OS MAX FS A-72 II including silencer

Series FS-? (alpha) represents a new generation of OS four-stroke engines with a valve manifold. Compared to previous FS-Surpass engines, they are characterized by superior performance while maintaining the same build-in dimensions, making it easy to take advantage of the diverse range of construction kit designs and aircraft designs designed for OS engines over the past decades.

• The new lubrication system eliminates the need for crankcase ventilation to avoid the overflow hose that is common with earlier engine generations.
• The new 61N double-needle carburettor ensures a stable and regular run over the entire speed range and easy engine alignment. The suction port has a nozzle shaped like a Venturi tube reducing fuel leakage into the engine housing, positively affecting the flow of intake air and reducing the noise produced by suction.
• The new, larger volume silencer and rear exhaust tailpipe adjustment in the desired direction provide effective damping and give the engine a deep, soft sound.

FS? -72 is a four-stroke valve manifold engine designed for all kind of aircraft models, especially suitable for RC models. It is fitted with a 61NA double needle carburetor. The exhaust silencer F-5030 is also available in the basic assembly. The exhaust throat orientation can be changed by rotating the rear of the shock absorber by 360 °, the body of the shock absorber and the distance between the cylinder head and the silencer can be adjusted by means of a threaded transducer.

• The crankshaft has a screw thread for UNF 1 / 4-28 propeller nut, an OS lock nut set is provided in the basic engine assembly for reliable propeller attachment.
• Recommended dimensions of propellers: Sport and Acrobat: 13x6 ~ 8 ", 12x7 ~ 8" / Scale: 14x6 ~ 7 "
• Recommended fuel tank: 220-300 ml; The 220 ml tank is sufficient for 12 minutes, provided you are not still flying full throttle.
• Recommended fuel: at least 18% ricin or synthetic oil, 5-20% nitromethane" / li>
• Recommended candle: OS MAX type F.
• Same build dimensions as the classic FS-70 Surpass.

The engine kit includes: FS-72 engine with RC carburetor 61N, exhaust silencer F-5030, operating instructions.