Unreal AWD
Submitted: Friday, Nov 21, 2008 at 17:22
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Would someone explain how the AWD systems work on Subaru Outbacks and the Ford Territory? I have been told that Subaru have a low range which means they must have a transfer case. I thought they could just be locked in AWD and used first gear; no redcution. I also understand that the Ford Territory is organised in a similiar way; no transfer case and no reduction. Mind you the Ghia has a six speed box so locked up using first gear and traction control it should behave fairly
well. I would asking it to pull a 1100 kg caravan up a gravel
hill.
Reply By: garrycol - Friday, Nov 21, 2008 at 17:41
Friday, Nov 21, 2008 at 17:41
I know nothing of the Territory but the Subaru has a transfer case on the back of the gearbox. Slip between the front and rear
wheels is provided via a viscous coupling.
Garry
AnswerID:
336353
Reply By: palmy - Friday, Nov 21, 2008 at 19:08
Friday, Nov 21, 2008 at 19:08
The Subys do have low range but it's something like 1.1:1 or 1.2:1 so not exactly crawling.. :)
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Reply By: Peter 2 - Friday, Nov 21, 2008 at 19:54
Friday, Nov 21, 2008 at 19:54
The Territory is pretty useless as a 4wd, no way of locking the centre diff so if one wheel spins then it is all over.
BIL had one and after a few scares on wet gravel roads with a 1 tonne camper trailer on the back he sold it and went back to a Patrol.
Funnily enough when asked to work hard the Territory used more fuel than a 4.8L patrol and only had a weeny fuel
tank to boot.
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336370
Reply By: Member - Phil G (SA) - Friday, Nov 21, 2008 at 20:07
Friday, Nov 21, 2008 at 20:07
Regarding the Subarus, I think you'll only find transfer cases on some of the manuals, and none of the autos.
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336372
Follow Up By: garrycol - Friday, Nov 21, 2008 at 20:17
Friday, Nov 21, 2008 at 20:17
You are partially correct - transfer cases on all (may now be incorporated in the gearbox case) to get drive to front
wheels and rear
wheels - however low range is not on autos, turbo engine cars or street cars such as impreza,
liberty.
Garry
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Reply By: Philip A - Friday, Nov 21, 2008 at 20:59
Friday, Nov 21, 2008 at 20:59
Territories have traction control on the AWD system. It is the same system as on a Holden Adventra.
So theoretically if one wheel spins the brakes should halt it.
However several tests of Territories and Adventras have questioned how good the system is.
I saw a
well set up Territory at
Palm Valley with an Alloy roof box and met three Adventras at
William Creek who were happy with them.
Quote from NRMA "Adventra's Bosch-sourced, traction control-based 4WD system operates in high range only. The torque goes through three open differentials, with a 62 per cent rear/38 per cent front bias to maintain a Commodore style rear drive dynamic character.
It controls excessive wheelspin by sending the torque to where the grip is. It can also apply brake pressure to maintain traction under acceleration where varying levels of slip are detected at different
wheels; braking force is automatically distributed front/rear to enhance efficiency and maintain stability when cornering."
Regards Philip A
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