RCGF 20cc RE Rear Exhaust Gasoline Engine | 2.5HP Compact Motor for 60-90 Scale Warbirds & Sport Planes
Hero Section: The Scale Builder’s Dream – Clean & Powerful
For scale modelers and sport flyers, cutting a giant hole in the side of a cowl for a muffler is heartbreaking. The RCGF 20cc RE (Rear Exhaust) solves this problem. Designed with a rear-exiting exhaust port, this engine allows for a streamlined installation that preserves the sleek lines of your P-51 Mustang, Spitfire, or sleek sport plane. It packs the punch of a 2.5HP gasoline engine into the compact footprint of a .60-.90 glow engine. Say goodbye to expensive nitro fuel and messy residue, and hello to clean, scale looks and high-performance gasoline power.
Why Choose The RCGF 20cc RE?
- Rear Exhaust Design (The RE Advantage)
This is the ultimate solution for narrow cowls. By routing the exhaust to the rear, the RCGF 20cc RE fits inside tight engine compartments where side-exhaust engines simply can't. It allows for a "hidden" muffler setup, maintaining the scale realism of your aircraft.
- The Perfect Glow-to-Gas Conversion
Tired of paying $30 a gallon for nitro fuel? This engine is the perfect drop-in replacement for .60 to .90 size glow engines. It uses the same beam-mount configuration, making the swap easy. You get longer flight times, cheaper fuel (gasoline), and virtually no oil cleanup on your wings.
- Small Size, Big Power
Weighing only 643g, this featherweight engine spins up to 9000 RPM, delivering 2.5HP. It provides an incredible power-to-weight ratio, giving your plane unlimited vertical performance and high top speeds.
Technical Highlights: Precision Engineering
- Walbro Carburetor Reliability: No more fiddling with needle valves every flight. The genuine Walbro carburetor ensures easy starting, a steady idle at 1800 RPM, and consistent fuel delivery during high-G maneuvers.
- DC-CDI Ignition: The compact electronic ignition module features automatic timing advance, optimizing performance across the entire RPM range (Supports 6V-8.4V).
- Beam Mount Simplicity: The integrated beam mount lugs allow you to mount this engine directly to your firewall rails, just like a standard glow engine, saving weight and complexity.
Specifications
- Product Name: RCGF 20cc RE (Rear Exhaust) Gasoline Engine
- Displacement: 20cc (1.22 cu in)
- Max Power: 2.5HP @ 9000 RPM
- Bore x Stroke: 32mm x 24mm
- Static Thrust: 6.9kg (15.2 lb) @ 100m altitude
- Carburetor: Walbro (Diaphragm Pump)
- Spark Plug: NGK-CM6
- Ignition: DC-CDI (6V - 8.4V)
- Fuel Mix: 30:1 (Gasoline : 2-Stroke Oil)
- Recommended Props: 16x6, 16x8, 17x6
- Engine Weight: 643g (Host)
Usage Scenario: The Clean Warbird
You are building a 65-inch wingspan P-51D. You slide the RCGF 20cc RE into the nose. Because the exhaust exits the rear, you don't have to hack up the side of the beautifully painted cowl. You install a canister muffler in the fuselage tunnel. On the runway, the engine starts with a realistic purr. You take off, and the plane looks like the real thing—no ugly muffler sticking out. The 9000 RPM power pulls the fighter through huge loops and fast strafing runs. This is scale flying perfection.
Important Tips & Expert Advice
- Cooling is Critical: With a rear exhaust engine, the cylinder head is often deep inside the cowl. Ensure you have proper baffling to force air over the cylinder fins. The air exit hole must be 3 times larger than the intake to suck the hot air out.
- Propeller Selection:
- Sport/Warbird: Use a 16x8. This is the best all-around prop for speed and thrust.
- 3D/Fun Fly: Use a 17x6 for instant throttle response and pull-out power.
- Break-In: Run the first gallon of fuel at a rich 30:1 ratio with a 16x6 prop. This allows the engine to rev freely without overheating while the ring seats.
Customer Support
We specialize in scale solutions. If you need help measuring your cowl for this rear exhaust engine, contact us: service@helloworld7.com
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