|09-03-2011, 11:54 PM||#1|
RCC Junior Contributor
I am: rcvine
Join Date: Jan 2011
Radio of choice:
# of RCs: 1
Feedback: 3 / 100%
Total Props: 0
O.S. FS-120 III Surpass Ringed 4-Stroke w/Pump
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BrandNew in Box O.S. FS-120 III Surpass Ringed 4-Stroke w/Pump $400.00 free shipping
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
Needle Settings: High Speed: 1.5 turns out from fully closed
Low 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 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.
Payment paypal add 3%
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Last edited by vine; 09-08-2011 at 01:11 AM. Reason: price lower
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