The World Class 56 hp, 71 lbs, 4 Stroke Engine
Unicam Valve Train
The unicam valve-train features a a carburized single
camshaft that directly actuates two 31mm titanium intake valves.
The camshaft exhaust lobe actuates two 26mm steel exhaust valves via a forked, low-friction roller rocker-arm.
The World's 1: 1.26 power to weight ratio 56 hp,71lbs 4 Stroke Engine
Specifications
| Engine Type | 449 cc liquid-cooled 4-stroke, 4 valve SOHC single cylinder | |
| Bore and Stroke | 96.0mm x 62.0mm | |
| Compression Ratio |
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| Valve Train | UniCAM , 4 valve | |
| Carburetion | Keihin 40mm flat-slide | |
| Ignition | CD with electronic advance | |
| Max. Power Output | 41.5kW @ 9,000 rpm/ min, or 56.4 HP @ 9000 rpm | |
| Weight | 32.2kg, 71 lbs | |
| Power / weight ratio | 1 : 1.26 | |
| Max. Torque | 50.7Nm @ 6,500 RPM/ min | |
| Carburetion | 40mm Keihin FCR flat-slide carburetor with Throttle Position Sensor (TPS) | |
| Ignition System | Computer-controlled digital capacitor discharge with electronic advance & lighting coil | |
| Starter | Electric | |
| Turbo Charger | Option ! best to apply on high altitude fly high, or low noise, energy saving fly | |
| Emissions | Exhaust emissions comply with all States regulations in USA. lower than car emission. |
Advantage Over Air Cooling 2 Stroke Engines
| Engine Life | 5 times longer life than 2 stroke |
| Fuel Consumption | Save you 40 % fuel cost vs. to same horse power 2 stroke engine |
| Torque Output | 30 % more than same horse power 2 stroke engine |
| No Mixing Oil | No smoke stain to your aircraft |
| Emission | Lower than your car 4 stroke engine |
| Maintenance | Lowest maintenance required. |
Features
· Compact, lightweight engine assembly weighs only 32.2kg. ( 71 lbs )
· Unique UniCAM valve train provides both the light weight of a compact single-cam design and an optimum combustion chamber shape for maximum power at all engine rpm.
· Lightweight titanium intake valves permit use of smaller valve springs, reducing overall engine height.
· High-strength, low-carbon steel crankshaft with carburised main journals for maximum durability at sustained high-rpm operation.
· ACG cover, clutch cover and cylinder head cover are made of magnesium to reduce engine weight.
· Forged 12.5:1 compression slipper piston is lighter than conventional designs, for quick-revving response while maintaining excellent cylinder sealing and high-rpm power.
· Lightweight NiCaSil cylinder lining ensures cooler and quieter operation for extended engine life.
· Press-fitted aluminum spark plug pipe fits between forked exhaust rocker arms, further contributing to compact cylinder head design.
· Lightweight, compact, internal auto de-compressor system provides superb cold-starting and hot-starting operation.
· 40mm Keihin FCR-type carburetor features 4 rollers on the flat slide, resulting in very light throttle effort, smooth operation, crisp throttle response and excellent ride- ability.
· Carburettor features a throttle position sensor (TPS) that helps maintain linear throttle response throughout the rpm range.
· Twin-sump lubrication system separates oil supply to crankshaft, piston and valve train from supply to clutch and transmission. This ensures a steady supply of cool oil, reduces the amount of circulating oil and permits the use of a smaller oil pump.
· Vertically split crankcases feature a built-in oil pump, reducing weight compared to conventional designs.
· Dual radiators feature a refined core area for improved heat dissipation compared to conventional dual-radiator designs. Coolant recovery tank is located underneath engine for improved mass centralization. Coolant tank is protected by a plastic shield.
· Gear-driven balancer reduces vibration and drives the water pump.
