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 of
Obernkirchen for
powered paragliding. 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 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), glider aircraft with no rigid primary structure. The pilot sits in a :wikt:harness, harness o ...
-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
In an aircraft with a pusher configuration (as opposed to a tractor configuration), the propeller(s) are mounted behind their respective engine(s). Since a pusher propeller is mounted behind the engine, the drive shaft is in compression in no ...
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
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 Solo engine in
pusher configuration
In an aircraft with a pusher configuration (as opposed to a tractor configuration), the propeller(s) are mounted behind their respective engine(s). Since a pusher propeller is mounted behind the engine, the drive shaft is in compression in no ...
with a 2.85:1 ratio
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 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
In an aircraft with a pusher configuration (as opposed to a tractor configuration), the propeller(s) are mounted behind their respective engine(s). Since a pusher propeller is mounted behind the engine, the drive shaft is in compression in no ...
with a 2.85:1 ratio
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 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
The Hirth F-33 is a single cylinder, two stroke, carburetted aircraft engine designed for use on ultralight aircraft, including powered paragliders and ultralight trikes. the engine is noted for its extremely light base weight of . It is ma ...
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
The Hirth F-33 is a single cylinder, two stroke, carburetted aircraft engine designed for use on ultralight aircraft, including powered paragliders and ultralight trikes. the engine is noted for its extremely light base weight of . It is ma ...
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
The Hirth F-33 is a single cylinder, two stroke, carburetted aircraft engine designed for use on ultralight aircraft, including powered paragliders and ultralight trikes. the engine is noted for its extremely light base weight of . It is ma ...
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
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{{DEFAULTSORT:Buttner Crazy Plane
Crazy Plane
2000s German ultralight aircraft
Single-engined pusher aircraft
Paramotors