RecPower Factory Authorized Distributor for Hirth Engines
RecPower Factory Authorized Distributor for Hirth Engines Sport aviation engines for Ultralights, Homebuilts, Kitplanes, Gyrocopters, Helicopters, Powered Parachutes, Trykes, Hovercraft & Air Boats. RecPower Factory Authorized Distributor for Hirth Engines

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F-33 2-cycle 28hp

One little powerhouse of an engine. At only 35lbs 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 1000hrs @ 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.

RecPower Factory Authorized Distributor for Hirth F-33 Lightweight Aircraft Engines

Please contact Customer Service for current pricing.

The F-33 Series can be quoted with
or without the following options:
• Electric or Recoil Start
• Reduction Drive

The F-33 engine'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:
Single CDI
Carburation:
Single 34mm slide or optional diaphragm type
Fuel Pump:
Auxiliary external pneumatic
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 system; 40lbs w/re-drive; 45lbs w/electric start
Reduction System:
4V belt drive available 1.8:1, 2.2:1, & 2.5:1 ratios. (Up or down position)
Drive Coupling:
Optional Direct drive prop flange

RecPower | Hirth F-33 Lightweight Aircraft Engine Performance Graph

ENGINE DIMENSIONS PRINT

RecPower | Hirth F-33 Lightweight Aircraft Engine Dimensions Print

CUSTOMER PHOTO GALLERY

F-33 installed in Earthstar Thundergull
F-33 installed in Earthstar Thundergull


F-33 installed in Ison Air Nison Easy

F-33 installed in Ison Air Nison Easy
Picture #1 | Picture #2


Twin F-33's installed in Para Ski PPC

Twin F-33's installed in Para Ski PPC
Picture #1 | Picture #2


F-33 installed in Mitchel Wing

F-33 installed in Mitchel Wing


F-33 installed in Windrose Motor Glider
F-33 installed in Windrose Motor Glider


F-33 installed in Paladin Sparrow PPC

F-33 installed in Paladin Sparrow PPC


F-33 on Backpack PPC

F-33 on Backpack PPC
Picture #1 | Picture #2
Picture #3 | Picture #4


F-33 installed in Skymaster PPC

F-33 installed in Skymaster PPC
Picture #1 | Picture #2
Picture #3


 F-33 installed in Para Ski PPC

F-33 installed in Para Ski PPC
Picture #1 | Picture #2
Picture #3


F-33 installed in Trikasoarus

F-33 installed in Trikasoarus
Picture #1 | Picture #2
Picture #3


F-33 installed in Trikasoarus

F-33 installed in Trikasoarus
Rear View | Top View
Side View


F-33 installed in Challenger 103 Ultralight

F-33 installed in Challenger 103 Ultralight
Picture #1 | Rear View
Top View | Left Side
Right Side

4 F-33's installed in Hummingbird Flying Platform
4 F-33's installed in Hummingbird
Flying Platform


F-33 installed in Hybricraft Hovercraft

F-33 installed in Hybricraft Hovercraft
Picture #1 | Picture #2
Picture #3


F-33 on BE-LITE

F-33 on BE-LITE
Picture #1 | Picture #2
Picture #3 | Picture #4


RecPower Factory Authorized Distributor for Hirth Engines RecPower Factory Authorized Distributor for Hirth Engines
RecPower Factory Authorized Distributor for Hirth Engines