UltraVair engine for ultralight aircraft, UltraVair engine for experimental aircraft, UltraVair engine for experimental light sport aircraft (ELSA), Lightsport Aircraft Pilot News newsmagazine.


Lightsport Aircraft Pilot is a directory of aircraft that generally fit into what are described as ultralight aircraft, advanced ultralight aircraft, light sport aircraft, experimental light sport aircraft, experimental aircraft, amateur built aircraft, ELSA or homebuilt aircraft in the United States and Canada. These include weight shift aircraft, more commonly known as trikes, powered parachutes, and powered para-gliders.

UltraVair engine for ultralight, experimental lightsport, amateur built aircraft.

Manufacturer
UltraVair
1632 Memorial Drive
Cedar Rapids Iowa 52403

UltraVair engines of Cedar Rapids Iowa had their "1/3 is greater than a 1/2" Corvair engine conversion on display mounted to the front of a Mini Max at Airventure 2003.

The UltraVair is made from  2 of the  6 cylinders of a General Motors Corvair engine - thus the "1/3 is greater." 

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It produces 35 hp at 3500 rpm using stock pistons, crankshaft and camshaft. "The stock Corvair has hydraulic lifters and strong through-bolts holding the case halves together. It also has the exhaust ports facing down and a removable top cover and oil pan. No special head or case boring is needed. This eliminates expense and the removal of material that weakens engine components."
Bore 3.437 inches (87.3 mm)
Stroke 2.94 inches (74.7mm)
Displacement 54.6 cubic inches (894cc)
Width 27.5 inches
Weight 80 lbs (includes intake and magneto)
Horsepower 35 @ 3,500 rpm (estimated)

The UltraVair has single ignition, uses a side-draft carburator from a Harley Davidson motorcycle and weighs 80 pounds dry.
According the factory the engine "runs very smooth due to the fact that the stock pistons and rods are very light, reducing reciprocating weight.  The crankshaft is modified with weld-on counterweights."

Corvair parts are readily available from several suppliers and total engine cost is perfect for the homebuilder budget

UltraVair engine for ultralight aircraft, UltraVair engine for experimental aircraft, UltraVair engine for experimental light sport aircraft (ELSA), Lightsport Aircraft Pilot News newsmagazine.
UltraVair engine for ultralight - experimental lightsport aircraft

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