THOR 303 DS

THOR 303 DS

Polini Motori presents the new Thor 303, a concentration of power and technology. An innovative engine with important novelties that result into reliability, power. Reduced weights, reduced aerodynamic section and moderated depth.

Note: *Shipping charge is not included in this item. Please Contact us for shipping price and details.*

Polini Engine 

2 stroke monocylinder 

Cooling 

Liquid cooled 

Bore for stroke 

76 x 62 

Displacement 

281 cm3 

Power 

38 HP at 8000 rpm 

*Max trust 

120 Kg with Ø 160 cm propeller 

R.P.M. max 

8.400 

Cylinder 

Aluminum with Gilnisil coating 

Compression ratio 

11,2:1 

Piston 

Two trapezoidal chromium plated rings 

Intake 

Reed valve in the crankcase 

Carburetor 

Dell’Orto VHST 28mm 

Air filter 

Air box 

Ignition 

Electronic CDI with adj. advance 

Battery charger prearrangement 

Output power 40 W at 5500 RPM 

Spark plug hood 

5k Ω resistance 

**Fuel type 

E5 petrol or LL AV GAS-al with 2,5% synthetic oil 100% 

*Consumption 

3 Lh 30 Kg a of static trust 

Gear reduction unit 

Helicoidal teeth in oil bath with 2,8 or 3,2 reduction ratio 

Starter 

Flash Starter – (Electric starter -optional) 

Clutch 

Centrifugal in oil bath 

Muffler 

Expansion with aluminum silencer 

Engine weight 

Starting from Kg 22,3 (manual starter model +radiator) 

Propeller rotation 

Clockwise 

*The values have been detected on the sea level at standard atmosphere. The trust and consumption values may vary according to the air temperature and  density.

**E5 means the petrol type  that can be used. E5= unleaded petrol 95 octanes up to 5% of ethanol. This symbol is shown on all the petrol pumps in Europe.

 

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