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  Electric Motors, Engines & Accessories > Engines Glow Fuel > Engines R/C Glow Fuel Aircraft 4-Stroke - 1.20 & Up Bookmark this Page

O.S. - OSMG0930 OSM35530 35530 531028017108 4531028017108
Manufacturer Stock#
35530
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O.S. FS-120S-E Surpass Ringed 4-Stroke w/o Pump
 
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O.S. FS-120S-E Surpass Ringed 4-Stroke w/o Pump
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Instruction Manuals: Manual 1 (882 KB)
Tower Catalog Page: 201

Stock Number
LXBY64
Retail Price
599.99
Tower's Low Price
$414.99
Stock Status
In Stock
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Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
   This is one of the O.S. Surpass series of 4-stroke model engines.
The Surpass series is the 2nd series of 4-stroke engines (The 1st series was
the FS series, discontinued and replaced by the Surpass series around 1986-7).
"Surpass" refers to the fact that this series gained 30% more power than the
previous FS series.

FEATURES: 30% larger Intake Valves than the FS series Ringed Piston Rear-mounted updraft Carburetor Helix Gear-Driven Camshaft Ball Bearing-Supported Camshaft and Crankshaft Covered under 2-YEAR WARRANTY

INCLUDES: One Assembled FS-120 Surpass w/Carb and No Pump One #F Glow Plug One Exhaust Header One Exhaust Muffler One Choke Valve Extension One Set of Instructions, Poster, and Decals (Wrenches, Choke Valve Extension, and Mounting Template Are No Longer Included per O.S.)

REQUIRES: Fuel: 5%-15% nitromethane with 18% lubricant. Synthetic, castor, or a synthetic/castor blend may be used. NOTE: Certain four-cycle fuels cannot be used due to low oil content. However, SOME four-cycle fuels such as the Wildcat 4-Cycle 15% (CATP9109) may be used because it has 18% oil content. When choosing fuels for this engine, the modeler must be sure to select a fuel with at least an 18% lubricant content. Starting and Field Equipment Propeller (see SPECS)

SPECS: Bore: 31mm (1.22") Stroke: 27.5mm (1.08") Power Output: 1.9 PS, 1.87HP at 11,000 RPM Weight-Without Muffler: 30.5oz (864g) Weight-With Muffler: 33.3oz (944g) Practical RPM Range: 2,000 - 11,000 RPM Crankshaft Thread Size: 5/16-24 Valve Clearance: Between .04mm and .1mm (or between .0015" and .004", measured between the valve tip and rocker arm) Length: 104mm (4.09") from backplate to the front of drive washer Width: 47mm (1.85") width of engine neglecting the mounting flanges 58mm (2.28") distance between the mounting hole centers Height: 138.5mm (5.45") Suggested Prop(s): 13x11, 13x12, 14x10, 14x11, 15x8, 16x6, 16x7, 17x6 Construction: Aluminum and Aluminum alloys

Needle Settings: High Speed: 2.5 - 3 turns out from fully closed Low Speed: Edge of larger sleeve centered, looking down the neck of the carb

COMMENTS: Some differences between 4-Stroke and 2-Stroke engines. 4-strokes are quieter. 4-strokes get better fuel economy. 2-strokes generate more RPM (11,000-13,000 RPM with prop while 4-strokes rev to around 9,500 RPM) 4-strokes generate much more torque and will swing a larger prop. 4-strokes have a realistic sound, like a real aircraft engine. JBN 7/20/93 ir/jl 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 AN R/C AIRPLANE ENGINE. STARTING EQUIPMENT IS IN AIRPLANE KIT ACG. INCLUDES GLOW PLUG. YOU MUST USE FUELS WITH 5%-15% NITROMETHANE AND 18% MINIMUM LUBRICANT CONTENT

Accessories for the O.S. FS-120S-E Surpass Ringed 4-Stroke w/o Pump

Primary Accessories   Building & Field Equipment Optional Accessories
 
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Status
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Qty Discount Available
7.99   In Stock
Subtotal for this Group of Accessories: 27.46  
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Primary Accessories   Building & Field Equipment Optional Accessories

 
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