Q1: What size RC airplanes is the RCGF Stinger 70cc Twin best suited for?
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Giant Scale Sweet Spot: This engine is the perfect upgrade for the popular 50cc to 70cc class of giant scale RC airplanes. It provides incredible vertical pull for 3D aerobatic planes with wingspans ranging from 88 to 93 inches, and offers highly realistic scale power for large heavy warbirds.
Q2: Why choose a Twin-Cylinder (Boxer) engine over a single cylinder?
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Ultra-Smooth Operation: The horizontally opposed twin-cylinder design naturally cancels out reciprocating mass. This results in drastically lower vibration compared to a single-cylinder engine of the same displacement, which protects your airframe joints, hinges, and expensive servos from premature wear.
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Cowl Fitment & Sound: The boxer design often fits entirely inside the wide cowlings of scale aircraft without needing to cut massive holes for a tall cylinder head. Plus, the dual exhausts produce a deep, throaty, and realistic twin-cylinder sound.
Q3: What fuel mixture and oil ratio does the Stinger 70cc require?
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Gas & Oil Mix: As a high-performance 2-stroke engine, it runs on standard unleaded gasoline mixed with a high-quality fully synthetic 2-stroke RC engine oil. The typical break-in ratio is usually 30:1, transitioning to a leaner mix (like 40:1 or 50:1) for normal flying to ensure optimal lubrication and peak RPM.
Q4: What is included in the box for installation?
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Ready to Mount: The RCGF Stinger series comes with everything you need to get it on the firewall. The package includes the engine, dual mufflers (exhausts), high-voltage CDI electronic ignition, spark plugs, and customized aluminum standoffs. The electronic ignition automatically advances the timing, making hand-starting safe and easy.
👉 Upgrade your giant scale power! Click here to check the price and order the RCGF 70cc Twin Engine.
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