The engine was small, light and a four-stroke. ... A motorcycle engine can be either a two-stroke or a four-stroke. ... "A two-stroke engine is a simply constructed engine. ... According to David, former motorcycle mechanic, the cylinder head is the area where the gas and oxygen mix on the down stroke, but on the upstroke it is compressed and ignited by the spark plug to produce a mini explosion, which creates power. ... All these parts work together to created enough power to move the motorcycle. ...

• Word Count: 2044
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School