Radne Raket 120

The Radne Raket 120 (English: 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.^{[1][2][3][4][5]}

Raket 120
Type	Single cylinder, two-stroke
National origin	Sweden
Manufacturer	Radne Motor AB
Major applications	Powered hang gliders

Design and development

The Raket 120 features electronic ignition and a Walbro carburetor. It weighs 6.8 kg (15 lb) and, due to its 13,000 rpm redline usually drives a propeller through a 3.6:1 reduction drive. The engine is equipped with a centrifugal clutch to allow running the engine without turning the propeller.^[1][2][4]

Variants

Raket 120 Aero

Model with recoil starter.^[2]

Raket 120 Aero ES

Model with electric starter.^[3]

Applications

• Adventure R series
• Aerosport OY Spider
• Airtime Explorer
• Av8er Observer Light
• Av8er Orbiter Lite
• Bilsam Sky Walker
• Blue Yonder EZ Fun Flyer
• Dynamic Sport Rocket
• Flylight Doodle Bug
• Paramotor Mosquito
• Paratour SD 120
• Pegasus Booster
• Rad MXL
• Rad RXL
• Rad SXL Custom
• Russian Gyroplanes Gyros-1 Farmer (aux engine)
• Russian Gyroplanes Gyros-2 Smartflier (aux engine)
• Skyrunner Light
• Spartan BP Parawing
• Sperwill 120
• Swedish Aerosport Mosquito
• Time To Fly Racket
• Walkerjet Spider
• Wasp SP Mk2
• Winds Italia Raven

Specifications (Raket 120 Aero)

Data from Radne, Wasp Systems and The World Directory of Leisure Aviation 2011-12^[1][2][4]

General characteristics

• Type: two-stroke, single cylinder
• Bore: 60 mm (2.4 in)
• Stroke: 42 mm (1.7 in)
• Displacement: 118.8 cc (7.2 cu in)
• Length: 219 mm (8.6 in)
• Width: 234 mm (9.2 in)
• Height: 171 mm (6.7 in)
• Dry weight: 6.8 kg (15 lb)

Components

• Oil system: premixed 4% oil to fuel, 25:1
• Cooling system: air cooled
• Reduction gear: 3.6:1 belt drive and centrifugal clutch

Performance

• Power output: 14 hp (10 kW) at 9000 rpm
• Compression ratio: 10:1
• Fuel consumption: 1.15 to 2 litres (0.25 to 0.44 imp gal; 0.30 to 0.53 US gal) per hour