DLE Engines DLE-55RA Rear Exhaust Gasoline w/EI

Tower Stock# DLEG0455  •  Manufacturer Stock# DLE55RA
DLE Engines DLE-55RA Rear Exhaust Gasoline w/EI (large view)
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Notes from our tech department:
This is the DLE 55-RA Gasoline Engine with Electronic Ignition.


High performance in a compact package
Rear exhaust for the perfect tuned pipe setup
Pitts style aluminum muffler
Newly designed piston with re-engineered skirt for less piston
weight resulting in such advantages as awesome throttle response,
more power and longer engine life
Electronic ignition is the no-hassle answer to simpler starts,
higher performance and minimal RF noise
Producing 100 more rpm than the DLE50, the DLE 55-RA comes with
engine standoffs, electronic ignition, spark plug and muffler
Two year limited warranty through Hobby Services beginning at date
of purchase


DLE 55-RA Gasoline Engine
Electronic Ignition
Pitts Muffler
DLE CM6 Spark Plug
Four Engine Standoffs with Mounting Hardware
Integrated Choke Rod Guide
Rear-mounted Carb
Instruction Manual


Gasoline with at least 87 octane rating
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 - 12V battery for ignition
(separate receiver style pack can be used) (LiPo & LiFe requires
voltage regulator)
Propeller and field equipment


Displacement: 55.6 cc (3.39 cu in)
Bore: 1.76 in (45 mm)
Stroke: 1.37" (35mm)
Compression Ratio: 7.6:1
Static Thrust: 14.5kg Pulling Force/100 meters altitude
12.8kg Pulling Force/1,800 meters altitude
Gasoline/Oil Mixture: 30:1
Gasoline Octane Rating: 87
Recommended Propellers: 22x8, 22x10, 23x8, 23x10
Weight, engine: 3.74 lb (1.33kg)
Weight, muffler: 3.17 oz (90 g)
Weight, ignition module: 5.11 oz (145 g)
Output: 5.5 hp @ 8,500 RPM
Carburetor Adjustments;
Low Speed Needle: 1.5 turns out as a starting point, adjust for a
smooth idle and a reliable transition to high throttle
High Speed Needle: 1.5 turns out from closed, adjust needle to peak
RPM, if engine slows or dies at full throttle, the high-speed
mixture is likely too lean
Muffler Dimensions: 3.8 x 2.6 x 1.2" (97 x 66 x 31mm)
Muffler Exhaust Outlet Diameter: 0.79" (20mm)
Muffler Exhaust Outlet Length: 0.79" (20mm)
Distance Between Mounting Hole Centers Same Side: 2.6" (67mm)
Distance Between Mounting Hole Centers Opposite Side: 3.5" (90mm)
Height from bottom/Crankcase to top of Cylinder Head: 5.9" (150mm)
Width of Cylinder Head: 3.1" (80mm)
Distance Between Muffler Mounting Hole Centers: 1.7" (43mm)
Crankshaft Thread: 5mm/.8 pitch course thread


To avoid permanent damage to the electronic ignition system, NEVER
turn your DLE engine over with the system switched on and the plug
not installed.

Order DLEQ0551 if a Propeller Drill Guide is needed

7/11/12 pjw
jxs 09/24/12
ajg 11/24/14

See Tower Catalog page 172.
Easy RC: Engines
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