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Old 04-29-2010, 10:38 PM   #1
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Got some parts!

Getting ready to upgrade the axles and suspension on my Quigley. Swaping to leaf springs in the front using Ujoint Offroad parts (thanks for the help Chris!) and just picked up my Axles.
Front and rear

Much bigger tube than my Dana 44 front!

Why the Front tube is so much bigger its a F550 front axle. Dana 60 HD

Even the Brakes are Bigger in Alaska!

Rear is a Full Float out of a 2005 F350 and will be re-geared to 4.88 to match the front. Both will get Detroit TruTrac limited slip diffs. of course the front I will convert to SRW and crossover steering to go with the 8" lift (from stock only 4" higher than now) and the 37in tires.
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Old 04-30-2010, 09:50 AM   #2
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Re: Got some parts!

I've always been under the impression that limited slip in front could be really dangerous in certain situations; sidehills being one such. Do you find that not to be true?
Bill
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Old 04-30-2010, 10:04 AM   #3
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Re: Got some parts!

I've had a full time locker in the front of my Jeep Cherokee. I'd be inclined to go with Bill and say that selectable locker or open are the only two choices for these vans.
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Old 04-30-2010, 12:38 PM   #4
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Re: Got some parts!

The Trutrac is a true torque sensing diff. No clutch pack to wear out and it only shifts power to the wheel with traction and reduces the power to the wheel that is slipping.
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Old 04-30-2010, 02:13 PM   #5
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Re: Got some parts!

Quote:
Originally Posted by Bones_GSXR
The Trutrac is a true torque sensing diff. No clutch pack to wear out and it only shifts power to the wheel with traction and reduces the power to the wheel that is slipping.
Bones,

I think that is the issue. When one wheel loses traction all the power goes to the other wheel. And that can pull the wheel right out of you hand, or make you go where you don't want to go.

On the front, an open differential won't do that, but will continue to steer normally while the rear supplies motive power.

Mike
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Old 04-30-2010, 03:42 PM   #6
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Re: Got some parts!

Any locker or limited slip has some handling issues. As long as you know what you have then you learn to deal with it and soon it never bothers you. I'm just real carefull about who I toss the keys too.
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Old 04-30-2010, 09:49 PM   #7
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Re: Got some parts!

TruTracs are different than anything else as far as limited slips go. I have pushed a 850,000lb 747 on ice without slipping or sliding sideways. In heavy equipment they are called Gleason Thorsen diffs and it is impressive how they work. If you have one wheel on ice that wheel will actually slow its spin as the diff sends torque to the wheel with grip, the only downfall is that if both wheels are on a loose surface you have a 1 wheel wonder untill you apply a draging brake to get it to transfer power. With a locker or limited slip it will go sideways right off the bat. A TruTrac acts like a open untill needed.
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Old 05-01-2010, 06:12 AM   #8
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Re: Got some parts!

I haven't heard "Gleason" for a long long time. People called them a Gleason locker because they do so much more than a posi. You know what you have and how to use it. Thats the key with a Gleason. You let the Gleason and the breaks do the work and not just a lead foot.
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Old 05-02-2010, 07:44 AM   #9
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Re: Got some parts!

You're gonna love the 550 brakes!!!!! Best decision I ever made, that's for sure. My van will tag the bumpstops under hard braking (3" before contact)

I have to add that I prefer a good limited slip up front as well. An open front diff is worthless, and a full locker is too aggressive for all around usage (dirt, rocks, snow, mud, slow speed, high speed, etc)
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Old 05-02-2010, 01:31 PM   #10
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Re: Got some parts!

Thanks for all your help Chris! I am planning on swapping to Hydroboost as well to get even more pressure. The Dana 44 brakes just don't slow very well bare but once I put the Plow on the front it was bad. For what I do with the van I would rather have limited front and rear esp with the TrueTrac's acting like a open until needed.
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