What does the "diff lock" do?
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What does the "diff lock" do?

Mark Stopps, Operations manager at Experience the Country, explains a little about the centre differential, which is normally fitted to most 4x4 vehicles.

Why do we have a centre differential or "diff" and why lock it is the question asked on many BORDA training courses and to many people it is all a bit like black magic.

A centre differential is fitted to most four wheel drives vehicle with full time/permanent four wheel drive system to prevent transmission damage when turning on hard  surfaces.

The centre differential allows the front  and rear axles to  travel different distances  and speeds  when the vehicle goes around a corner.

The down side of any differential is they will send the drive to the easiest wheel to turn so on a  4x4 vehicle with a centre differential it is possible for the  vehicle`s drive to be sent to one wheel on one axle.

On most 4x4 vehicles this is overcome by being able to lock the centre differential thus dividing the drive equally to both axles therefore offering much improved traction.

Want to know more about the capabilites of your vehicle? 

Experience the Country offer a range of professional and recreational training courses, certificated by the British Off Road Driving Association.

For more information contact us on 01980 630665 



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Experience the Country is an outdoor/indoor pursuits and 4x4 off-road driving centre set on a beautiful 800 acre country estate in the heart of the Buckinghamshire countryside, complete with activity lakes, off road courses, woodlands, fields and a very large indoor arena. We are located on the western edge of Milton Keynes, just a short drive from Bletchley train station, central Milton Keynes, the M1 and M40.

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