Polini Thor 250 to znany szerokiej rzeszy pilotów silnik. Wykorzystywany przede wszystkim do trajek jedno- i dwuosobowych, a także do lotów na małych, wymagających mocy skrzydłach.
Silnik ten posiada duży zapas części w naszym sklepie : http://shop.pro-fly.pl/pl/29-czesci-silnikow-polini-thor
Wsparcie techniczne : http://www.pro-fly.pl/wsparcie-techniczne/
| Polini Engine | 2 stroke monocylinder |
| Cooling | Liquid cooled |
| Bore for stroke | 72 x 60 |
| Displacement | 244 cm3 |
| Power | 36 HP at 7500 R.P.M. |
| Cylinder | Aluminum with Gilnisil coating |
| Compression ratio | 11,5:1 |
| Piston | Two chromium plated rings mm 1 |
| Intake | Reed valve in the crankcase |
| Carburetor | Ø28 |
| Air filter | Air box |
| Ignition | Electronic and with battery charger possible |
| Battery charger prearrangement | Output power 80 W at 5500 RPM |
| Spark plug hood | 5k Ω resistance |
| Fuel type | Lead free petrol with 2% synthetic oil |
| Gear reduction unit | Helical teeth in oil bath with 2,8 reduction ratio |
| Starting (Electric starter optional) | Pull start with self winding cable FLASH STARTER |
| Clutch | Centrifugal in oil bath |
| Muffler | Expansion with oval silencer |
| Engine weight | 18 Kg (19kg with electric starter) without radiator |
| Propeller rotation | Clockwise |