The Walkerjet Spider is a Czech paramotor that was designed by Victor Procházka and produced by

Walkerjet Walkerjet is a Czech aircraft manufacturer based in Tatiná and founded by Victor Procházka. The company specializes in the design and manufacture of paramotors in the form of ready-to-fly aircraft for the US FAR 103 Ultralight Vehicles rules a ...

Třemošná Třemošná (; german: Tschemoschna) is a town in Plzeň-North District in the Plzeň Region of the Czech Republic. It has about 5,100 inhabitants. Administrative parts Village of Záluží is an administrative part of Třemošná. Geography Tře ...

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 ...

. Now out of production, when it was available the aircraft was supplied complete and ready-to-fly.Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', page 76. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X

Design and development

The Spider 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 requ ...

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 'po ...

-style wing, single-place accommodation and a single

Radne Raket 120 The Radne Raket 120 ( en, Rocket) is a lightweight single cylinder, two-stroke aircraft engine used for powered hang gliders, paramotors and ultralight aircraft that is built by Radne Motor AB of Haninge, Sweden.Bayerl, Robby; Martin Berkemeie ...

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 nor ...

with a 3:1 ratio reduction drive and a diameter two-bladed wooden propeller. The fuel tank capacity is . The aircraft is built from a combination of bolted

aluminium Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. I ...

and

4130 steel 41xx steel is a family of SAE steel grades, as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel (common ...

tubing. The propeller cage can be dismantled for ground transport or storage. 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.

Specifications (Spider)

References

{{Walkerjet aircraft

Spider Spiders ( order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species ...

2000s Czech ultralight aircraft Single-engined pusher aircraft Paramotors