O.S. Engine #34720 - OS FS-72  [OS-34720]

This is the radiance driven O.S. 72FS-a 4-Stroke Aircraft Engine.

Features:

• Ideal powerplant for 56 size aircraft-provides extra power for hovering and 3-D type manuevers, additionally provides torque for turning bigger diameter props for more realistic scale filght
• Broad power band ideal for Scale in addition to Sport models
• Same mounting bolt pattern because the FL-70 and FS-70 Ultimate
• New 61N carburetor with extended intake pipe eliminates reverse movement tendency of air/fuel mixture, carb is reversible 180X
• Blow-by internal oil system eliminates the necessity for a crankcase breather suitable
• Adjustable exhaust socket way and exhaust port to muffler distance
• Same muffler as the O.S. 81FS-a offers a pleasant exhaust noise with less noise level

Includes:

O.S. 72FS-a 4-Stroke Aircraft Engine with muffler, header, kind F radiance plug manual

Specs:

• Displacement: 0.72 cu in (11.79cc)
• Bore: 1.063" (27.0mm)
• Stroke: 0.822" (20.6mm)
• Body weight: Engine, 16.79oz (476g)
• Silencer & Manifold,1.90oz (54g)
• Power production: 1.2 ps/11,000 RPM
• Practical RPM: 2,400-12,500