The Sky Power SP-55 TS ROS is equipped in the standard configuration with 2 sparkplugs per cylinder as well as a rear output shaft (ROS) for additional equipment mounting. The engine is used by customers for fixed wing, helicopter and VTOL aircraft on the upper end of the “below 55 lb” or “up to 25 kg” class UASs as well as hybrid configurations to produce electricity. The Sky Power SP-55 TS ROS engine is equipped in the standard configuration with a twin ignition unit. The carburetor is top mounted.
The cylinder is casted aluminum and have been manufactured in its current form for over a decade. The Crankcase is CNC machined to be able to adjust customer specific parts to it.
| Type | 1-Cylinder Gas Engine |
| Capacity | 55 ccm / 3.35 cu in |
| Power | 3.9 hp / 2.9 kW @ 6500 rpm |
| Speed Range | 2200 – 10000 rpm |
| Weight | incl. ignition 5.68 lbs (2.58 kg) |
| Crankshaft | 4 ball bearings |
| Oil/Gasoline ratio | 1:50 / 2 % mix |
| Operating Voltage | 6-8.4 V DC |
| Bore diameter | 1.77 inch (45.00 mm) |
| Stroke | 1.38 inch (35.00 mm) |
| Torque | 4.7 Nm @ 5500 rpm |
| Type | 1-Cylinder Gas Engine |
| Capacity | 55 ccm / 3.35 cu in |
| Power | 4.1 hp / 3.0 kW @ 7000 rpm |
| Speed Range | 2200-8000 rpm |
| Weight | without subcomponents 6.08 lbs (2.76 kg) |
| Crankshaft | 4 ball bearings |
| Oil/Gasoline ratio | 1:50 / 2 % mix |
| Operating Voltage | 12-15 V DC |
| Bore diameter | 1.77 inch (45.00 mm) |
| Stroke | 1.38 inch (35.00 mm) |
| Torque | 4.8 Nm @ 5500 rpm |
| Dimensions | 31.6 × 26.1 × 25.2 cm |
| Type | 1-Cylinder Gas Engine |
| Capacity | 55 ccm / 3.35 cu in |
| Power | 2 kW pure electrical |
| Crankshaft | 4 ball bearings |
| Oil/Gasoline ratio | 1:50 / 2 % mix |
| Bore diameter | 1.77 inch (45.00 mm) |
| Stroke | 1.37 inch (35.00 mm) |
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