New Engine, More Power 
Smooth operator Give your sport aircraft the low-vibration smoothness and unique sound of a horizontally opposed twin! The gasoline engine is designed for large scale aircraft. It combines with excellent quality and reasonable price.
 
NEW ENGINE,NEW DESIGN ,MORE POWER！
Angled plug with CM6 SPARK PLUG.
the gasoline engine is designed for large scale aircraft.
It combines with excellent quality and reasonable price.
 
Type
2 cycle piston valve type gasoline engine for airplane
Displacement (cc)
70cc(4.27 cu.in)
Bore x Stroke (mm)
1.53 in(39mm) x 1.18 in (30mm)
Recommended props
22×10, 23×8, 23×10,24X8,24X9
Maximum Output
7.4HP/8600rpm
Power supply
7.4V-14V
 
 
Carburetor : Walbro
Ignition : Stinger DC-CDI (Computer Controlled auto advance, electronic ignition system)
SPARK PLUG: NGK CM6 Type
Requires: Gasoline, 2-cycle oil, ignition battery & propeller
speed rang : 1500-8600rpm
Gasoline-Version : Pre-mixed Fuel, 25-40 (Gasoline):1 (recommended : 30:1) 
Lubrication Oil : High quality fully synthetic 2 cylinder oil such as Motul 800 2T 100% synthetic racing motro oil , Red line two-stroke racing motor oil , Stihl Ultra high performance 2 cycle fully synthetic engine oil etc . 
Break in Propeller : 23X10 (Standard Two leafs prop)
Cooling System : Air Cooled
RCGF Stinger Engine package Includes: electronic CDI ignition, muffler, spark plug, gaskets, bolts, throttle arm extension & manual.
Weight:

Engine: 3.32 lb (1508g)
2XMuffler: 5.36 oz (152 g)
Ignition Module: 5.1 oz (145 g)
Total: Weight: 3.98 lb (1805 g)
Technical Data:

Ignition Battery: 7.4V-14VNiCd or NiMH, 7.4V LiFe or 2S LiPo pack
Gasoline/Oil Mix: 30:1
Replacement Spark Plug: NGK CM6 or equivalent
Idle Speed: 1600 rpm/min