Free your aircraft from:

Vibration: Our engines run smoother because there are no reciprocating pistons.

Premium fuel costs: Our engines run on regular car gasoline; they do not require high octane premium or avgas.

High cost parts: Our engines are made in the USA. There are no extra charges to have parts shipped from overseas, nor are the costs boosted by exchange rates.

High overhaul costs: When TBO arrives, we offer a one day turn-around on an overhaul at a price that is a fraction of the cost of the competition. See the chart below. We can do this because there are so few parts on this engine.

Manual air-fuel mixture controls: Our engines are computer -controlled with altitude compensation. Start them and fly. No pilot babysitting the engine to keep it from overheating, or coaching mileage out of it.

Rotamax Skypower 65 Aviation Engine - Ultralight Market Max Horsepower Cruise Horsepower Fuel Burn* Weight** Price w/Gear PSRU Overnight Rebuild *** 65 hp @ 6,500 rpm 55 hp @ 5,500 rpm 2.2 - 3.1 gph 110 lbs $7,995 $2,495 New dual spark, dual ignition, carbureted and water cooled aviation engine. This engine produces as much horsepower as a 2 piston two stroke Rotax 582. Its TBO is 500 hours, 200 more than the 582. But it has several hundred fewer parts to wear out, or fail, or need replacement, and it does not vibrate. Buy it for four-stroke reliability, no vibration, regular gas fuel economy, low emissions, and extended life span. You will realize a much lower total cost of ownership. Detailed diagram, click here.

Rotamax Skypower 120 Aviation Engine - SLSA Market Max Horsepower Cruise Horsepower Fuel Burn* Weight** Price w/Gear PSRU Overnight Rebuild *** 120 hp @ 5,800 rpm 110 hp @ 5,300 rpm 4.0 - 6.1 gph 145 lbs $15,995 $4,995 This new engine is fuel injected, has dual CDI ignition, dual rotor, dual spark plugs per rotor, and produces 20 more horsepower than a Rotax 912 ULS or a Continental O-200. Yet it weighs little more than the Rotax and weighs over 40 lbs less than the Continental. It weighs 160 lbs less than a Subaru 2.5 engine with a PSRU and similar horsepower. It is fuel injected with altitude compensation and water cooled for longer engine life and reduced pilot load. Its 1700 hour TBO is 200 hours longer than the Rotax 912, and when the overhaul is needed, it will cost a fraction of what a Rotax or Continental overhaul costs. This, along with the ability to use regular gasoline, instead of premium should really appeal to flight schools by greatly lowering their costs. The higher horsepower should appeal particularly for STOL aircraft and also for sea planes who need to break free from the water. Detailed diagram, click here.

Rotamax Skypower 180, Turbocharged Aviation Engine - High Performance Experimental Market Max Horsepower Cruise Horsepower Fuel Burn* Weight** Price wo/PSRU Overnight Rebuild *** 180 hp @ 5,500 rpm 170 hp @ 5,000 rpm 8.1 - 10.2 gph 190 lbs $19,995 $17,495 $9,995 This aviation engine is urbocharged and fuel injected with altitude compensating computer control, dual syncronized spark per rotor, dual ignition, and the option of a gear PSRU. Rotax has no options at this horsepower. The comparable horsepower Lycoming engine weighs hundreds of pounds more, has a much larger area to cowl, and costs more. Yet the Lycoming still uses old-fashioned pilot-controlled air-fuel mixture. Our modern engine, has only three moving parts, and it will cost a tiny fraction to rebuild at TBO and it will run on lower cost regular gasoline. A remanufactured Subaru will weigh a hundred lbs more, is wider to cowl, and only has single spark plugs and ignition, and yet will cost more. Why pay more to get a much lower useful load and less reliability? Detailed diagram, click here.