SP-56 Two Stroke Engine (exhaust at the top)
The two-stroke dual cylinder SP-56 TS ROS with 56 ccm and rear output shaft is the smallest dual cylinder engine in the Sky Power portfolio.
Forged using the proven SP-28 parts, the SP-56 TS ROS is equipped in the standard configuration with 1 sparkplug per cylinder due to the compact size.
The dual cylinder boxer style offers a low vibration power dense two stroke for below 77lbs or up to 35kg. The generator can be mounted on the rear output shaft.
The cylinder is casted aluminum and the crankcase is CNC machined in order to be able to adjust to customer specific requirements or mounting plate.
The engine is used by customers in small heli config UAS as well as fixed wing platforms.
The following additional configurations can be offered:
- No rear output shaft
- Rear output shaft
- Generator and Controller
- Starter Generator and Controller
| Type | 2-Cylinder Gas Engine |
| Capacity | 56 ccm / 3.42 cu in |
| Power | 4.6 HP / 3.4 KW @ 7000 RPM |
| Speed Range | 2200 – 10000 RPM |
| Weight | incl. ignition 5.54 lbs (2.52 kg) |
| Crankshaft | 4 ball bearings |
| Oil/Gasoline ratio | 1:50 / 2% mix |
| Operating Voltage | 6 – 8.4 V DC |
| Bore diameter | 1.42 inch (36.00 mm) |
| Stroke | 1.10 inch (28.00 mm) |
| Torque | 4.6 Nm @ 6500 RPM |
