OS FSa-72 w/F-5030 Silencer OS34720
Sharing the same mounting dimensions as the old FL-70 and FS-70U, the new FSa-72 is a simple bolt-in replacement offering compact external dimensions and power/torque to most types of model designed for .46 2 strokes or .70 4 strokes.
Like all the FSa series, the FSa-72 has internal crankcase oil re-circulation, a super-smooth carburettor with anti 'spit' inlet and an ultra-quiet silencer. If you have a flying filed 'noise' problem, then this is the engine you need for your average sport model.
The new 61N carburettor provides both linear and fuel efficient mixing to gain you reliability and precison control at all RPMs.
The Tradition Continues...
Everyone knows about how the 56FS-a, 81FS-a and 110FS-a deliver superior 4-stroke power and performance, as well as how they've revolutionized the engine industry. Now, O.S. has filled in the missing link with the release of the 72FS-a. Pilots of .60-sized aircraft can now enjoy such FS-a benefits as a blow-by internal oil system. It eliminates the need for a crankcase and re-circulates excess oil throughout the engine. No fuss...No muss...Just a first-rate engine that sets new standards while continuing traditional O.S. quality. The 72FS-a Four-Stroke – only from O.S.
* 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.
* 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.
SPECIFICATIONS:
Stock Number: OSMG0877
Displacement: 0.719 cu in (11.8 cc)
Bore: 1.063 in (27 mm)
Stroke: 0.811 in (20.6 mm)
Weight w/muffler: 18.7 oz (530 g)
Practical rpm range: 2,400-12,500
Output: 1.2 hp @ 11,000 rpm
Includes: 61N carburetor, F-5030 muffler & F glow plug
