuration with a

reduction drive A reduction drive is a mechanical device to shift rotational speed. A planetary reduction drive is a small scale version using ball bearings in an epicyclic arrangement instead of toothed gears. Reduction drives are used in engines of all kinds ...

and a diameter

designed propeller. 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.

Variants

;Crazy Plane 1 :Model with a Solo engine in pusher configuration with a 2.85:1 ratio

and a diameter propeller. The fuel tank capacity is , with optional. Later called the Crazy Plane 1 S (for "Solo" engine). ;Crazy Plane 1 C :Model with a Solo engine in pusher configuration with a 2.85:1 ratio

and a diameter propeller. The fuel tank capacity is , with optional. Later called the Crazy Plane 1S (for "Solo" engine). ;Crazy Plane 2 :Model with a Solo engine in pusher configuration with a 3.05 ratio reduction drive and a diameter propeller. The fuel tank capacity is . Later called the Crazy Plane 2 S (for "Solo" engine). ;Crazy Plane 3 :Model with a Solo engine in pusher configuration with a 3.25 ratio reduction drive and a diameter propeller. The fuel tank capacity is . Later called the Crazy Plane 3 S (for "Solo" engine). ;Crazy Plane 3 H :Model with a Hirth F33 engine. ;Crazy Plane 4 :Model with a Solo engine in pusher configuration with a 3.25 ratio reduction drive and a diameter propeller. The fuel tank capacity is . ;Crazy Plane Duo :Two place model with a Hirth F33 engine in pusher configuration with a 2.8:1 ratio reduction drive and a diameter propeller. The fuel tank capacity is , with optional. ;Crazy Plane Voyager 2 S :Model with a Solo engine that folds to a smaller packing size. ;Crazy Plane Voyager 3 C :Model with a Cors'Air M21Y engine that folds to a smaller packing size. ;Crazy Plane Voyager 3 H :Model with a Hirth F33 engine that folds to a smaller packing size. ;Crazy Plane Voyager 3 S :Model with a Solo engine that folds to a smaller packing size.

Specifications (Crazy Plane Duo)

References

External links

* {{DEFAULTSORT:Buttner Crazy Plane Crazy Plane 2000s German ultralight aircraft Single-engined pusher aircraft Paramotors