RCGF 40cc Twin Cylinder 2 Stroke Gasoline Engine for Large Scale RC Airplane 8500RPM
Hero Section: The Sound of Stability and Power
There is nothing quite like the sound of a twin-cylinder engine purring on the tarmac. The RCGF 40cc Twin isn't just about raw power; it represents a major upgrade in flight quality. By utilizing a horizontally opposed "boxer" configuration, this engine naturally cancels out vibration, protecting your airframe and electronics while delivering a silky-smooth throttle response. Whether you are building a scale Warbird or a 3D aerobatic monster, this engine provides the 4.8HP punch you need with the reliability you demand.
Why Choose The RCGF 40cc Twin?
- Vibration Cancellation (The Boxer Advantage)
Single-cylinder engines can shake an airframe apart. The RCGF 40cc features horizontally opposed cylinders that fire simultaneously, effectively neutralizing vibration. This results in a smoother flight, less fatigue on your servo gears, and a longer lifespan for your model.
- Premium Components for Reliability
An engine is only as good as its fuel system. This model comes standard with a genuine Walbro Carburetor and an NGK-CM6 Spark Plug. These industry-standard components ensure easy starting, consistent idling at 1500rpm, and reliable transition to full throttle without hesitations.
- Impressive Power-to-Weight Ratio
Weighing in at just over 1kg (host weight), this engine delivers a massive 15kg (20.9 lbs) of static thrust. It packs the power of a larger engine into a compact 40cc frame, making it an ideal choice for 30cc-50cc size airframes where weight savings are critical.
Technical Highlights: Precision Engineering
- DC-CDI Ignition: The included DC-CDI ignition system features computer-controlled automatic advance angles, optimizing performance across the entire 1500-8500 RPM range. It supports a wide voltage input (6-14V), compatible with modern LiPo receiver packs.
- Piston Valve Design: The 2-stroke piston valve design ensures a simple, robust internal structure with fewer moving parts, translating to easier maintenance and higher durability.
Specifications
- Product Name: RCGF 40cc Twin 2-Stroke Gasoline Engine
- Type: Twin Cylinder, Air Cooled, Piston Valve
- Displacement: 40cc (2.44 cu in)
- Bore x Stroke: 32mm x 25mm
- Max Output: 4.8HP @ 8500 RPM
- Idle Speed: 1500 RPM
- Static Thrust: 15kg (20.9 lb) @ 100m altitude
- Carburetor: Walbro (Diaphragm Butterfly Valve)
- Spark Plug: NGK-CM6
- Ignition Voltage: 6V - 14V DC
- Fuel Mix: Gasoline : 2-Cycle Oil (30:1 Recommended)
- Recommended Props: 19x8, 19x10, 20x8, 20x10
- Main Engine Weight: 1075g (2.37 lb)
Usage Scenario: The Maiden Flight
You taxi out to the runway. Unlike the harsh rattle of a single-cylinder, your plane hums with a deep, steady drone. You advance the throttle. The Walbro carb feeds the twin cylinders instantly. The plane tracks straight, free from excessive vibration torque. As you pull into a vertical climb, the 4.8HP engine pulls relentlessly, giving you the confidence to perform precise maneuvers or scale-perfect flybys.
Important Tips & Expert Advice
- The Break-In Ritual: Do not skip the break-in process. We recommend running the engine with a high-quality 2-stroke oil at a ratio of 30:1. Use a slightly smaller propeller (e.g., 19x8) for the first few tanks to keep the load light while the rings seat.
- Cooling is Key: Since this is an air-cooled engine, ensure your cowling has adequate airflow. The rule of thumb is the air exit area should be 3 times larger than the air intake area to prevent overheating.
- Propeller Safety: Always double-check prop bolts before every flight. The torque of a 40cc engine is significant.
Customer Support
We support pilots who demand the best. If you need help with carburetor tuning, prop selection, or warranty questions, our team is ready to help: service@helloworld7.com
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