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Old 05-01-2003, 02:47 PM   #1
RA29
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Default DCCD doesnt allow full 100% rear?

I thought i read somewhere that the DCCD system allows a full 100% rear wheel drive?

The magazines all say that DCCD allow only a max of 65% rear with 15% variance from the 50/50 split. But the earlier tech articles said that DCCD allows 100% to be moved to the front or rear.

Which is correct?

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Old 05-01-2003, 02:48 PM   #2
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I have never seen the 100% stat, everything I've ever seen.heard was 35/65 max.
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Old 05-01-2003, 03:01 PM   #3
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Quote:
RA29
The magazines all say that DCCD allow only a max of 65% rear with 15% variance from the 50/50 split. But the earlier tech articles said that DCCD allows 100% to be moved to the front or rear.
The DCCD only does 35:65 max split. The only car to have the ability to do 100% front then rear is a Nissan Skyline GT-R R34.
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Old 05-01-2003, 03:02 PM   #4
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Quote:
Originally posted by ImprezaRSinCT
I have never seen the 100% stat, everything I've ever seen.heard was 35/65 max.
Ditto.

Normally the system operate at 35/65, can be switch to 50/50 by the computer in auto mode or can be manually switch to 50/50 by the user.
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Old 05-01-2003, 03:26 PM   #5
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In the picture on this thread, it shows 100% front or rear?

http://www.scoobynet.co.uk/bbs/threa...=143750&Page=1
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Old 05-01-2003, 03:29 PM   #6
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welcome to earth...what articles have you been reading...

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Old 05-01-2003, 03:36 PM   #7
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Quote:
Originally posted by Impreza01


The DCCD only does 35:65 max split. The only car to have the ability to do 100% front then rear is a Nissan Skyline GT-R R34.
A little correction. The AWD system in the Skyline GTR is normally operate at 0% front/100% rear, the max amount of power to the front wheel is 50% as needed. It can never operate in 100% FWD.

Also the R34 is not the only GTR that can do this. All 3 modern GTR (32/33/34) operate the same way.
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Old 05-01-2003, 03:41 PM   #8
somebody else
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Default Re: DCCD doesnt allow full 100% rear?

Quote:
Originally posted by RA29
The magazines all say that DCCD allow only a max of 65% rear with 15% variance from the 50/50 split.
Subaru Of America told me, personally, to my face, 65/35 February. The printed specs have always stated same.
Quote:
Originally posted by Future Rex 0wner
welcome to earth...what articles have you been reading...

Yeah. What he said.


--scott
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Old 05-01-2003, 03:44 PM   #9
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Quote:
Originally posted by RA29
In the picture on this thread, it shows 100% front or rear?

http://www.scoobynet.co.uk/bbs/threa...=143750&Page=1
Really? The picture I see shows a 100% lock ratio. That means the Front and rear are Locked 100% together, or are at a 50/50 power split.
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Old 05-01-2003, 04:28 PM   #10
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Thanks
I think i got confused and assumed Locking=Torque split

So when it is locked 100% to front or rear, how does that relate to the torque split?
Thanks
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Old 05-01-2003, 05:14 PM   #11
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I actually thought the same thing until recently, I never really had an interest in the DCCD. I'm not sure about the new DCCD, but here's what it does in the older cars.

When the dccd is open, it acts a 35/65 torque split ***OPEN DIFFERENTIAL***, as in not LSD. So basicly very rear wheel like in that you can break loose the rear end of the car and drift, just like a RWD car. The other end of the spectrum is a 50/50 strong lock, I don't think it's 100% fully locked, just very tight (not sure though). So the old system had about 7 transistions steps between those points, so you could tune it for what you were doing. The open setup is excellent for agressive track use especially if you have good front and rear LSD's, while the locked position is great for dirt, snow, drag launching, etc.

Kevin
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Old 05-01-2003, 05:20 PM   #12
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the subaru spokeswoman at the New York auto show told everyone that it could change to a full rear wheel drive for that true sports car feel.
I don't think she appreciated my loud HA! wrong! when she said that.
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Old 05-01-2003, 05:30 PM   #13
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Quote:
Originally posted by WRXPRESS
the subaru spokeswoman at the New York auto show told everyone that it could change to a full rear wheel drive for that true sports car feel.
I don't think she appreciated my loud HA! wrong! when she said that.
Those spokeswoman knows way less then car salesman do

We all know how much car salesman actually knows They barely know how much the car is or what color it comes in, let alone how the DCCD works. You'll be lucky if he knows the car is 4WD........
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Old 05-01-2003, 05:34 PM   #14
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Quote:
Originally posted by WRXPRESS
the subaru spokeswoman at the New York auto show told everyone that it could change to a full rear wheel drive for that true sports car feel.
I don't think she appreciated my loud HA! wrong! when she said that.
Yes, while technically she was wrong, at the limit the car will behave like a RWD. There is less weight on the rear wheels, and when they get more torque, they will want to break loose much, much sooner. Once they are loose and spinning, due to the open diff you are very effectively at 100% RWD - enjoy!

Drift away!

Kevin
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Old 05-01-2003, 06:02 PM   #15
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I thought that I read somewhere that if you pull sllightly on the hand break to get the sensor to engage, you will be 100% rwd. Because of the way the center diff disconnects, the shaft that goes to the front spins free, but the rear is still engaged. Thats why you can still stall the car during hand break turns even though the center diff "diconnects".
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Old 05-01-2003, 06:13 PM   #16
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Quote:
Originally posted by PeterJ
I thought that I read somewhere that if you pull sllightly on the hand break to get the sensor to engage, you will be 100% rwd. Because of the way the center diff disconnects, the shaft that goes to the front spins free, but the rear is still engaged. Thats why you can still stall the car during hand break turns even though the center diff "diconnects".
PeteJ,

You misinterpreted what you read.
Pulling the e-brake temporarily disengages the center diff throwing it into "DIFF FREE" open mode while the e-brake switch is tripped. While doing so all standard braking will be circuited to the rear wheels only.

This is documented in the owners manual as applicable to the DCCD;


For complete information on the DCCD as detailed in the owners manual click here.

- Janq
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