#34720 O.S. Engine – OS FS-72

O.S. 72FS-a 4-Stroke Aircraft Engine, Brand New in Box. OS Factory Code Number
34720

This is the glow powered 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, also provides torque for turning larger diameter props
  for more realistic scale filght
• Broad power band suitable for Scale as well as Sport models
• Same mounting bolt pattern as the FL-70 and FS-70 Ultimate
• New 61N carburetor with extended intake tube eliminates reverse flow tendency
  of air/fuel mixture, carb is reversible 180X
• Blow-by internal oil system eliminates the need for a crankcase breather
  fitting
• Adjustable exhaust outlet direction and exhaust port to muffler distance
• Same muffler as the O.S. 81FS-a offers a pleasant exhaust sound with a lower
  sound level

Includes:

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

Specs:

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