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FS-72A Ringed 4-Stroke Glow Single

FS-72A Ringed 4-Stroke Glow Single

In Stock - Allow 2-3 Days for Processing

Item:   OS MG0877
Price: $349.99 
Item Qualifies for Free Ground Freight (48 States) on Orders Over $250
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FS-72A Ringed 4-Stroke Glow Single with Muffler, by OS Engines

This is the glow powered O.S. FS72-a 4-Stroke Aircraft Engine. Ideal powerplant for 56 size aircraft-provides extra power for hovering and 3-D type maneuvers, also provides torque for turning larger diameter props for more realistic scale flight.
  • 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 180°
  • 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
  • Two year limited warranty
INCLUDES: O.S. FS72-a 4-Stroke Aircraft Engine with muffler, header, type F glow plug and manual

REQUIRES: 10%-20% nitromethane with 18% lubricant, Propeller: Sport and aerobatic scale 12x7, 13x6-8, 14x6-7)
  • Displacement: 0.72 cu in (11.79cc)
  • Bore: 1.063" (27.0mm)
  • Stroke: 0.822" (20.6mm)
  • Weight: Engine, 16.79oz (476g); with Silencer & Manifold, 18.7oz (530g)
  • Power output: 1.2 PS, 1.18 HP/11,000 RPM
  • Practical RPM: 2,400-12,500
  • Crankshaft Thread Size: 1/4 x 28
  • Height from Bottom of Mounting Tab to Top of Crankcase: 3.5" (90mm)
  • Width of Crankcase below Mounting Tabs: 1.4" (36mm)
  • Center of Mounting Holes Same Side: .79" (20mm)
  • Center of Mounting Holes Opposite Side: 1.8" (45mm)
  • Center of Front Mounting Hole to Drive Washer: 1.9" (49.5mm)
  • Center of Rear Mounting Hole to Drive Washer: 2.7" (69.5mm)
  • Center of Crankcase to Center of Needle Assembly: 0.83" (21.3mm)
  • Center of Crankcase to Outer Edge of Needle Assembly: 1.3" (33.7mm)
  • Muffler Angle in Relation to Engine: 11°
  • Needle Settings: High Speed: 2.5 - 3 turns out from fully closed
  • Mixture Control (low speed): 2 turns out from fully closed
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