FS-120Slll w/Pump

FS-120Slll w/Pump

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FS-120Slll w/Pump

Brand: O.S Engines
$679.99
Out of Stock
Availability:
Out of stock
UPC
4531028017146
Part #
OSMG0935
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 this series gaining 30% more power than the previous FS series.

FEATURES: Specially developed PD-07 pump New 70N carb Ball bearing-supported camshaft and crankshaft New F-5020 Silencer Two year warranty

INCLUDES: One Assembled Engine w/Carburetor and #F Glow Plug One Muffler w/Manifold One Set of Instructions, O.S. Poster, and Decal (Mounting Template Is No Longer Included per O.S.) One additional coarse needle for less sensitive carb adjustment.

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 a 18% lubricant content. Starting and Field Equipment. Propeller (see SPECS)

SPECS: Bore: 30.4mm (1.20") Stroke: 27.5mm (1.08") Power Output: 2.1 BHP at 12,000 RPM Practical RPM Range: 2,000 - 12,000 RPM Weight-Without Muffler: 32.5oz (921g) Weight-With Muffler: 35.3oz (1000g) 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: 102mm (4.09") from backplate to the front of the drive washer Width: 47mm (1.85") width of engine neglecting the mounting flanges 58mm (2.28") distance between the mounting hole centers Height: 139.5mm (5.49") Suggested Prop(s): 14x9, 14x10, 14x11, 15x8, 15x9, 15x10, 16x6, Construction: Aluminum and Aluminum alloys

COMMENTS: Some differences between 2-Stroke and 4-Stroke engines: 4-Strokes are quieter. 4-Strokes get better Fuel Economy 2-Strokes generate More RPM (11,000-13,000 RPM with prop and 4-Strokes rev to around 9,500 RPM) 4-Strokes generate much more torque and will swing a larger prop. 4-Strokes have a more realistic sound, like a real aircraft engine.

The new Surpass engines (Version II and III) have more power than their predecessors and they also have more corrosion prevention on the inside of the crankcases. 5-7-97 djg ir/jl

Note: This is not a comprehensive list of all compatible products and even though we try our best to keep this list accurate, compatibility is not guaranteed. Please consult the manual for your vehicle, the manufacturer of the product, or contact us here at Hobby Wholesale to confirm compatibility if you are unsure.

This item is a Accessory Part for these products:


  • Hangar 9 | Ultra Stick 10cc ARF, 60" - HAN2345
  • Hangar 9 | Valiant 10cc ARF, 69" - HAN5080

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