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  #13  
Old 06-22-2012, 07:35 AM
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Re: Was not getting Quadra-Trac II a mistake?

The big difference in systems is responsiveness to traction changes, wheel spin, and how much power gets delivered to the road. YouTube videos are full of brake traction control systems being bogged down and smoking in deep mud, deep sand, deep snow, steep slippery hills. You will see quite a few, including top gear reviews, not having enough power to drive over a larger bolder. For brake traction control to work, a wheel needs to be spinning (sometimes you don't want wheel spin) and it uses up a lot of engine power. Lockers (dangerous) don't and limited slip not nearly as much. So if your 0.1% includes these types of environments, you may want something more effective than QT I. QT I is in the majority of jeeps, however, and works very well on the highways, back roads, mild trails, places most jeeps spend all their time.
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Old 06-22-2012, 08:45 AM
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ColdCase I'm curious to what you said about lockers, why do you think they are dangerous?
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Old 06-22-2012, 08:52 AM
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Re: Was not getting Quadra-Trac II a mistake?

My biggest 4WD challenge is my buddy Doug's driveway during the winter. It is steep, narrow and long. It's shared with his neighbor, who plows it with a farm tractor. Since its gravel he has to keep a layer of snow on it.

I've had 4WD in Fords since 1990; Broncos, Exploders, and my last one, an Expedition. The Expedition was great in the snow, climbing steep grades in deep fresh snow easily. Very sophisticated electronic transfer case and traction control and by far the best snow truck that I have owned. But two years ago I couldn't get up Doug's driveway. The surface was packed down snow, about 20F, so slick it was hard to walk on it. His neighbor, driving my vehicle, could. He did it by going very fast. He commented that he tried that with a Toyota 4WD and couldn't do it, commenting about the engine control slowing the vehicle down.

My new Jeep is QT2. I'm hoping that I don't have the same problem.
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Old 06-22-2012, 08:52 AM
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Re: Was not getting Quadra-Trac II a mistake?

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Originally Posted by ColdCase View Post
The big difference in systems is responsiveness to traction changes, wheel spin, and how much power gets delivered to the road. YouTube videos are full of brake traction control systems being bogged down and smoking in deep mud, deep sand, deep snow, steep slippery hills. You will see quite a few, including top gear reviews, not having enough power to drive over a larger bolder. For brake traction control to work, a wheel needs to be spinning (sometimes you don't want wheel spin) and it uses up a lot of engine power. Lockers (dangerous) don't and limited slip not nearly as much. So if your 0.1% includes these types of environments, you may want something more effective than QT I. QT I is in the majority of jeeps, however, and works very well on the highways, back roads, mild trails, places most jeeps spend all their time.
I've had Quadra Trac II and Quadra Drive II. There is a noticeable difference when you are accelerating on snow covered roads. It's almost like you are driving on pavement. The other systems work fine, but if you want the best, go with the Quadra drive II.
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Old 06-22-2012, 08:54 AM
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Re: Was not getting Quadra-Trac II a mistake?

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ColdCase I'm curious to what you said about lockers, why do you think they are dangerous?
They don't like to let you make turns.
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Old 06-22-2012, 09:03 AM
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Re: Was not getting Quadra-Trac II a mistake?

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Originally Posted by Schweibs View Post
ColdCase I'm curious to what you said about lockers, why do you think they are dangerous?
Axle lockers don't allow one wheel to turn faster than another as you would like around turns. Not an issue on poor traction conditions where one wheel can skid or when a wheel or two are off the ground, but the vehicle quickly becomes unstable when there is good traction. That can throw you off the road or into a roll pretty quick. You need some practice and skill to deal with the handling by unlocking and locking at the optimum times. So they are dangerous if you don't know how to use them, or forget they are locked (happens way too often).
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Old 06-22-2012, 11:57 AM
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Re: Was not getting Quadra-Trac II a mistake?

Here is my take on QT II.

1. It's a Jeep for Pete's sake and it MUST have a 4-Lo. Otherwise, I will buy myself a Subaru.
2. Without QT II, there is big hole in the center, which means it becomes a place to collect trash and dirt.

I know, I know... the 2nd reason is not as valid as the first...

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Old 06-22-2012, 03:04 PM
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Re: Was not getting Quadra-Trac II a mistake?

Quote:
Originally Posted by Aiyer View Post
Here is my take on QT II.

1. It's a Jeep for Pete's sake and it MUST have a 4-Lo. Otherwise, I will buy myself a Subaru.
2. Without QT II, there is big hole in the center, which means it becomes a place to collect trash and dirt.

I know, I know... the 2nd reason is not as valid as the first...

Cheers,
-A
Hey, Watch those Subaru comments. I also have a Subaru and had 2 prior to this one. I love my 4 cylinder boxer engine.
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  #21  
Old 06-22-2012, 03:12 PM
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Quote:
Originally Posted by ColdCase View Post
Axle lockers don't allow one wheel to turn faster than another as you would like around turns. Not an issue on poor traction conditions where one wheel can skid or when a wheel or two are off the ground, but the vehicle quickly becomes unstable when there is good traction. That can throw you off the road or into a roll pretty quick. You need some practice and skill to deal with the handling by unlocking and locking at the optimum times. So they are dangerous if you don't know how to use them, or forget they are locked (happens way too often).
Oh okay yea I see what you are saying. I don't think forgetting to unlock the rear diff would be the end of the world but forgetting to unlock the front could be a big deal.
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Old 06-22-2012, 03:17 PM
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Some of you guys here would be surprised how well QT1 works, I know it's pretty much just AWD but all of my friends that have been with me while I was Jeepin around through some mud and stuff were all impressed. "are you sure this is AWD?"

Now I think everyone should have at least QT2. The only reason I have QT1 is because I couldn't find any used cheap Laredos with QT2.
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Old 06-22-2012, 04:37 PM
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Re: Was not getting Quadra-Trac II a mistake?

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Originally Posted by AAAA View Post
Hey, Watch those Subaru comments. I also have a Subaru and had 2 prior to this one. I love my 4 cylinder boxer engine.
LOL. Sorry... didn't mean to say that in a wrong way. I have a 6 cyl boxer engine!
But, I think, Jeeps MUST have 4-Lo. Who knows, someone might need it if they go over the curb at the mall and get stuck! LOL.
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Old 06-22-2012, 08:40 PM
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Re: Was not getting Quadra-Trac II a mistake?

My other truck (chevy) has an open diff in the back while my work truck has the G80 locker. That locker is nice for some of the rough places I have to go but it will get you in trouble fast, especially on wet or icy pavement if you are not used to it. I actually prefer an open diff when it comes to control but of course once one wheel leaves the ground you are screwed. My toyota tacoma that I traded in for the Jeep had the best of both worlds. Open diff in the rear with an electronic locker. The front was still open but atleast with the rear electronic locker you had more control on different terrains. I don't plan on doing any mud runs or rock climbing in my Laredo anytime soon but I have had in some steep cow/hayfields and I was very impressed with how the QTII worked, especially with the stock Goodyears. I also found my new favorite options, the hill decent control and the option that holds the brakes till you hit the gas on a steep incline. Both work great.
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