Ashcroft Automatic Torque Biasing Limited Slip Differential (ATB)

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Artikelnummer: ATB Categorieën: , , ,

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The key features are: – Fully automatic, needs no driver input Totally transparent on road, i.e, no unwanted adverse effects Only comes into play when one wheel loses traction, i.e, a difference in wheel speed Enhances the traction control as it multiplies the bias load created by the braking effect of the traction control Needs no special oils Needs no adjustment as the gears compensate for any wear that takes place Only with 24 spline side gears   The ATB, our latest addition, is a ‘Helical Gear’ type LSD with six gear pockets. There are a number of other LSD available including the ‘plate type’ and the Torsen T1, we believe the ATB is superior to the Plate type LSD principally because of the high preload necessary to make the plate type effective, this high pre load leads to ‘harshness and vibration effects’ and causes high premature wear. The Torsen T1 was the forerunner ATB and relied on a different principle to generate cross torque, effectively using coupled worm and wheel gears, being driven backwards, to create the necessary friction loads. These often failed due to this high loading destroying the worm gears. The helical gear type ATB has many advantages that overcome the objections to other designs. There is a minimal pre-load necessary to engage the gears but this does not cause excessive wear or harshness, the helical gear type is virtually invisible to the driver on normal road use as the gear/pocket friction simply does not occur. So how does this ‘helical gear’ ATB work, as stated earlier there are six sets of helical gears, mounted parallel to the axle, each side ‘sun’ gear drives six helical gears, these mesh with six corresponding helical gears

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