The brand new Polini THOR 250 features a liquid cooling system, that grants an extraordinary steady power output and better performance at every rpm. 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. It's equipped of big wheels and front fork with shock absorber. Technical Features MODELXENIT THOR 250 Polini Engine2 stroke monocylinder CoolingLiquid cooled Bore for stroke72 x 60 Displacement244 cm3 Power36 HP at 7500 R.P.M. CylinderAluminum with Gilnisil coating Compression ratio11,5:1 PistonTwo chromium plated rings mm 1 IntakeReed valve in the crankcase CarburetorØ28 Air filterAir box IgnitionElectronic and with battery charger possible Battery charger prearrangement Output power 80 W at 5500 RPM Spark plug hood5k Ω resistance Fuel typeLead free petrol with 2% synthetic oil Gear reduction unitHelical teeth in oil bath with 2,8 reduction ratio Starting (Electric starter optional)Pull start with self winding cable FLASH STARTER ClutchCentrifugal in oil bath MufflerExpansion with oval silencer Engine weight18 Kg (19kg with electric starter) without radiator Propeller rotationClockwise Max pilot weight kg95 + 95
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