This is the FS 70 Surpass II Four-Stroke Engine from O.S. Max.
Used for .40 to .46 sized model airplanes.
Based on the features used in the original FS-70 Surpass, and
refined for ease of use and reliability.
FEATURES: New carburetor and tapered needle for smooth throttle
response. 90-degree pressure fitting in crankcase routes blow-by to
intake manifold, resulting in a cleaner running engine. Carburetor
is mounted on centerline of the engine. Both carburetor adjustment
needles are located on one side of carburetor, for easy adjustment.
Black anodized rocker arm cover. Larger muffler for quieter
operation. Crankcase vent is now connected to the intake manifold by
silicone tubing. This keeps the inside of the cowling cleaner.
INCLUDES: One FS-70S II Four-Stroke Engine. One Type #F Glow Plug
One F-4020 Silencer One Exhaust Header Pipe (Wrenches, Choke Valve
Extension, and Mounting Template Are No Longer Included per O.S.)
REQUIRES: Fuel: 10%-20% nitromethane with 18% lubricant.
Synthetic, castor, or a synthetic/castor lubricant 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 due to its 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: Displacement: 11.50cc Bore: 25.8mm (1.02") Stroke: 22.0mm
(.866") Power Output: 1.1hp @ 11,000 rpm Practical RPM: 2,000 to
12,000 rpm Weight-Without Muffler: 20.5oz (581g) Weight-With
Muffler: 22.1 oz (626g) Crankshaft Thread Size: 5/16-24 Valve
Clearance: Between .04mm and .1mm (or between .0015" and .004") _
This is measured between the valve tip and rocker arm. Length: 99mm
(3.90") from the backplate to the front of the drive washer Width:
40mm (1.57") width of engine neglecting the mounting flanges. 50mm
(1.97") distance between the mounting holes on-center. Height:
116.5mm (4.59") Suggested Prop(s): Sport & Stunt models:
11x8,11x9,12x7,12x8,12.5x6 Scale models: 13.8x8,14x7,15x6,16x6
3-Blade: 11x7
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