The French made an explanation that the very first vehicle was made in the 1860s, based on their point of view. Having the power go from the engine to the wheels was almost impossible back then, but the self-taught engineer, George Selden, kept trying. In 1877 George came up with a notorious front-drive carriage. This carriage was first made up as an idea in a garage. George started out by taking scrapped parts and making a drawing of an engine. …show more content…
When four wheel drive is engaged the twisting force, torque, spins all four wheels but at different times. The amount of torque created by a vehicle is determined by the amount of traction that the car or truck has at the time. When a car makes a turn, weight shifts to the outside wheels. When the car or truck speeds up weight shifts to the rear wheels. The more weight on a tire, the more traction it has. The main reason why is because the more weight there is, the harder the tires push down. In this process of weight distribution the tires catch hold on the road or whatever surface that the vehicle is driving on. …show more content…
Some good examples for these types of situation are snow, off roading, and climbing slippery hills. In snow traction is hard to get so it takes a lot for a vehicle to push through. The only way to get through or out of the snow is to realize the limited amount of traction at that time and to reach that available amount of traction. In four wheel drive all four tires can use the force to gain traction and hopefully pull itself out of the snow. When going off roading it can be similar to being in the snow. When playing in the mud the more the tires spin the deeper you go, at least in snow there is a chance of getting out without having to get towed or dug out. Crossing a stream or mud puddle is different, mainly because if the car accelerates and gets moving fast enough there will be enough traction at first to hopefully just plow through the puddle or stream. But, even if a four wheel drive car does get stuck the four wheel drive can still help when getting pulled out. Getting up a slippery hill is a terribly hard and difficult task. When doing this task you need a lot more traction then you do in the snow or in the mud. But, four wheel drive can maximise the amount of traction needed to get the car pulled up the hill. There are also some Situations that a four wheel drive vehicle has no