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The following description of a differential applies to a "traditional" rear or front-wheel-drive car or truck: Power is supplied from the engine, via the gearbox, to a driveshaft (British term: propeller shaft), which runs to the drive axle. A pinion gear at the end of the propeller shaft is encased within the differential itself, and it engages with the large ring gear (British term: crownwheel), shown in the diagrams. The ring gear is attached to a carrier, which holds a set of three small planetary gears. The three planetary gears are set up in such a way that the two outer gears (the side gears) can rotate in opposite directions relative to each other. The pair of side gears drive the axle shafts to each of the wheels. The entire carrier rotates in the same direction as the ring gear, but within that motion, the side gears can counter-rotate relative to each other.
Thus, for example, if the car is making a turn to the right, the main ring gear may make 10 full revolutions, and during that time, the left wheel will travel more revolutions because it has further to travel, and the right wheel will travel fewer revolutions correspondingly, as it has less distance to travel. The side gears will turn in opposite directions relative to each other by, say, 2 full turns each (4 full turns with regard to each other), resulting in the left wheel making 12 revolutions, and the right wheel making 8 revolutions.
When the vehicle is traveling in a straight line, there will be no differential movement of the planetary system of gears other than the minute movements necessary to compensate for slight differences in wheel diameter, undulations in the road (which make for a longer or shorter wheel path), etc.
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Re: Differential. what is it and how to set it up? Date: March 07, 2008 02:11PM Posted by: salvasirignano | Registered: 16 years ago |
Re: Differential. what is it and how to set it up? Date: March 07, 2008 02:54PM Posted by: Anonymous User |
Re: Differential. what is it and how to set it up? Date: March 07, 2008 05:08PM Posted by: ElioDeProst | Registered: 16 years ago |
Re: Differential. what is it and how to set it up? Date: March 07, 2008 05:44PM Posted by: harjinator | Registered: 19 years ago |
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Re: Differential. what is it and how to set it up? Date: March 07, 2008 06:31PM Posted by: salvasirignano | Registered: 16 years ago |
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