Hirth 3502 video, Hirth 3503 video interview with Recreational Power on the Hirth 3502 and 3503 60 and 60 hp aircraft engines.

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Hirth 3503 70 horsepower water cooled aircraft engine - Video interview with Recreational Power.
Recreational Power, the U.S. distributor for the Hirth line of aircraft engines unveiled their latest additions the 3502 and 3503.

These engines have been specifically designed so that they will mount right into an aircraft currently using a Rotax 582.

The 3502 produces 60hp at only 5000 rpm while building an impressive torque of 62 ft lbs. at 4750 rpm. The 3503 produces 70 HP at 6500 rpm and 57 lbs of torque at 6000 rpm.

The engines are available in both carbureted or optional fuel injected versions, oil injection is also available as an option.

Weight for a complete engine package, which includes engine, gear box, electric start and exhaust is just over 100 lbs.

Various exhaust and gear box ratio combinations are available.

Hirth aircraft engine factory recommended TBO is rated at 1200 Hrs. @ 75% power.

Model:

 3502

Carburation:

 Dual 34mm slide or optional electronic fuel injection

Engine Type:

 2 cycle, two cylinder

Fuel Pump:

 Auxiliary external pneumatic - 12VDC with fuel injection

Bore:

 76mm Lubrication: Fuel mixed with oil @ 50:1 /Blue Max @100:1 or optional oil injection

Stroke:

 69mm Rotation: Counter clockwise, viewed from output end

Displacement:

 625cc Starter:
Alternator:		 12 volt electric, recoil or both
250 watt/20 amp alternator standard

Compression:

 9.5:1 Cooling: Water cooled.

HP Output:

 60hp @ 5000rpm Weight: 79 lbs-not including radiator & coolant. Optional gearbox adds 19 lbs.

Torque:

 62ft/lbs @ 4750rpm Reduction Units: G-50 gearbox available in 2.16:l, 2.29:l, 2.59:l, 3.16:l and 3.65:l ratios.

Ignition:

 Dual CDI
(Capacitive digital Ign.)		 Drive Coupling: Elastomeric dampener or optional centrifugal clutch.
 

For a web video interview on the latest Hirth engines subscribe to the Ultralight Flyer Web Video Magazine.
For a web video interview on the latest Hirth engines
subscribe to the Ultralight Flyer Web Video Magazine.
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