Two stroke motorcycles produce power and release the exhaust all in one revolution of the crankshaft. ... Two strokes are have an extremely superb power to size ratio and were the industry standard, until 1997. ... Four strokes are the alternative to a two stroke. ... The four stroke will combust the mixture, making the power stroke, then the piston will come back up, making the gases travel outward. ... The four stroke has two rotations of the crank for every 1 power stoke. ...

• Word Count: 601
• Approx Pages: 2
• Grade Level: High School

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

The compression stroke is when the piston goes from bottom dead center and moves up to compress the air and gas mixture. ... When this happens the power from the burn transfers to the crank shaft which is connected to the transmission, thus resulting in the car moving. ... Now lastly the exhaust stroke comes into play. ...

• Word Count: 496
• Approx Pages: 2
• Grade Level: High School