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4x4 hi and low, drags when turning...


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Register to remove these ads. It's free! Originally Posted by f16YODA My question is with the new Torsen Differential in ...


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Old 02-06-2012, 08:26 AM   #21 (permalink)
 
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Originally Posted by f16YODA View Post
My question is with the new Torsen Differential in my '12, shouldn't it be differentiating the speed of the wheels? This isn't a locked front diff like in my F-250, correct? Or, am I completely wrong?

From my understanding it may act like a locked diff once the helical gears wind up and do whatever magic that a torsen is, that will lock the front if one wheel is turning faster than the other.

I was reading through the SVT manuals from my '12 yesterday and it did mention in there that steering effort may be increased in 4wd due to the torsen front diff. Honestly I don't have anything to compare it to though, this is my 1st 4wd vehicle.


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Old 03-09-2012, 12:04 AM   #22 (permalink)
 
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I had completely forgot about this thread....

Anyway... I spent a long weekend in Death Valley recently and had a chance to really play with the 4wd system. Binding is definitely less of an issue on the dirt, but I still noticed it rearing its ugly head to a minor degree. With the wheels turned and rolling from a stop (or even crawling) I still had to give the truck a bit more gas than I think would be necessary, to get it going. There weren't any of the nasty clunks or bangs like I experienced in the rain, which is good.

Its just very disconcerting when you're on a narrow, switchback trail, with a 1000 foot drop on one side and a mountain on the other, and you're having to goose the truck just to get around the bend. It kinda plays tricks on your mind.

So I'll just assume what I've experienced is normal, and I guess I'll just live with it for now.


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Old 03-09-2012, 07:05 AM   #23 (permalink)
 
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Originally Posted by puddle hunter View Post
I had completely forgot about this thread....

Anyway... I spent a long weekend in Death Valley recently and had a chance to really play with the 4wd system. Binding is definitely less of an issue on the dirt, but I still noticed it rearing its ugly head to a minor degree. With the wheels turned and rolling from a stop (or even crawling) I still had to give the truck a bit more gas than I think would be necessary, to get it going. There weren't any of the nasty clunks or bangs like I experienced in the rain, which is good.

Its just very disconcerting when you're on a narrow, switchback trail, with a 1000 foot drop on one side and a mountain on the other, and you're having to goose the truck just to get around the bend. It kinda plays tricks on your mind.

So I'll just assume what I've experienced is normal, and I guess I'll just live with it for now.
I won't pile on here , other then to say I would not be running 4 wheel drive on surface streets and taking close to full lock turns , as you know this is when you are feeling most of the binding and this is hard on shit when the tires cannot slide or skid as they would on most off road surfaces. You living in So cal I get the whole 1/16 of an inch of rain can turn the 5/405 into a skating rink and if you want to run 4 wheel on the highway in this conditions that is your choice . Is it going to cause some tire and drive train ware , sure but what the hell . It will really not be that abnormal. As soon as you hit the off ramp I would go back to 2 wheel.
As far as switch backs on dry roads . If they are true switch back roads and the conditions are dry , do you really need 4 wheel . Not likely arguably the binding do to the very tight turns is causing a hazard and a distraction for driving on these roads. Particularly as you are probably going very slow.
Now if you want to rally race in the Raptor around switch backs put just the rear locker on and drift away .
I have driven up Pikes Peak a few times and at about 10,000 it goes to gravel , very well maintained not to narrow but some great switch backs and I would not be in 4 wheel in good conditions .
Well this ended up being more than my 2 cents. Dam Writing cramp and brain cramp here.


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Old 03-09-2012, 11:27 AM   #24 (permalink)
 
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Originally Posted by DEADEYE View Post
I won't pile on here , other then to say I would not be running 4 wheel drive on surface streets and taking close to full lock turns , as you know this is when you are feeling most of the binding and this is hard on shit when the tires cannot slide or skid as they would on most off road surfaces. You living in So cal I get the whole 1/16 of an inch of rain can turn the 5/405 into a skating rink and if you want to run 4 wheel on the highway in this conditions that is your choice . Is it going to cause some tire and drive train ware , sure but what the hell . It will really not be that abnormal. As soon as you hit the off ramp I would go back to 2 wheel.
As far as switch backs on dry roads . If they are true switch back roads and the conditions are dry , do you really need 4 wheel . Not likely arguably the binding do to the very tight turns is causing a hazard and a distraction for driving on these roads. Particularly as you are probably going very slow.
Now if you want to rally race in the Raptor around switch backs put just the rear locker on and drift away .
I have driven up Pikes Peak a few times and at about 10,000 it goes to gravel , very well maintained not to narrow but some great switch backs and I would not be in 4 wheel in good conditions .
Well this ended up being more than my 2 cents. Dam Writing cramp and brain cramp here.
My follow up was lacking in some details that I had covered previously in the thread, so for conversations sake, I'll throw a bit more info in here.

I do know that running 4wd on concrete, and even some dry, hard pack surfaces, is a strain on the system. That being said, the ONE time I did run the 4wd system on concrete, was when we received several inches of rain over the weekend. That was when I noticed the initial bind....and just to be clear, I live nearly 400 miles north of LA, so I'm nowhere near what people consider SoCal. But I take no offense to that, I understand that when people in other parts of the country hear that I live in Cali... they automatically assume the LA area. Its all good.

As for the switchbacks, they were dusty, rocky, desert "roads", with slow crawling sections...that were, in sections, partially covered in snow. This is where I still noticed the binding, but to a lesser degree, due to the tires ability to slip in the dirt. My issue in this situation, and with the system in general, is the binding at even slight turning angles. I'm not talking full lock, although that's definitely binding, but talking a quarter turn of the steering wheel. Take the red mark on your wheel, make it point straight left or right, and that's when I can feel it start to slow the vehicle, even at speed.

In my mind, that minor a steering angle shouldn't be exhibiting binding. If the truck is meant to be an all 'rounder, with rock crawling in its book of tricks. Then the binding should be minimal, if anything, non-existent. There in lies my concern...is my truck broken? Is this normal? I'm not the only who's noticed this trait, so is this acceptable?

For the foreseeable future, I'm just going to live with it. I don't get off road enough for this to bother me, I was just initially concerned about the possibility of damaging my truck. I'm just going to need to be mindful of this finicky trait and love my truck for what it is... the most bad ass factory off roader ever!


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Old 03-10-2012, 08:01 AM   #25 (permalink)
 
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Sorry man I did not see the Stockton CA . I am going to try this today and see how my truck behaves . I will check and let you know .


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Old 03-10-2012, 12:08 PM   #26 (permalink)
 
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Never ever use 4x4 on hardball surfaces and you should never notice a problem.


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Old 03-11-2012, 11:12 AM   #27 (permalink)
 
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Well I did not realy feel any binding as soon as you are describing. I tried on a number of surfaces yesterday .
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