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Harley options differnt for every one else?

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Old Jun 1, 2006 | 11:19 PM
  #16  
nuclearthreat54's Avatar
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From: Broward County, FL
Originally Posted by fordmantpw
The difference, I think, is that the front and rear driveshafts are not linked together mechanically, but more of a LS between the two to allow slippage to keep from breaking components.
So its like 4WD with LS?
 
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Old Jun 2, 2006 | 12:47 AM
  #17  
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From: Albany, GA
Originally Posted by SnowmaNick
Its not the same diff at all. It is an AWD system, above you said you know what that means. No flame meant, just saying think about it. Think of the old Typhoon, or a Mit's 3000GT VR-4, or even Audi's quatro system. These are dual limited slip differentials. A 4wd system from an FX4 is going to be torn to pieces at hwy speeds. Different tools for different jobs. I wouldn't trust the AWD system on the HD in a mud bog, just like I wouldn't drive on the freeway in 4Hi.
I certainly understand what a true AWD system is, but Ford can not develop and market a totally unique AWD system for 2% of the F150s they build and charge $2.5K for it as an option....it's just not possible from a cost to develop stand point. So without a doubt most of the parts are existing parts. From doing a little research I think its very probable they are using the AWD transfer case from the Expedition (as I mentioned earlier). I would suspect the rest of the front drive line is probably stock 4wd stuff. If thats the case and it works like the "AWD" Expy I had then it only sends power to the front wheels when the rear loose traction....That idea is supported by the only thing I could find from Ford about the system:

Customers now also have the choice between 4x2 and all-wheel drive, with the capability to handle more challenging driving conditions and road surfaces - ranging from dry pavement to winter weather. The new AWD system continuously monitors the wheel speeds and throttle position to determine the appropriate amount of power to send to the front of the truck to help prevent slip. Customers also can choose to override AWD by simply selecting the locked mode.
I wish Quinton or someone that actually works on these trucks would chime in with what they know about the system. I think that would enlighten a lot of us....certainly me included.
 
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Old Jun 2, 2006 | 12:55 AM
  #18  
SnowmaNick
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Originally Posted by RamSS/T
From doing a little research I think its very probable they are using the AWD transfer case from the Expedition (as I mentioned earlier). I would suspect the rest of the front drive line is probably stock 4wd stuff. If thats the case and it works like the "AWD" Expy I had then it only sends power to the front wheels when the rear loose traction....
I appologize if I upset you and I think you are right this is probably the way it works. I misunderstood one of your posts and got it twisted around in my head. The Expy AWD would make the most financial sense.
 
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Old Jun 2, 2006 | 01:05 AM
  #19  
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From: Albany, GA
Originally Posted by SnowmaNick
I appologize if I upset you and I think you are right this is probably the way it works. I misunderstood one of your posts and got it twisted around in my head. The Expy AWD would make the most financial sense.

No, you certainly didn't upset me...I just wasnt being clear with what I was asking and what I was saying.
 
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Old Jun 2, 2006 | 09:51 AM
  #20  
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I've done 70+ in 4wd....

and haven't had any problems (yet). As long as you're in Hi I don't think 4wd limits your speed .
 
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Old Jun 2, 2006 | 10:01 AM
  #21  
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Originally Posted by dexter
I've done 70+ in 4wd....and haven't had any problems (yet). As long as you're in Hi I don't think 4wd limits your speed .
Yup, you're only supposed to use it up to 55 mph, I believe.

Just curious, why the hell were you going 70 mph in 4HI!?
 
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Old Jun 2, 2006 | 10:13 AM
  #22  
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From: In a van down by the river
I've also done 70 in 4wd hi. Going down the highway in the winter with some snow on the roads. It didn't whine, jerk, or anything like that.

I'm pretty sure you can go over 55 in 4wd HI. I've NEVER seen anything in the owner's manual to the contrary and I looked for this exact bit of information before last winter.

The only thing is you can't drive above 55 in 4WD LO, and it's discouraged from switching in and out of 4WD HI above 55 MPH.

Duke
 
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Old Jun 2, 2006 | 10:32 AM
  #23  
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Originally Posted by F150 Duke
The only thing is you can't drive above 55 in 4WD LO, and it's discouraged from switching in and out of 4WD HI above 55 MPH.
I don't know about all of that, have you ever driven in 4LO? I wouldn't want to go faster than 20 mph in 4LO.
 
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