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DLE 55 Gasoline Powered model airplane Engine with Electronic Ignition.

Two crankshaft bearings-simple design for lighter weight
Aluminum alloy crankcase
Four petal V-type reed valve bottom induction system
DLE carburetor
Fully automatic electronic ignition

Engine, spark plug, standoffs, ignition, muffler, instruction manual

2-cycle oil, mix ratio for this engine is 30 parts gas to one part
oil and must be followed exactly for warranty consideration
and optimum performance
4.8 - 6V NiMH/NiCd, or 6.6V LiFe or 7.4V LiPo battery for ignition
(separate receiver style pack can be used) (LiPo & LiFe requires
voltage regulator)
Propeller and field equipment

Output Power: 5.5 HP at 7,500 RPM
Best Performance RPM Range: 1,350 - 8,500
Maximum RPM: 8,500
Static Thrust: 14.2kg Pulling Force/100 meters altitude
12.5kg Pulling Force/1,800 meters altitude
Displacement: 3.4cu in (55.6cc)
Bore: 45mm
Stroke: 35mm
Compression Ratio: 7.6:1
Weight: Engine, 2.9lbs (1310g)
Muffler, 3.5oz (100g)
Ignition, 3.9oz (110g)
Gasoline/Oil Mixture: 30:1
Gasoline Octane Rating: 87
Recommended Propellers: 22x8, 22x10, 23x8, 23x10
Spark Plug: CM6
Distance Between Mounting Hole Centers Same Side: 2.7" (68mm)
Distance Between Mounting Hole Centers Opposite Side: 3.1" (80mm)
Height from bottom/Crankcase to top of Cylinder Head: 6.4" (162mm)
Width of Cylinder Head: 3.1" (78.8mm)
Length from Carburetor to Prop Washer: 6.2" (157mm)
Length from Carburetor to Front Bearing: 5" (127mm)
Distance Between Muffler Mounting Hole Centers: 1.6" (40mm)
Crankshaft Thread: 5mm/.8 pitch course thread