Polini have announced the new Thor 190 Light, a 13.2kg two-stroke 193cc engine, which they say has been constructed to give optimum power-to-weight ratio.
It’s available in three options:
- Standard (28.000.024) – Thor 190 Light: € 2.180,00+VAT
- With centrifugal clutch and flash starter, 14.4kg (928.000.025) – Thor 190 Light Centrifugal clutch: € 2.450,00+VAT
- With electric starter, battery charger and 12V connections for flight instruments, 14.9kg (928.000.026) – Thor 190 Light Electric starter: € 2.520,00+VAT
Technical details are as follows:
TRANSMISSION
Belt transmission with 2,83 reduction ratio. To reduce vibrations has been designed for this specific transmission system. In order to resist to the belt strength, a special bearing has been housed on the transmission case side. It can stand a transversal load 10 times higher than the standard roller bearings. It lets the belt have a constant stretch.SPECIFIC POWER UNIT
The power unit with 193cc displacement, 64mm bore and 60mm stroke, is cast in light alloy. It offers the maximum performance with 27 hp power at 7400 rev/min. even at the maximum working temperature. The cylinder liner has a nickel-chrome coating for the best piston sliding. The piston is gravity die-cast in light alloy at high silicon content with 2 chromed and nitride steel rings.EXHAUST SYSTEM
The exhaust system is completely hand made for a better product quality. The muffler has been designed to achieve a compact design, contained dimensions and to reduce its weight. The reduced overall dimensions improve the aerodynamic and grant a low noise level.BETTER COOLING ?The forced air cooling system grants a better air cooling, optimizing the performance and maintaining fixed- temperature.
ELECTRIC STARTER ?Thor 190 Light is also available with electric starter. This model is also provided with a battery charger and one 12V socket for the flight instruments. This engine weights 15,3 kg.
FIXING SYSTEM
The frame-engine fixing points of the Polini Thor 190 Light are exactly the same as the other engines: Thor 130, Thor 200 and Thor 250.
| Polini Engine | 2 stroke monocylinder |
| Cooling | Forced air |
| Bore for stroke | 64 x 60 |
| Displacement | 193 cm3 |
| Power | 27 HP a 7400 R.P.M. |
| Cylinder | Aluminum with Gilnisil coating |
| Compression ratio | 11,4:1 |
| Piston | Two chromium plated rings mm 1 |
| Intake | Reed valve in the crankcase |
| Carburetor | Walbro |
| Air filter | Air box |
| Ignition | Electronic with inductive discharge |
| Battery charger prearrangement | Output power 80 W at 5500 RPM (with electric starter only) |
| Spark plug hood | 5k ? resistance |
| Fuel type | Lead free petrol with 2% synthetic oil |
| Gear reduction unit | Belt transmission with 2,83 reduction ratio |
| Starter (Option electric starter) | Pull starter with self-winding rope. |
| Clutch | Dry centrifugal (for model with clucth only) |
| Muffler | Expansion with aluminum silencer |
| Engine weight | 13,6 Kg – 14,4 Kg with clutch – 14,9 Kg with electric starter |
| Propeller rotation | Counterclockwise |
