| Features
O.S. 56FS-a 34300 4-Stroke Engine OSMG0956
 Features
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O.S. 56FS-a 4-Stroke Engine
OSMG0956
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Ushering in a new era in O.S.
4-stroke technology: the 56FS-a. It's the first in the alpha series, with
the latest advancements for boosting your plane's performance.
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Mounts with no-mod ease in the
same space as the 52FS.
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In addition to less noise, the
muffler features a multi-positional manifold with a rubber O-ring that helps
prevent oil leakage.
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A newly designed lubrication
system eliminates the need for crankcase ventilation.
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The 40NA carburetor is
equipped with a venturi that reduces the chance of fuel leaking out onto the
cowl, while also creating more positive air/fuel flow.
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It's like giving your 40-size
plane a new lease on life!
Specifications
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Displacement: 0.569 cu in
(9.32 cc)
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Bore: 0.945 in (24.0 mm)
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Stroke: 0.811 in (20.6 mm)
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Practical rpm range:
2,400-13,000
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Output: 1.0 hp @ 10,000 rpm
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Weight w/muffler: 16.26 oz
(461 g)
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Includes: 40NA carburetor,
muffler
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Recommended props: Sport &
aerobatic; 13x6, 12x6-8; Scale: 13x6-7, 12x6-8
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Distance Between Mounting
Holes Same Side: .69" (17.5mm)
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Distance Between Mounting
Holes Opposite Side: .16" (44mm)
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Height from Crankshaft Center
to Rocker Cover: 3.3" (84mm)
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Distance from Crankcase Center
to Prop Hub: 2" (50.8mm)
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Distance from Crankcase Center
to End of Crankshaft: 3.5" (88mm)
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Distance from Crankcase Center
to Throttle Lever Center:1.3" (32.5mm)
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Width of Crankcase Below
Mounting Tabs: 1.3" (34.1mm)
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Angle of Muffler in Relation
to Engine: 11°
Package Contents
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O.S. Max 56FS-a Four-Stroke
Engine with F-4040 muffler, type "F" header pipe, glow plug, instruction
manual
Requirements
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Fuel: 5-20% nitro with 18%
lubricant content
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Propeller: Sport & aerobatic;
13x6, 12x6-8
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Scale; 13x6-7, 12x6-8
(break-in engine with prop intended for use on model)
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Electric starter, glow starter
and field equipment
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