Büttner Crazy Plane

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.

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 diameter Büttner Propeller 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 20 hp Solo engine in pusher configuration with a 2.85:1 ratio reduction drive and a 115 cm diameter propeller. The fuel tank capacity is 5 L, with 10 L optional. Later called the Crazy Plane 1 S (for "Solo" engine).


 * Crazy Plane 1 C
 * Model with a 20 hp Solo engine in pusher configuration with a 2.85:1 ratio reduction drive and a 115 cm diameter propeller. The fuel tank capacity is 5 L, with 10 L optional. Later called the Crazy Plane 1S (for "Solo" engine).


 * Crazy Plane 2
 * Model with a 20 hp Solo engine in pusher configuration with a 3.05 ratio reduction drive and a 120 cm diameter propeller. The fuel tank capacity is 10 L. Later called the Crazy Plane 2 S (for "Solo" engine).


 * Crazy Plane 3
 * Model with a 20 hp Solo engine in pusher configuration with a 3.25 ratio reduction drive and a 124 cm diameter propeller. The fuel tank capacity is 10 L. Later called the Crazy Plane 3 S (for "Solo" engine).


 * Crazy Plane 3 H
 * Model with a 30 hp Hirth F33 engine.


 * Crazy Plane 4
 * Model with a 20 hp Solo engine in pusher configuration with a 3.25 ratio reduction drive and a 135 cm diameter propeller. The fuel tank capacity is 10 L.


 * Crazy Plane Duo
 * Two place model with a 30 hp Hirth F33 engine in pusher configuration with a 2.8:1 ratio reduction drive and a 124 cm diameter propeller. The fuel tank capacity is 5 L, with 10 L optional.


 * Crazy Plane Voyager 2 S
 * Model with a 20 hp Solo engine that folds to a smaller packing size.


 * Crazy Plane Voyager 3 C
 * Model with a Cors'Air M21Y 24 hp engine that folds to a smaller packing size.


 * Crazy Plane Voyager 3 H
 * Model with a 30 hp Hirth F33 engine that folds to a smaller packing size.


 * Crazy Plane Voyager 3 S
 * Model with a 20 hp Solo engine that folds to a smaller packing size.