Description: 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 pumpNew 70N carbBall bearing-supported camshaft and crankshaftNew F-5020 SilencerTwo year warranty Includes: One Assembled Engine w/Carburetor and #F Glow PlugOne Muffler w/ManifoldOne 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 usedStarting and Field EquipmentPropeller (see SPECS) Specifications: Bore: 30.4mm (1.20")Stroke: 27.5mm (1.08")Power Output: 2.1 PS, 2.07 HP at 12,000 RPMPractical RPM Range: 2,000 - 12,000 RPMWeight-Without Muffler: 32.5oz (921g)Weight-With Muffler: 35.3oz (1000g)Crankshaft Thread Size: 5/16-24Valve 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 washerWidth: 47mm (1.85") width of engine neglecting the mounting flanges58mm (2.28") distance between the mounting hole centersHeight: 139.5mm (5.49")Suggested Prop(s): 14x9, 14x10, 14x11, 15x8, 15x9, 15x10, 16x6,Construction: Aluminum and Aluminum alloysNeedle Settings: High Speed: 1.5 turns out from fully closedLow Speed: 2.5 turns out from fully closed with the throttle fully closed Comments: Some differences between 2-Stroke and 4-Stroke engines: 4-Strokes are quieter.4-Strokes get better Fuel Economy2-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.
Price: 686.95 USD
Location: Saint Paul, Minnesota
End Time: 2024-03-03T21:01:06.000Z
Shipping Cost: 0 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money back or replacement (buyer's choice)
Model: 1.20FS III w/Pump
Modified Item: No
Custom Bundle: No
Displacement: 1.20
Compatible Fuel Type: Nitro & Glow Fuel
Compatible Brand: Universal
Type: 4-Stroke Engine
Non-Domestic Product: No
Features: Two Year Warranty
MPN: OSMG0935
Compatible Vehicle Type: Airplanes
Compatible Scale: 1:4, 1:5, 1:6, 1:8, 1:10, 1:12, 1:14, 1:15, 1:16, 1:18
Age Level: 8-11 Years, 12-16 Years, 17 Years & Up
Brand: O.S.
