O.S. FSa-72 II with F-5030 SilencerFour-stroke aircraft engine with glow plug 11.8ccm with double-needle RC carburetor. Power 0.9 kW at 11000rpm. Weight with silencer 476g.Displacement [ccm]11.79Cylinder count1Bore [mm]27Stroke length [mm]20.6Operating RPM
| Displacement [ccm] | 11.79 |
| Cylinder count | 1 |
| Bore [mm] | 27 |
| Stroke length [mm] | 20.6 |
| Operating RPM [ot./min] | 2400 – 12500 |
| Motor power ( 11000 ot./min) [W] | 880 |
| Power (11000 ot./min) [HP] | 1.2 |
| Weight (motor) [g] | 476 |
| Weight ) [g] | 54 |
| Recommended tank volume [ml] | 220 – 300 |
| Recommended spark plug | O.S. MAX Typ F |
| Propeller nut thread | UNF 1/4-28 |
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