Per Il Volo Top 80

The Per Il Volo Top 80 is an Italian single cylinder, two-stroke aircraft engine designed and produced by Per Il Volo of Galliera Veneta for powered paragliding. It was the first purpose-designed paramotor engine.[1][2][3]

Per Il Volo Top 80
Top 80 mounted on a Per Il Volo Miniplane
Type Single cylinder, two-stroke aircraft engine
National origin Italy
Manufacturer Per Il Volo
Major applications Per Il Volo Miniplane

Design and development

The Top 80 was developed specifically for the Per Il Volo Miniplane, which was introduced in 1989.[1][2][3]

The engine uses fan-cooling and a Walbro 24 diaphragm or Dell'Orto 17.5 basin-type carburetor. Designed for light weight as the overall consideration, the engine weighs 10 kg (22.0 lb), plus the exhaust system weight of 2.6 kg (5.7 lb). With the Walbro carburetor the Top 80 produces 11 kW (14.8 hp) at 9500 rpm. Power is delivered to the two-bladed wooden propeller though a reverse-turning gear box to reduce output net torque felt by the pilot during acceleration and deceleration . The oil filled gearbox can be fitted with 22/70 gears giving a reduction ratio of 3:182, 21/71 gears giving 3.381, 20/72 gears giving 3.60, 19/73 gears giving 3.842 or 18/74 gears with a ratio of 4.111. The engine also fits a centrifugal clutch that allows idling without turning the propeller, a useful feature in its main application on a paramotor, where it improves ground safety.[1][2][3]

Applications

Specifications (Top 80)
Top 80 mounted on a Per Il Volo Miniplane

Data from Cliche, Bertrand and Per Il Volo[1][2][3]

General characteristics

  • Type: single cylinder, two-stroke aircraft engine
  • Bore: 47.7 mm (1.878 in)
  • Stroke: 44 mm (1.73 in)
  • Displacement: 80 cc (4.88 cu in)
  • Length: 24 cm (9.45 in)
  • Width: 28 cm (11.02 in)
  • Height: 29 cm (11.42 in)
  • Dry weight: 10 kg (22.0 lb), plus the exhaust system 2.6 kg (5.7 lb)

Components

  • Valvetrain: piston ported
  • Fuel system: Walbro 24 diaphragm or Dell'Orto 17.5 basin-type carburetor
  • Fuel type: auto fuel
  • Oil system: premixed oil and fuel
  • Cooling system: fan forced air
  • Reduction gear: oil filled gearbox, reduction ratios of 3:182, 3.381, 3.60, 3.842 and 4.111 available

Performance

  • Power output: 11 kW (14.8 hp) at 9500 rpm with Walbro carburettor, 10 kW (13.4 hp) at 9300 rpm with Dell'Orto carburettor
  • Power-to-weight ratio: 1:1

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References
  1. Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page D-22. Cybair Limited Publishing, 2001. ISBN 0-9680628-1-4
  2. Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 73. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X
  3. Per Il Volo (2001). "Top 80". Retrieved 1 April 2012.
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