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Output Power: 2.5 HP at 9,000
RPM
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Idle Speed: 1,750 RPM
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Static Thrust: 6 kg Pulling
Force/100 meters altitude 5.3 kg Pulling Force/1,800 meters altitude
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Displacement: 1.22cu in (20cc)
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Bore and Stroke: 1.3 x 1.0"
(32 x 25mm)
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Compression Ratio: 10.5:1
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Weight: Engine: 22.93oz.(650g)
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Exhaust: 1.76oz (50g)
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Ignition: 4.23oz (120g)
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Total: 28.9oz (820g)
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Gasoline/Oil Mixture: 30:1
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Gasoline Octane Rating: 87-93
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Recommended Propellers: 14x10,
15x8, 16x6, 16x8, 17.6, 18x6 (break-in prop not specified)
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Ignition Battery: 4.8 - 6V,
BEC required if LiPo battery is used
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Spark Plug: CM6
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Spark Plug Gap: 0.018 - 0.020"
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Plug Installation Torque: 7 -
8ft-lbs
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Carburetor Adjustments;
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Low Speed Needle: 1.5 turns
out as a starting point, adjust for a smooth idle and a reliable transition
to high throttle
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High Speed Needle: 1.5-2 turns
out from closed, adjust needle to peak
-
RPM, if engine slows or dies
at full throttle, the high-speed mixture is likely too lean
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Height from bottom/Crankcase
to top of Cylinder Head: 5.4" (138mm)
-
Height/bottom/of Mounting Tab
to top of Cylinder Head: 3.4" (87.5mm)
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Width of Cylinder Head: 2.5"
(65mm)
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Width at Mounting Tabs: 2.8"
(70.5mm)
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Distance/Mounting Hole Centers
Same Side: 1.0" (26mm)
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Distance/Mounting Hole Centers
Opposite Side: 2.4" (60mm)
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Height of Exhaust Opening:
0.42" (10.8mm)
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Width of Exhaust Opening:
0.83" (21mm)
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Length from Carburetor to
Front Bearing: 4.5" (114mm)
-
Length from Carburetor to Prop
Hub: 5.1" (130mm)
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Total Height of Muffler
including Exhaust Pipe: 3.8" (96mm)
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Center of Muffler Exhaust
Opening to end of Pipe: 2.4" (61mm)
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Muffler Width: 2" (52.1mm)
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Exhaust Pipe Inner Diameter:
0.56" (14.2mm)
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Crankshaft thread size: 8mm x
1mm