OS Engines FS120S III Four Stroke Aircraft Engine, 1.20 Size, with E5040 Silence

OS Engines FS120S III Four Stroke Aircraft Engine, 1.20 Size, with E5040 Silencer

The FS-120S? is the latest mid-range model in the well-established FS-120S series of 20cc four-stroke engines. This series extends from the standard suction-feed FS-120S-E to the unique ultra-high performance FS-120S-SP, the world's only production model engine to be equipped with a genuine crankshaft-driven supercharger.

Features

• E5040 Silencer included
• 4-stroke engine with pump
• Front and rear bearings sealed and greased internally to prevent corrosion.
• Cubic capacity of 19.70 cc.
• Recommended use of type F spark plugs.
• With extension cord for needle adjustment included.
• With the new lubrication system, it is not necessary the oil discharge tube of the carter

Product Information

The FS-120S ? is fitted with the new O.S. PD-07 diaphragm type fuel pump and matching Type 70N carburettor incorporating a built-in pressure regulator. These features ensure that fuel/air mixture strength is maintained at a constant level through maneuvers, for consistent performance and reliable throttle response. In the interests of improved durability, certain ferrous parts that are particularly susceptible to corrosion in four-stroke engines, have a corrosion-resistant plating and, for the same reason, a special grease-packed twin-sealed rear ball-bearing is used. To maintain the four-stroke engine's reduced noise levels, the FS-120 ? is supplied with an O.S. E5040 silencer (muffler) of substantially enlarged volume, as standard equipment. 

Specs

Displacement 19.70 cc

Piston diameter 30.40 mm

Stroke 27.50 mm

RPM range 2,000 - 12,000

Power 2.1 hp at 12,000 RPM

Complete weight with exhaust 920 g

Recommended propellers 14x9, 14x10 , 14x11, 15x8, 15x9, 15x10, 16x6