The Centre Diff On Hills Problem: Grenadier vs Patrol vs LC300 vs Defender - Part 6

#grenadier #patrol #defender #lc300 #centrediff #cdl

Why is it important to lock your centre diff offroad and especially on hills? Explained in this video. Some modern vehicles such as Defenders in this example have 'smart' centre diffs or clutches which vary the front/rear lock. This is done to improve performance, eliminate transmission windup or bind, and make the vehicle easier to use, but if not implemented correctly can lead to the lock unlocking when you don't want it. We noticed this with the Defender on test, and show some ways to drive around the problem.

Some L663s Defenders have CTR, or Configurable Terrain Response which can force a centre lock and that seems to really force it on most of the time, but as it's software controlled you can never be sure what the computers will do. Other L663s don't have this option and nor does any other Land Rover.

More and more 4x4 companies are moving to smart centres, and I hope they all pay attention to this problem and address it. Ford didn't on the Gen 1 Everest, but fixed it on the Gen 2 as an example.

Some vehicles have centre diffs, others clutches, others a combination. Functionally they all do the same thing; allow 'drive' to be sent to both front and rear axles which can turn at different speeds to allowing cornering.

Windup Explained (reason for centre diffs)
   • Transmission Windup Explained (transf...  

Ford Everest issues
   • How (not) to park a 4x4 on a hill - w...  


Part 1 Intro, suspension, climbs    • 4X4 Tourers Offroad: Grenadier,  Defe...  
Part 2 Slow Race; crawl ratios, descents    • Grenadier vs Patrol vs LC300 vs Defen...  
Part 3 Slippery Climb    • Grenadier, Defender, Patrol, LC300, P...  
Part 4 Clearance Climb    • Grenadier vs Patrol vs LC300 vs Defen...  
Part 5 Momentum    • Grenadier vs Patrol vs LC300 vs Defen...  
Part 6 The C/D Problem on Hills    • The Centre Diff On Hills Problem: Gre...  
Part 7 Lockers vs BTC    • 4X4 Tourers Offroad: Grenadier,  Defe...  

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