The electromagnetic switch that routes electric current to the starter when the starter switch is turned on or pushed on an automobile or motorcycle. Also called a starter relay. Read More »

People who love the small, lightweight bikes. What the bike lacks in overall power, it gains in its lightweight, small size that makes it easy to ride. The BMW F650 is actually quite big in size for a single and the 650cc displacement is quite large for a single. Single fans might be interested in this bike because an average-sized ... Read More »

The difference in the circumference of the tires on the right and left sides of the car. Since oval track racing is always done turning left, teams put larger tires on the right to help the car naturally turn left. Read More »

Society of Automotive Engineers, the standard setting body for the automotive industry. Read More »

The least-complicated four-stroke engine, using the fewest number of parts and producing less horsepower than a multi-cylinder engine of equal displacement. Because the engine is smaller, it produces a bike that is lighter in overall weight, making it easier to ride. Read More »

A form of race start that begins with the cars at a complete standstill. Read More »

Please see Big Block. Read More »

Motorbikes with chain or belt final drive systems need to have the belt or chain checked for slack. Slack is the amount of free play in the chain or belt: too much slack could cause the chain/belt to slip and jump the sprockets; too little slack (the chain seems tight) causes excessive wear on the final drive system. Check the ... Read More »

Punishment for a rule infraction during a race (usually speeding down pit road). The driver must come down pit road, stop in his pit stall, usually for 15 seconds, then proceeds back to the track. Read More »

A maneuver in which the driver of the trailing vehicle in a draft line breaks the draft by turning (usually to the left if on an oval track), propelling the car around the leader. Read More »