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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 rectifier/regulator 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.
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Model: |
F-33 |
Carburation: |
Single 34mm slide or optional diaphragm type or optional fuel injection |
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Engine Type: |
2 cycle, single cylinder |
Fuel Pump: |
Auxiliary external pneumatic (12VDC electric pump when fuel injected) |
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Bore: |
76mm |
Lubrication: |
Fuel mixed with oil @ 50:1 |
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Stroke: |
69mm |
Rotation: |
Counter clockwise, viewed from output end |
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Displacement: |
313cc |
Starter: |
Recoil or optional electric start - Note: Electric start only available in conjunction with belt re-drive |
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Compression: |
9.5:1 |
Cooling: |
Free air Cooled by prop or slip stream (Optional fan cooling available on special order) |
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HP |
28hp @ 6500rpm |
Weight: |
35lbs including exhaust sys. - 40lbs W/re-drive - 45lbs W/elec. start |
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Torque: |
25ft.lbs @ 6000rpm |
Reduction Sys.: |
4V belt drive available 1.8:1, 2.2:1, & 2.5:1 ratios.(Up or down pos.) |
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Ignition: |
Dual CDI |
Drive Coupling |
Optional centrifugal clutch available (can not be used with belt drive) |
Picture of F33 installed in Ison Air Nison Easy - Picture 1
Picture of F33 installed in Ison Air Nison Easy - Picture 2
Picture of twin F33's installed in Para Ski PPC - Picture 1
Picture of twin F33's installed in Para Ski PPC - Picture 2
Picture of F33 installed in Mitchel Wing
Picture of F33 installed in Windrose Motor Glider
Picture of F33 installed in Paladin Sparrow PPC
F-33 on Backpack PPC picture #1. picture#2.
F-33 on Backpack PPC picture #3. picture#4.
Picture of 4 F33's installed in Hummingbird Flying Platform
Picture of F-33 installed in Skymaster PPC pic#1. pic#2. pic#3.
Picture of F-33 installed in Para Ski PPC pic#1. pic#2. pic#3.
Picture of F-33 installed in Trikasoarus. pic#2. pic#3.
Trikasoarus rear view. Top view. side view.
Picture of F-33 installed in Challenger 103 Ultralight. Rear view. Right side.
