Introduction, Engine specifications, Needed to complete – Evolution Engines E7260 User Manual
Page 4: Installing the engine in the airframe
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Introduction
Thank you for purchasing an Evolution
®
radial engine, one of the finest engines in the market-
place today. Evolution is committed to you having a positive experience and a lifetime of great
operation with your new engine.
It is important that you read the engine manual before starting the engine for the first time.
Evolution radial engines have different requirements than engines that you may have operated
in the past. The manual provides important information for installing the engine, selecting the
correct propeller, fuel requirements and proper engine break-in procedures.
Engine Specifications
Engine
EVOE
7160
EVOE
7260
type
spark ignition
spark ignition
cylinders
7
7
capacity
9.8 cu. in (160.0cc)
15.9 cu. in (260.0cc)
capacity per cylinder
1.40 cu. in (22.9cc)
2.26 cu. in (37.1cc)
bore
1.19 in (30.2mm)
1.41 in (35.7mm)
stroke
1.26 in (32.0mm)
1.47 in (37.0mm)
power
10.6 hp
15.6 hp
RPM range
1000–6000
1000–5500
maximum RPM
6300
6000
engine diameter
11.0 in (28 cm)
12.6 in (32 cm)
engine length
10.2 in (26 cm)
10.6 in (27 cm)
weight
10.6 lb (4.8 kg)
14.8 lb (6.7 kg)
fuel usage (approx.)
1.1 oz (30 ml) per minute
1.75 oz (50 ml) per minute
propellers
2-Blade: 27 x 10–28 x 12
3-Blade: 26 x 12
2-Blade: 32 x 12, 32 x 14, 34 x 16
3-Blade: 30 x 12, 30 x 16, 30 x 18
Needed to Complete
• 2-stroke oil
• Engine baffles
• Propeller
• Electronic ignition battery (2S 7.4V Li-Po or 6V Ni-MH)
• Fuel line (3.5mm ID)
• Electronic ignition switch
• Engine mounting screws
Installing the Engine in the Airframe
Properly installing the engine to either the airframe or an engine test stand for break-in is crucial
to getting the most power and longest life from your engine.
WARNING: Always attach the engine mounting ring to a flat plate surface, such as
6–8mm plywood or carbon fiber plate.
WARNING: Never use a standoff between the firewall and the mounting ring. Vibration
between the standoff and the mounting ring will damage the mounting ring and cause
the engine to separate from the airframe.