91FX O.S. Engine  [OSMG0591]

Made for sport, but engineered for quality, the 91FX supplies the power and user-friendly top top features of other FX Series devices in a displacement complement large-scale aircraft. The 91FX neatly bridges the energy space between .60-size radiance devices and gas engines, by providing the simple familiarity of radiance technology combined with the added power that today's large-scale modelers need. Having its top output of 2.8 hp, the 91FX can place a large-scale plane through its paces easily. Enough reason for O.S.' careful evaluation and design behind it, large-scale pilots can fly the greatest in long-lasting dependability.

Coarse threads and an O-ring seal concerning the needle valve minimize settings creep in the end as a result of vibration and environment leakages, supplying more flights with fewer modifications.

Extra-long crankshaft and locknut construction offer more thread length for better prop nut engagement and much more safety for pilots and onlookers.

A lowered crankcase profile renders area to get more head height and air-con fins-semi-squared head design further improves ac capability and gratification.

Dual bearing design includes an even more significant front bearing for additional durability and smoothness.

The most effective energy plant for all Top FliteR Gold Edition Kits

REQUIREMENTS

• Stock amount: OSMG0591
• Displacement: 0.912 cu in (15.0 cc)
• Bore: 1.091 in (27.7 mm)
• Stroke: 0.976 in (24.8 mm)
• Practical rpm: 2,000-16,000
• Output: 2.8 hp @ 15,000 rpm
• Weight: 19.3 oz (550 g)
• Includes: Muffler, protection Propeller Locknut Assembly, #8 radiance plug
• Needs: gas, mount & prop
• Suggested Props: 13x8, 13x9