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O.S. - OSMG0956 OSM34300 34300 531028018228 4531028018228
Manufacturer Stock#
34300
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O.S. 56FS-a Ringed 4-Stroke w/Muffler
 
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O.S. 56FS-a Ringed 4-Stroke w/Muffler
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Product Reviews: Review 1
Instruction Manuals: Manual 1 (1 MB)
Tower Catalog Page: 169

Stock Number
LXRUF7
Retail Price
449.99
Tower's Low Price
$309.99
Stock Status
(Estimated)
Late Dec

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Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
This is the O.S. FS56-a Four Stroke Engine.
Same mounting dimensions as the FS-52 Surpass.

FEATURES

Improvements over the original FS series include;
Elimination of Crankcase venting-excess crankcase oil is now drawn
into the Rocker Cover, injected back into the combustion chamber.
Stronger Connecting Rod, Wristpin and Valve assembly
Extended intake tube on Carburetor restrains the reverse flow of
the air/fuel mixture
Decreased width Camshaft housing for less interference with sides
of aircraft nose section
F-4040 muffler with adjustable offset and outlet direction for
easier cowl installations
40NA two needle Carburetor

INCLUDES

O.S. Max FS56-a Four-Stroke Engine with F-4040 muffler, type "F"
header pipe, glow plug, instruction manual

REQUIREMENTS

Fuel: 5-20% nitro with 18% lubricant content
Propeller: Sport & aerobatic; 13x6, 12x6-8
Scale; 13x6-7, 12x6-8
(break-in engine with prop intended for use on model)
Electric starter, glow starter and field equipment

SPECIFICATIONS

Displacement: 0.569 cid (9.32cc)
Bore: .945" (24mm)
Stroke: .811" (20.6mm)
Practical RPM: 2,400-13,000
Output: 1.0 PS, 0.99 HP
Weight: 14.8oz (419g)
Crankshaft Size: 1/4-28
Break-in Needle Valve Settings: 2-2.5 turns from fully closed
Distance Between Mounting Holes Same Side: .69" (17.5mm)
Distance Between Mounting Holes Opposite Side: .16" (44mm)
Height from Crankshaft Center to Rocker Cover: 3.3" (84mm)
Distance from Crankcase Center to Prop Hub: 2" (50.8mm)
Distance from Crankcase Center to End of Crankshaft: 3.5" (88mm)
Distance from Crankcase Center to Throttle Lever Center:1.3" (32.5mm)
Width of Crankcase Below Mounting Tabs: 1.3" (34.1mm)
Angle of Muffler in Relation to Engine: 11

Needle Settings: High Speed: 2.5 - 3 turns out from fully closed
Low Speed: Flush with carb body

jxs 4/19/07
ir/jxs
updt jxs 8/27/07
updt lmm 3/31/09

– If you need more information, use these O.S. resources –
Click Here: Manufacturer's Product Web Page
Email: enginesupport@hobbico.com
Web Site: http://www.osengines.com/
Phone: 217-398-8970
  Postal Address:
O.S.
3002 N. APOLLO DRIVE, SUITE #1
CHAMPAIGN, IL 61822

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Accessories Needed
 
COMPLETION NOTES FROM THE TECH DEPARTMENT
THIS IS THE O.S.MAX FS56-a 4-STROKE RING AIRPLANE ENGINE WITH MUFFLER. FEATURES: 40NA TWO NEEDLE CARBURETOR, TYPE "F" HEADER PIPE, STRONGER CONNECTING ROD, WRISTPIN AND VALVE ASSEMBLY, DECAL SHEET, REQUIRES: FUEL: 5-20% FUEL W/ 18% LUBRICANT CONTENT, ELECTRIC STARTER, PROP GLOW STARTER

Accessories for the O.S. 56FS-a Ringed 4-Stroke w/Muffler

Primary Accessories     Optional Accessories
 
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Low Price
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Status
 LXJ800 Great Planes Standard ProGlo Starter w/Charger
Accessories Needed Qty Discount Available
12.99   In Stock
 LXRXC4 Tower Hobbies TOWER Power 10% Airplane Fuel Quart
Qty Discount Available
9.19   In Stock
Subtotal for this Group of Accessories: 22.18  
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