Stinger 70cc Twin Gas Engine with Electric Starter
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Stinger 70cc Twin Gas Engine with Electric Starter
The Stinger 70cc Twin is a horizontally opposed, two-stroke gasoline engine for large-scale RC airplanes. This version includes an electric starter and its electronic speed controller (ESC). The twin-cylinder layout, Walbro carburetor, and electronic CDI ignition make it an option for pilots planning a 70cc-class sport or scale aircraft.
Key features
- 70cc (4.27 cu in) horizontally opposed twin-cylinder engine
- Electric starter version with ESC included
- Manufacturer-stated maximum output of 7.9 hp at 8,600 rpm
- Walbro carburetor and Stinger electronic DC-CDI ignition with automatic advance
- Two included mufflers and angled CM6-type spark plugs
Manufacturer specifications
| Engine type | Horizontally opposed, two-cylinder, two-stroke gasoline engine |
|---|---|
| Displacement | 4.27 cu in (70cc) |
| Bore × stroke | 1.53 × 1.18 in (39 × 30 mm) |
| Maximum stated output | 7.9 hp at 8,600 rpm |
| Stated speed range | 1,500–8,600 rpm |
| Carburetor | Walbro |
| Ignition | Stinger DC-CDI with automatic advance |
| Ignition supply | 7.4–14V according to Stinger; verify the rating printed on the supplied module before connecting a battery |
| Spark plugs | CM6 type |
| Fuel | Gasoline premixed with quality two-stroke oil; follow the supplied manual for oil ratio and break-in instructions |
| Cooling | Air cooled |
| Engine weight | 3.32 lb (1,508 g), manufacturer stated |
| Two mufflers | 5.36 oz (152 g) combined, manufacturer stated |
| Ignition module | 5.1 oz (145 g), manufacturer stated |
| Stated subtotal | 3.98 lb (1,805 g) for the components above; installed electric starter weight is not separately specified |
Propeller guidance
Stinger lists 22×10, 23×8, 23×10, 24×8, and 24×9 propellers. Its product page lists a 23×10 propeller for break-in. Confirm propeller clearance, aircraft suitability, and engine performance during setup.
Included equipment
- Stinger 70cc twin engine with electric starter
- Starter ESC
- Electronic CDI ignition module
- Two mufflers and spark plugs
- Gaskets, bolts, throttle arm extension, and manual
Also required: Suitable batteries for the ignition and starter system, gasoline, two-stroke oil, and a suitable propeller. Follow the supplied instructions for wiring and starting.
Replacement parts
- Shop Stinger 70cc twin parts — choose from the parts offered on the product page, including gaskets, reed valve assembly, prop hub accessories, and twin muffler.
- Shop Stinger spark plugs — select the SCM-6 Iridium option, which Gator RC lists as fitting the 70cc Twin.
