AWD front to back torque split
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AWD front to back torque split
I thought I had read on this board that the power was split 70 rear 30 front....in this article fromTruck Trend it says in the following paragraph that the aerostar system runs 98% rear, is this correct?
Another alternative is an electro-magnetic clutch, initially used on Ford's 90's Aerostar AWD and now found in its ControlTrac (Expedition, Explorer, Navigator). This system uses an electromagnetic mechanism controlled by a computer receiving input from driveshaft speed sensors to variably apply pressure to a clutch pack in the transfer case. In "auto" this system defaults torque split 98 percent to the rear, adding front drive only as slip is detected. While the system can vary up to 100 percent output to the front, complete lack of traction at the back would imply at least partial loss at the front, so the front-axle assembly will not have to cope with all the engine's output. This is an important consideration--even a small V-8, run through low-range first gear at full throttle, could generate 10,000 lb-ft of torque to one axle, and many front axles simply won't take it.
Another alternative is an electro-magnetic clutch, initially used on Ford's 90's Aerostar AWD and now found in its ControlTrac (Expedition, Explorer, Navigator). This system uses an electromagnetic mechanism controlled by a computer receiving input from driveshaft speed sensors to variably apply pressure to a clutch pack in the transfer case. In "auto" this system defaults torque split 98 percent to the rear, adding front drive only as slip is detected. While the system can vary up to 100 percent output to the front, complete lack of traction at the back would imply at least partial loss at the front, so the front-axle assembly will not have to cope with all the engine's output. This is an important consideration--even a small V-8, run through low-range first gear at full throttle, could generate 10,000 lb-ft of torque to one axle, and many front axles simply won't take it.
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Originally posted by Mikeman
The factory service manual and/or the owner's manual for my '95 puts the value of the split (under normal conditions) at 30 front, 70 rear.
The factory service manual and/or the owner's manual for my '95 puts the value of the split (under normal conditions) at 30 front, 70 rear.
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