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 A Train without a Ticket?

A Train without a Ticket?
Reading Level
     edHelper's suggested reading level:   grades 5 to 7
     Flesch-Kincaid grade level:   7.83

Vocabulary
     challenging words:    anti-locking, computer-controlled, crankshaft, driveline, friction-producing, Front-wheel, gas-air, internal-combustion, over-spin, Rear-wheel, traction, suspension, transmission, locking, operate, lessen

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A Train without a Ticket?
By Trista L. Pollard 		  
1     What is a type of train that you need for travel, but does not require a ticket? Give up? It's the power train or drive train of a vehicle. You have heard about the engine, the fuel, and the wheels. Now it's time to learn about the underrated, yet equally important, parts of automobiles.
 
2     The drive train is the power train of a vehicle. It includes all of the components or parts between the engine and driving wheels; the clutch and axle, and the parts in the driveline. The axle or drive axle is a pin, bar, or shaft on which a wheel or pair of wheels rotate. On that axle is a set of gears called the differential. The gears are usually located on the rear axle of the vehicle. The driving wheel is the main wheel that communicates motion to the other wheels. The two wheels on the driving axle need to be interconnected so that they receive their energy from the drive shaft. They also need to be free at the same time to revolve at different speeds. This is especially important when the vehicle is rounding a curve because the outer wheel travels farther than the inner wheel and it must revolve faster so the car will not skid. Other components of the power train are the driveline and drive motor. The drive motor is the mechanical system (the electric motor) used to operate the vehicle. In this case that would be the vehicle's engine. The driveline of a vehicle includes the components of the power train between the transmission and the differential. The driveline also includes the drive shaft or axle.
 
3     So what does all of this mean? Besides a lot of components with driving in their names, there are many parts that work together to move a vehicle. Once the internal-combustion engine converts the gas-air mixture to mechanical energy, the drive train takes center stage to put this energy to efficient use. The transmission along with the engine's crankshaft dictates the speed the wheels should move. Depending on the type of vehicle, this communication of speed from the transmission may come in different forms.

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