The 4 Stroke Engine vs. the 2 Stroke Engine

With a 4-stroke engineyou will need regular oil changes and you will not need to add oil to you scooter regularly.

With a 2-stroke engine you will need to add oil to your scooter. Our scooters have a separate oil tank so you don't have to measure out the oil, just keep oil in the oil tank and the bike does the rest.

How the 4-stroke engine works:

When the piston moves down fresh air and gas is sucked inside the cylinder from the carburetor. When the piston moves up again the valves are closed and the air is being compressed. When the piston reaches its highest position the spark plug produces a spark that ignites the fumes and causes an explosion. Because of the power of the explosion the piston is pushed back. When the piston moves back up again the exhaust valve is open and the fumes are pushed out the cylinder. Now the whole process restarts.

The 2-stroke engine works a little different:

It performs 2 strokes at the same time (twice) so after only 2 strokes the whole process restarts. A two stroke engine uses the space above and below the piston. Below the piston are fresh gasses, above the piston these gasses are ignited. Assume the piston is in the lowest position with fresh gasses in the cylinder above it. When the piston moves up, these gasses are compressed, but at the same time the air pressure below the piston drops and fresh air is sucked inside. When the piston is in its highest position the spark plug ignites the gasses and the piston is pushed down. About halfway down a channel from the fresh gasses to the exhaust gasses opens and a channel to the exhaust. Because of air pressure differences the fresh gasses flow inside the cylinder pushing the exhaust fumes out. Now the process starts again. As you can see this only took 2 strokes.