3W-112i B4 Four-Cylinder Gasoline Engine

3W-112i B4 Four-Cylinder Gasoline Engine

The 3W-112i B4 is a premium 114cc four-cylinder gasoline engine designed for large-scale RC aircraft, scale models, sport aircraft, aerobatic aircraft and professional aeromodelling projects. Built for smooth running and reduced vibration, the 3W-112i B4 uses a multi-cylinder layout and microprocessor-controlled ignition to deliver refined power, dependable running characteristics and long-term protection for the model and onboard electronics.

KEY FEATURES & BENEFITS:

• Smooth Four-Cylinder Gasoline Platform:
• • 114.0cc gasoline engine displacement
• • Four-cylinder engine architecture for smooth running
• • 12.2HP / 8.97kW output reference
• • 1,000–7,000 RPM operating range
• • Reduced vibration helps protect model structure and electronics
• • Lower noise profile compared with harsher-running engine layouts

• Professional RC Aircraft Engine:
• • 36mm bore and 28mm stroke specification
• • 3.870kg weight including ignition
• • 6.0–8.4V DC ignition support
• • 1:50–1:80 oil/gasoline ratio with minimum 92-octane fuel reference
• • Microprocessor-controlled ignition with programmed ignition curve
• • Available in tractor and pusher configurations for different airframe requirements

• Aeromodelling Integration:
• • Suitable for a broad variety of large model aircraft
• • Designed for reliability, durability and power
• • Ideal for professional workshops, advanced RC pilots, RC flying clubs and aircraft builders
• • Installation, fuel setup, cooling and propeller matching should be handled by experienced operators

APPLICATIONS: Large-scale RC airplane builds, giant-scale model aircraft, scale aircraft builds, sport RC aircraft, aerobatic aircraft, tractor-engine RC aircraft setups, pusher-engine RC aircraft setups, petrol-powered model aviation, RC aircraft engine replacement, professional aeromodelling workshops, engineering college aircraft labs, fixed-wing UAV prototype power-system testing, RC flying club maintenance, high-performance model-aircraft power-system integration.

FREQUENTLY ASKED QUESTIONS:

Q: What is the 3W-112i B4? A: The 3W-112i B4 is a 114cc four-cylinder gasoline RC aircraft engine designed for large-scale model aircraft, scale aircraft, sport aircraft, aerobatic aircraft and professional aeromodelling applications.

Q: What is the price of the 3W-112i B4? A: The listed import price is 6,45,000 ₹ for the 3W-112i B4 Standard Tractor Package. Final pricing may vary if pusher configuration, installation support, propeller matching, workshop support or UAV prototype integration assistance is added.

• Q: What is the displacement of the 3W-112i B4?
• A: The official displacement is 114.0cc.

• Q: What power output does it produce?
• A: The engine is officially listed with 12.2HP / 8.97kW output.

• Q: What is the RPM range?
• A: The official RPM range is 1,000–7,000 RPM.

• Q: What is the bore and stroke?
• A: The listed bore diameter is 36.00mm and the listed stroke is 28.00mm.

• Q: What is the engine weight?
• A: The official weight including ignition is 3.870kg.

• Q: What fuel/oil mix does it use?
• A: The official oil/gasoline ratio is 1:50–1:80 with minimum 92-octane fuel reference.

• Q: What ignition voltage does it require?
• A: The official ignition voltage range is 6.0–8.4V DC.

Q: What ignition system does it use? A: The 3W-112i B4 uses microprocessor-controlled ignition with a programmed ignition curve matched to the engine for good running behavior across the RPM range.

• Q: Is it available in tractor and pusher versions?
• A: Yes, official references list tractor and pusher SKU options. The required configuration should be confirmed before ordering.

Q: What makes this engine smooth-running? A: The four-cylinder layout and smooth-running crankshaft architecture help reduce vibration, protect the model and electronics, and reduce harsh operating noise.

Q: What aircraft is the 3W-112i B4 suitable for? A: It is suitable for large-scale RC aircraft, scale models, sport aircraft and aerobatic aircraft that are designed for a 114cc-class four-cylinder gasoline engine.

Q: Is this engine suitable for beginners? A: It is best suited for experienced RC pilots or beginners working under expert supervision. Four-cylinder gasoline engines require careful installation, fuel handling, ignition setup, tuning and propeller safety.

Q: Can it be used in UAV prototype projects? A: Yes, it may be used in petrol-powered fixed-wing UAV prototype projects if the airframe, vibration isolation, fuel system, cooling, propeller, ignition and safety procedures are professionally engineered.

Q: What propeller should be used? A: Propeller selection should be matched to the airframe, engine version, RPM target, altitude and flight style. Use manufacturer guidance or professional propeller matching support before operation.

• Q: Is a propeller included?
• A: A propeller should be treated as required separately unless specifically included in the final quotation. Confirm final package contents before order.

Q: What else is required for installation? A: Typical required items include suitable propeller, fuel tank, fuel tubing, fuel filter, ignition battery, switch harness, throttle linkage, engine mount, cooling layout, starter equipment, field tools and correct gasoline/oil mix.

Q: What maintenance is required? A: Maintenance should include checking propeller bolts, engine mounting bolts, exhaust hardware, spark plugs, ignition wiring, fuel lines, fuel filter, throttle linkage, carburetor tuning and general engine cleanliness.

Q: What safety precautions are important? A: Operators should follow propeller safety, fuel safety, fire safety, controlled starting procedure, secure mounting, safe tuning practice and field operation rules. Never stand in front of or in line with the propeller while the engine is running.

Q: Why choose a four-cylinder RC gasoline engine? A: A four-cylinder RC gasoline engine can offer smoother operation, reduced vibration, improved running refinement and better protection for sensitive electronics in demanding large aircraft builds.

Q: What warranty is included? A: Warranty support generally covers manufacturing defects under approved use and normal operating conditions. Damage from incorrect fuel mix, poor tuning, overheating, propeller strike, crash impact, vibration damage, dirt ingestion, water exposure or unauthorized modification may not be covered.