The Per Il Volo Top 80 is an Italian single cylinder,

two-stroke A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of ...

aircraft engine designed and produced by Per Il Volo of

Galliera Veneta Galliera Veneta is a '' comune'' (municipality) in the Province of Padua in the Italian region Veneto, located about northwest of Venice and about north of Padua. As of 31 December 2004, it had a population of 6,830 and an area of .All demogra ...

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 ...

. It was the first purpose-designed

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, ...

engine.Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page D-22. Cybair Limited Publishing, 2001. Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', page 73. Pagefast Ltd, Lancaster UK, 2003. ISSN 1368-485X

Design and development

The Top 80 was developed specifically for the Per Il Volo Miniplane, which was introduced in 1989. The engine uses fan-cooling and a Walbro 24 diaphragm or Dell'Orto 17.5 basin-type

carburetor A carburetor (also spelled carburettor) is a device used by an internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the venturi tube in the main meteri ...

. Designed for light weight as the overall consideration, the engine weighs , plus the exhaust system weight of . With the Walbro carburetor the Top 80 produces 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 A centrifugal clutch is an automatic clutch that uses centrifugal force to operate. The output shaft is disengaged at low rotational speed and engages more as speed increases. It is often used in mopeds, underbones, lawn mowers, go-karts, chains ...

that allows idling without turning the propeller, a useful feature in its main application on a paramotor, where it improves ground safety.

Applications

Specifications (Top 80)

References

External links

* {{Per Il Volo aircraft Air-cooled aircraft piston engines Per Il Volo aircraft engines Two-stroke aircraft piston engines