Recreational Power Engineering

• SeriesF-33 2 cycle 28hp

One little powerhouse of an engine. At only 35 lbs. this is one of the lightest singles you'll find anywhere. With 25ft. lbs. of torque, this engine packs enough punch to spin up the large props on your backpack parachute, tryke or legal 103 ultralight. Factory recommended TBO is rated at 1000 Hrs. @ 75% power. Standard equipment includes fuel pump, spark plugs, air filter, recoil starter, complete exhaust system and dual CDI ignition for added reliability. When ordered with optional electric start the starter solenoid and voltage rectifierregulator are included. Standard mounting is plate type from bottom of engine. An optional crankcase allows 4 point mounting (firewall forward style) from the ignition side of the case instead of from the bottom of case. This option must be special ordered and adds 2 pounds to total weight. Engine pictured above is equipped with the forward style mount, electric start, and belt drive mounted in the hanging position. The F33's are some of the lightest single cylinder engines you'll find anywhere Model: F-33 Engine Type: 2 cycle, single cylinder Bore: 76mm Stroke: 69mm Displacement: 313cc Compression: 9.5:1 HP: 28hp @ 6500rpm Torque: 25ft.lbs @ 6000rpm Ignition: Dual CDI Carburation: Single 34mm slide or optional diaphragm type or optional fuel injection Fuel Pump: Auxiliary external pneumatic (12VDC electric pump when fuel injected) Lubrication: Fuel mixed with oil @ 50:1 Rotation: Counter clockwise, viewed from output end Starter: Recoil or optional electric start - Note: Electric start only available in conjunction with belt re-drive Cooling: Free air Cooled by prop or slip stream (Optional fan cooling available on special order) Weight: 35lbs including exhaust sys. - 40lbs Wre-drive - 45lbs Welec. start Reduction System: 4V belt drive available 1.8:1, 2.2:1, & 2.5:1 ratios.(Up or down pos.) Drive Coupling: Optional centrifugal clutch available (can not be used with belt drive)

• SeriesF-36 2 cycle 15hp
• Bore70mm
• Torque19 ft.lbs @ 5200

Hirth's newest low-hp engine with complete exhaust system, re-drive, and carburetor weighs only 28 pounds. This is a single cylinder, two-stroke gasoline engine with a horizontal shaft. F36 is free air cooled by propeller with the direction of rotation being counterclockwise viewed towards PTO. Available with electric or recoil start. Belt reduction drive available in hanging (shown) or standing configurations. The F-36 incorporates an Al-Nikasil coated cylinder for superior performance and reliability. Al-Nikasil in simple terms is a nickel based material, applied in a paste form; when super heated it becomes part of the cylinder itself. Al-Nikasil provides for a super low coefficient of friction, reducing total engine heat and allowing the piston and cylinder to expand at the same rate thus providing for a seizure resistant engine. The F36 is one of the lightest single cylinder engines you'll find anywhere Model: F-36 Engine Type: 2 cycle, single cylinder Bore: 70mm Stroke: 54mm Displacement: 208cc Compression 10.6:1 HP Output: 15hp @ 6000rpm Torque: 19 ft.lbs @ 5200 Ignition: Single CDI Carburation: Single integral pumper Fuel Pump: Internal to carburetor Lubrication: Fuel mixed with oil @ 50:1 Rotation: Counter clockwise, viewed from output end Starter: Recoil , or optional12 volt electric Cooling: Free air cooled Weight: 28lbs, including reduction unit, exhaust, and recoil start Reduction Units: 4 V belt drive available in 1.8:1, 2.0:1 and 2.5:1 ratios Note:. Not available with a lighting coil generator system: