120iB2 Specifications Sheet             Cylinder Capacity 7.29 cu.in 119.6 ccm     Power Rating 11.5 HP 8.5 kW     Bore Diameter 1.8 in 46 mm     Stroke 1.42 in 36 mm     Weight 8.66 lbs 3930 g     Speed Range 1200-8500 RPM     Crankshaft 3 Ball bearings     Connecting Rod Needle bearings on both ends     Oil / Gasoline Ratio 1:50 - 1:80 Mix     Ignition Input Voltage: 6.0 to 8.0 V 6.0 V NiCD / NiMH or 7.2 V LiPo / Li Ion     Propeller 2-Bladed 26 x 12 26 x 14 28 x 10 28 x 12 30 x 10 30 x 12 3-Bladed 26 x 14 27 x 12