POLINI THOR 250 engine - Ø 28 Carburetor Dual Starter

Description

POLINI THOR 250
ENGINE
928.000.015 – Ø 28 Carburetor –
Electric starter+ Flash starter
Polini THOR 250 engine features a liquid cooling system, that grants an extraordinary steady power output and better performance at every rpm.
Thor 250 engine is small and very compact with a great power/weigh ratio.
The passenger has a "shopping cart" style bar that they can push when beginning the inflation run. This makes it easy for them to stay focused on moving forward until your are airborne. The U-shaped rigid frame keeps the passenger straight in front of the pilot. When using standard spreader bars, these can allow the passenger to move to one side or the other, resulting in a very dangerous situation.
The die cast light-alloy aluminium cylinder grants a better thermal stability. The liner with Nickel-Siliceous coating improves the piston sliding, its resistance to wear and abrasion. The piston, gravity cast at high silicon content light alloy, reduces thermal expansion and the coupling slack. The piston top design is specific to optimize the compression ratio. The advanced technology and the great performance of the new THOR 250 gives a better feeling when driving making the flight even more performing, dynamic, reactive, beside granting more stability. THOR 250 is provided with a balancing countershaft; this feature cancels the vibrations and guarantees such a driving comfort never felt during a flight and a better engine lasting.
Polini Motori deeply directed its attention to the security matter too. THOR 250 is in fact provided with a centrifugal clutch entirely in oil bath, with a mechanical gear with helical teeth. The counter revolving rollers considerably decrease the upsetting torque-steer for a further flight comfort.
The hand starter is easier thanks to the flash starter device, which speeds up and simplifies the movements. THOR 250 engine distinguishes itself for many other advanced solutions, as, for example, the comfortable closed circuit system for the fuel recovery during transportation and the 12V output for any eventual electrical use. A version with electric starter is also available as optional. The engine has already confirmed its extraordinary performance features during the tests made on the test benches by the engineers of Polini Motori.
THOR 250 engine adapts itself to various application types, as two-seat trikes, powered hang gliders, one-seat small three-axis, ULM motor-gliders, ULM.
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 Bowl
Air filter
Air box
Ignition
Electronic 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
Pull start with self winding rope Flash Starter – Electric starter (optional)
Clutch
Centrifugal in oil bath
Muffler
Expansion with oval silencer
Engine weight
19kg with electric starter - without radiator
Propeller rotation
Clockwise
100% MADE IN ITALY