Class: Cars, Off-road / SUV — Model origin:
Background vehicle
Author | Message |
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◊ 2010-12-28 12:15 |
2007-2010 Ford Expedition |
◊ 2010-12-28 14:16 |
This one seem to have EL version ![]() |
◊ 2010-12-28 15:18 |
Yes, it is. The Expedition is sitting on a split mu test gradient. Any vehicle (front, rear or all-wheel drive) relying solely on open differentials cannot make it up the hill. The split mu test is designed to deliberately deprive certain drive wheels of traction, testing the vehicle's torque control/torque management capability, which is needed to successfully climb the hill. The rollers and slick pads you see on the surface induce a traction loss event. It’s a strenuous test and only vehicles with good, effective electronic traction control (ABS braking), limited-slip differentials or locking differentials are able to climb the hill. They state that the test facility is owned by Eaton, which (no surprise) produces limited-slip and locking differentials for torque control/torque management. |