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FSa-72II Airplane Engine with F-5030 Silencer

Item No.
OS Engines - OSMG0878
$637.99
In Stock
Brand Logo
3.6 out of 5 Customer Rating

FSa-72II Airplane Engine with F-5030 Silencer

Item No.
OS Engines - OSMG0878
$637.99
  • Blow-by oil exits through the breather nipple on back plate for more stable operation
  • Black rocker covers
  • 61N aluminum body carburetor with rotary throttle lever, high speed needle valve, and low speed mixture control, extended intake tube eliminates reverse flow tendency of air/fuel mixture, carb is reversible 180°
  • Adjustable F-5030 muffler for quiet operation can be rotated 360° for tight fitting applications
Product $637.99
Add Ons
Estimated Total: $637.99

FSa-72II Airplane Engine with F-5030 Silencer

Item No.
OS Engines - OSMG0878
3.6 out of 5 Customer Rating
Product $637.99
Add Ons
Estimated Total: $637.99
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Product Details

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In The Box
  • (1) FSA-72II Engine
  • (1) F-5030 Silencer
  • (1) Type F Glow Plug
  • (1) Product manual
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Needed to Complete
  • Fuel: 10%-20% nitromethane with 18% lubricant. Synthetic, castor, or a synthetic/castor lubricant blend may be used.
  • NOTE: Certain four-cycle fuels cannot be used due to low oil content However, SOME four-cycle fuels such as the Wildcat 4-Cycle 15% may be used due to its 18% oil content.
  • When choosing fuels for this engine, be sure to select a fuel with at least an 18% lubricant content.
  • Propeller: Sport & Aerobatic 12x7-8, 13x6-8 Scale 14x6-7

The Tradition Continues...

O.S. leads the way in advanced 4-stroke engine technology, and you’ll see for yourself when you mount the FSa-72II in your model! Sport flyers will enjoy greater performance, while scale pilots will experience more realistic flight. Plus, everyone will benefit from the FSa-72II’s deep, rich sound.
  • The adjustable F-5030 muffler can be rotated 360° and moved in or out for a perfect fit. Rich, deep sound is an added benefit.
  • Features the same mounting bolt pattern as the FL-70 and the FS-70 Ultimate for easy replacement.
  • A reversible carb and narrower camshaft housing simplify installation.
  • Tighter tolerances and updated engineering reduce maintenance and ease set-up.
  • Delivers more performance power to sport pilots and more realistic flight to scale pilots.

Product Specifications

Manufacturer # 34721
Product Height 4.2 in (108 mm) bottom of crankcase to top of rocker cover
Prop Range 12x7-8 - 14 x 6-7
RPM Range 2,400 - 12,000 rpm
Displacement 0.719 cu in (11.79cc)
Product Length 4.1" (103.6mm) from carb to drive hub
Muffler Type 2-piece aluminum
Cylinders Single
Product Width 1.8" (45mm) at mounting tabs
Total Weight 1.2 lbs (530g)
Crankshaft Threads UNF1/4-28
Muffler Weight 1.9 oz (54g)
Engine (Only) Weight 16.79 oz (476 g)
Bore 1.063" (27mm)
Crankshaft Type Threaded
Power Type Glow
Plug Type O.S. type F
Stroke 0.811 in (20.6 mm)