Unlike the 2 stroke engines, the 4 stroke model has a carburetor to control the gas/air mixture allowing fine tuning of the efficiency. Speed is controlled with the carburetor and gas control valve. The higher efficiency means this model runs upto 2500rpm and produces a wonderful silky sound. A large flywheel with a special starter pull cord and wheel allows a comfortable and safe start. The 4 stroke engine is over twice as efficient as the same capacity 2 stroke models.
The model engine comes complete and ready to run. Gas is not supplied but it can run of any butane or propane source. Click here for a supplier of butane in the uk.
|Speed regulation:||valve on the gas tank and carburetor|
|Crankshaft:||running in ball bearings|
|Number of revolutions:||200 - 2500 rpm (approx)|
|Weight:||2.3 kg - with tank and baseplate|
|Running time:||approx. 30 min per standard gas refill|
|Flywheel diameter:||approx. 123 mm|
|Ignition:||Piezo crystal - high voltage (no batteries required)|