Thor 250ccm Dual Spark

€ 4.990,00 Standardpreis
€ 4.690,00Sonderpreis
Bestell Nr.: 928.000.019


- The cylinder is die-cast in light alloy, it ensures a better thermal stability.
- The piston, gravity cast at high silicon content light alloy, reduces thermal expansion and the coupling slack. The design of the piston top is specific to optimize the compression ratio.
- It is provided with a balancing countershaft; this feature cancels the vibrations and guarantees such a driving comfort never felt during a flight and a longer life for the engine itself. The counter-rotating rollers decrease greatly the upsetting torque-steer for an extra comfort in flight.
- The centrifugal clutch is in oil bath with helicoid mechanical reduction.
- The electric starting is standard but to offer the maximum safety the engine is also equipped with manual starter with easy system thanks to the flash starter device that speeds up and simplifies the movements.
- It is equipped with the comfortable closed-circuit system for the recovery of fuel during transportation and the 12 V output for any use.
Small and compact THOR 250 DUAL SPARK engine has an extraordinary power to weight ratio.
Advanced technology and high performance of the new THOR 250 DUAL SPARK allow a better feeling of driving performance, making the flight more dynamic, responsive and sensitive, besides ensuring even greater stability.

The new THOR 250 DUAL SPARK engine adapts to different types of applications including as two-seat trikes, powered hang gliders, one-seat small three-axis, ULM motor-gliders
Polini THOR 250 DUAL SPARK is a 100% Made in Italy product.
  • Details

    TECHNICAL LIST
    THOR 250 DUAL SPARK
    Polini Engine 2 stroke monocylinder
    Cooling Liquid cooled
    Bore for stroke 72 x 60
    Displacement 244 cm3
    Power 36,5 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 Polini PWK
    Air filter Air box
    Ignition 1 Electronic
    Ignition 2 Electronic with battery
    Battery charger 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 + pull start with self winding cable FLASH STARTER
    Clutch Centrifugal in oil bath
    Muffler Expansion with oval silencer
    Engine weight 18,5 Kg (19,5 kg with electric starter) without radiator
    Propeller rotation Clockwise

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