O.S. FS-120S-E 1.20 Four Stroke Glow Engine

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This is the OS Engines FS-120S-E Surpass Series four stroke ring engine.  O.S. developed the Surpass Series of 4-stroke engines for discerning fliers who demand more power. Able to swing larger props and supply more usable horsepower, Surpass 4-strokes provide the best performance for your plane, regardless of scale or flying style.

  • All Surpass engines feature a helix gear-driven camshaft on the front end and dependable updraft carburetor in the back.
  • All include glow plug and standard silencer.

  • Displacement (cu. in): 1.218
  • Bore (in): 1.197    
  • Stroke (in): 1.085
  • RPM range: 2,000-11,000
  • Output (hp @ RPM): 1.90 @ 11,000
  • Weight (oz): 30.5
  • Recommended Props: 13x11, 13x12, 14x10, 14x11, 15x8, 16x6, 16x7, 17x6

This product was added to our catalog on February 11, 2009.

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