105STR3 Specifications Sheet             Cylinder Capacity 6.3 cu.in 105 ccm     Power Rating 11.0 HP 8.0 kW     Bore Diameter 1.58 in 40 mm     Stroke 1.10 in 28 mm     Weight 10.10 lbs 4730 g     Speed Range 600-4500 RPM     Crankshaft 2 Ball bearings     Connecting Rod Needle bearings on both ends     Oil / Gasoline Ratio 1:50 - 1:80 Mix     Ignition 4.8 V     Propeller 2-Bladed 34 x 26 3-Bladed Not Listed