Top Flite TOPA0110 - Manual (Page 58)

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O.S. ® .61 FX
Easy to start and maintain, the .61 FX offers 1.9 hp of hard-charging sport
power for sizzling aerobatics. Fins on the semi-squared head and 1-piece
crankcase carry away performance-killing heat. Dual bearings, a balanced
crankshaft and O.S.’s exclusive ABL (Advanced Bimetallic Liner) smooth
away friction and vibration, reducing heat, wear and wasted power. The
high-speed needle on the 60C carb is remote mounted for pilot safety, and
equipped with an O-ring seal and ratchet spring to hold settings tight against
creep. A versatile mounting bracket provides horizontal and vertical
mounting options for installation ease. OSMG0561
ALSO AVAILABLE FROM TOP FLITE
O.S. FS-91 Surpass™ II
The first impression most modelers have of the ringed FS-91 II is raw power.
But the most lasting impression it leaves is for its durability. CAD-assisted
engineering and CNC-machined parts ensure the fit and finish; a permanently
lubricated, rubber-sealed rear bearing and corrosion-resistant plating on the
crankshaft, camshaft and piston help minimize wear and maximize
performance. Bolt in an FS-91 II, and a large-scale plane can go from a short
roll-out to rocketing vertical to out-of-sight in the span of a few seconds. The
power to impress is always there — and along with it, improved fuel economy
and a mellower, more scale-like sound. The needle valve and mixture control
screw are on the same side of a reversible carb to offer maximum installation
and access ease. OSMG0896