Stinger 70cc Twin Gas Engine
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RCGF Stinger 70cc Twin Gas Engine
The RCGF Stinger 70cc Twin is a horizontally opposed, twin-cylinder gasoline engine for compatible large-scale RC airplanes. Its layout provides smooth operation and the distinctive sound of a twin for sport, scale, and aerobatic aircraft.
A Walbro carburetor and electronic ignition with automatic timing advance provide adjustable fuel delivery and ignition control. Plan your installation around the engine's mounting dimensions, cylinder width, and muffler clearance.
🚀 Target Applications:
- Large-scale RC sport, scale, and aerobatic aircraft designed for a compatible 70cc gasoline engine
- Installations with sufficient clearance and cooling airflow for both cylinders and mufflers
Key Features
- Horizontally Opposed Cylinders: Twin-cylinder layout for compatible large-scale aircraft.
- Walbro Carburetor: Adjustable fuel delivery for setup and tuning.
- Electronic Ignition: Stinger DC-CDI system with automatic timing advance.
- Angled Spark Plugs: NGK CM6-type plugs.
- Air Cooling: Finned cylinders require adequate airflow inside the cowling.
📋 RCGF Stinger 70cc Twin Technical Specifications
| Engine Type | Horizontally opposed twin-cylinder, two-stroke gasoline airplane engine |
|---|---|
| Total Displacement | 4.27 cu in (70cc) |
| Bore × Stroke | 1.54 × 1.18 in (39 × 30 mm) |
| Rated Maximum Output | 7.9 hp at 8,600 RPM |
| Operating Speed Range | 1,500–8,600 RPM |
| Listed Idle Speed | 1,500 RPM |
| Carburetor | Walbro |
| Ignition | Stinger DC-CDI electronic ignition with automatic timing advance |
| Ignition Supply Voltage | 7–14V; confirm supplied module rating |
| Ignition Power Restriction | Do not use a BEC, iBEC, or uBEC |
| Spark Plug | NGK CM6 or equivalent |
| Fuel Mixture | 40:1 gasoline to high-quality fully synthetic two-stroke oil |
| Cooling | Air cooled |
| Recommended Propellers | 22 × 10, 23 × 8, 23 × 10, 24 × 8, or 24 × 9 in |
| Suggested Break-In Propeller | 23 × 10 in, two-blade |
| Engine Weight | 3.32 lb (1,508 g) |
| Combined Muffler Weight | 5.36 oz (152 g), both mufflers |
| Ignition Module Weight | 5.1 oz (145 g) |
| Combined Listed Weight | 3.98 lb (1,805 g), engine, mufflers, and ignition |
| Gator RC SKU | STNG-70-TWIN |
📦 What's Included:
- RCGF Stinger 70cc Twin engine
- Electronic CDI ignition module
- Two mufflers
- Spark plugs
- Gaskets and bolts
- Throttle arm extension
- Instruction manual
Note: Gasoline, fully synthetic two-stroke oil, a compatible ignition battery, an appropriate propeller, and gasoline-compatible fuel system components are required separately. Additional mounting components may be needed for your aircraft installation.
🛠 Aircraft Compatibility & Setup
Select an aircraft whose manufacturer recommends a compatible 70cc gasoline engine. Confirm engine width, mounting dimensions, cowl clearance, muffler clearance, propeller clearance, and aircraft balance before installation. Displacement alone does not establish compatibility.
Follow the supplied RCGF manual for installation, break-in, and engine adjustment. Verify replacement spark-plug and ignition-module compatibility with your engine before ordering.
Replacement parts: Browse our RCGF Stinger 70cc Engine Parts and confirm compatibility with your twin-cylinder engine.
The Gator RC Advantage: Shop RCGF Stinger engines, replacement parts, propellers, and installation accessories from Gator RC in Algonquin, Illinois. Contact us for help selecting components for your aircraft.
- Manual Download
