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np205 transfer case speedometer gear
The NP205 is a heavy duty OE transfer case used in a variety of Chevrolet, Ford and Dodge applications. The Atlas transfer case is an aftermarket unit that was never offered from the factory on any 4x4 models. Much of the design and basic architecture of the Atlas is based on the Dana 300 transfer case, a compact and very successful unit for Jeep and some international applications. The Atlas itself was never offered in an OE application, but compared to the Dana 300 it offers a number of improvements in design and strength. Since it's designed to work with a variety of transmissions, it's often easier to adapt to non-stock configurations. The NP205 comes with several different mounting patterns and spline counts depending on its original application, making tuning the 205 more complicated (but not necessarily more expensive) than the Atlas. However, 205 is also used in a variety of different gearboxes, so it is quite possible to use all the OE parts sourced from the junkyard for a job (assuming you have the "correct" 205 for the gearbox you want to use) .
Introduction to the role of the transfer case:
1. It is possible to output power to the rear axle.
2. Can output to front/rear axle at the same time.
3. The engine power distribution device.
The following is an introduction to the principle of the transfer case:
1. Separation and connection are realized through two sets of gears.
2. The structure and principle are similar to the first shaft and the second shaft of the gearbox.
3. The time-sharing four-wheel drive conversion operation is realized through the transfer case.
The specific characteristics of the five generations of transfer case development are introduced as follows:
1. The first generation: the transfer case is basically a split structure, spur gear transmission, double shift shaft operation, and cast iron housing.
2. The second generation: the transfer case is also a split structure, which has been changed to full helical gear transmission, single shift shaft operation and aluminum alloy casing, which improves the transmission efficiency to a certain extent, facilitates gear shifting, and reduces noise and fuel consumption.
3. The third generation: A synchronizer is added to the transfer case, so that the multi-axis drive vehicle has the function of shifting gears while driving.
4. The fourth generation: The major change of the transfer case lies in the adoption of a conjoined structure and planetary gear plus chain drive, which optimizes gear shifting and greatly improves transmission efficiency and performance.
5. The fifth generation: the transfer case shell is made of die-casting aluminum alloy material, toothed chain transmission output, and its low gear adopts planetary helical gear mechanism, which is light and reliable, high transmission efficiency, simple operation, compact structure, and lower noise.
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