Automatic Torque Biasing Limited Slip Differential – DA9011 – ASHCROFT

There are a multitude of different diffs available for your Land Rover – read about the different types of locking diffs

• Fully automatic – needs no driver input
• Totally transparent on road, i.e, no unwanted adverse effects
• Only comes into play when one wheel looses 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 automatic torque biasing limited slip differential 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 pre-load 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.

Note – Due to the nature of the ATB diff we do not recommend the vehicle is brake tested on rollers, ask for a decelerometer to be used instead.