Specifications Benchmark Prop18x8-12 - 20x8-10Plug TypeCM6 Spark PlugRecommended Fuel30:1 - 50:1 gas/oil mixtureRPM Range1,800 - 9,000 rpmCylindersSingleIgnition Weight3.4 oz (95 g), 3.4 oz (95g)Bore1.57 in (40mm)Displacement2.44 cu in (39.96 cc)Type4-stro
| Benchmark Prop | 18×8-12 – 20×8-10 |
| Plug Type | CM6 Spark Plug |
| Recommended Fuel | 30:1 – 50:1 gas/oil mixture |
| RPM Range | 1,800 – 9,000 rpm |
| Cylinders | Single |
| Ignition Weight | 3.4 oz (95 g), 3.4 oz (95g) |
| Bore | 1.57 in (40mm) |
| Displacement | 2.44 cu in (39.96 cc) |
| Type | 4-stroke gasoline powered airplane engine |
| Width | 3.3 in (83.7mm) |
| Length | 4.7 in (118.5mm) from backplate to drive hub |
| Engine (Only) Weight | 2.64 lb (1.2 kg) |
| Stroke | 1.25 in (31.8mm) |
| Crankshaft Threads | UNF5/16-24 |
| Height | 6.2 in (157.2mm) bottom of mount to top of cylinder cover |
| Carb Type | Rear mounted Walbro |
| Prop Range | 18 x 8 – 20 x 10, 18 x 8 break-in |
| Muffler Weight | 4.0 oz (113 g), 4.0 oz (134 g) |
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