O.S. FS-70 Ultimate 4-Stroke w/Pump
This is the O.S. Max FS-70 Ultimate 4-Stroke Engine with Pump.
FEATURES: The FS-70 Ultimate is noticeably more compact than the FS-70 Surpass II making for easy installation in a wider range of aircraft Slide Valve #60U Carburetor for quick and accurate Throttle response, also equipped with regulator that stabilizes the pressurized fuel for reliable performance during aerobatic maneuvers Holes drilled in drive washer to reduce weight Two year limited warranty
INCLUDES: One O.S. Max FS-70 Ultimate 4-Stroke Engine with Pump, type F glow plug, muffler, decal sheet, instruction manual
REQUIRES: 13x7-8 Propeller for sport and stunt aircraft 13x6 Propeller for aerobatic aircraft Glow fuel with 5-30% Nitromethane and 18% (minimum) oil content. 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% 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
SPECS: Displacement: .698 cu in (11.45cc) Bore: 1.091" (27.7mm) Stroke: .748" (19mm) Practical RPM Range: 2000-13000 Output: 1.2ps @ 11000 RPM Weight-Without Muffler: 16.4oz (465g) Weight-With Muffler: 17.7oz (502g) Weight of Muffler: 1.8oz (51g) Crankshaft Size: 1/4-28 Distance/crankcase bottom to top of rocker cover: 4.2" (105.4mm) Distance/bottom of mounting ears/top of rocker cover: 3.4" (87.4mm) Distance/back of carb to center of engine: 2" (50.8mm) Distance/back of carb to outer end of drive washer: 4.3" (109.7mm)_ Distance/back of carb to end of crankshaft: 5.7" (144.2mm) Distance/center of engine to end of crankshaft: 3.7" (94mm) Distance/backplate to end of crankshaft: 4.6" (118.1mm) Distance/drive washer to end of crankshaft: 1.3" (34.5mm) Width between mounting holes same side: .8" (20mm) Width between mounting holes opposite side: 1.8" (45mm) Width/outer edges of mounting ears: 2.1" (54mm) Length of muffler: 5.6" (142mm) Distance/muffler center to bottom of mounting ears: 2.3" (58.9mm) Distance/center of needle valve/bottom/mounting ears: 1.1" (29.6mm) Angle of muffler in relation to engine: 20¡Æ
Needle Settings: High Speed: 2 - 2.5 turns out from fully closed Low Speed: Flush with carb body, then 1/2 turn in
COMMENTS: How to hook up the pump: The nipple in the center of the pump is to draw fuel from the tank The nipple at the 2 o'clock position is from pump to carb The nipple at the 6 o'clock position is to pressurize the tank The nipple at the 10 o'clock postion is for a air intake
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