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Old Jan 10, 2020 | 12:23 PM
  #13401  
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This is an edited version of my original post which went half way in to identifying why the different wheel speeds are derivatives of the crankshaft when viewed as a function (fx). To much or not enough made it feel incomplete. I did send it all to White though. I gots my proof!!
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"The differential is the final end mechanism that enables the creation of torque in the crankshaft before it is distributed through the transmission, to the drive shaft, and then to the wheels."

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I agree with you 100% about the axles turning at different speeds because of the differential but "differential" and "different" are not the same things. I question the authors statement that torque is the result of the backwards mechanics from the axles to the diff to the driveshaft to the trans to the TC if used and finally to the crankshaft. It seems odd that he doesn't see torque at the rear wheels, regardless of how torque is acted upon between the engine and road, as a result of the mechanical advantage created at the engine. Turn the engine off and what's the torque?

He also has the name of the differential all wrong but I don't know if that matters here although there is a lot to understanding the rear end from why a differential is called what it is. Basically though, different and differential mean very different things. Differential has to do with relationships while different means the lack of relationships.

Last edited by River1; Jan 10, 2020 at 12:26 PM.
Old Jan 10, 2020 | 12:29 PM
  #13402  
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My "ah, ha" was in reference to this portion:

"... mechanism that enables the creation of torque in the crankshaft before it is distributed through the transmission,... "

The diff is *after* the transmission, and *distributes* the torque, it does not create it.
Old Jan 10, 2020 | 12:56 PM
  #13403  
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Originally Posted by OhioLariat
My "ah, ha" was in reference to this portion:

"... mechanism that enables the creation of torque in the crankshaft before it is distributed through the transmission,... "

The diff is *after* the transmission, and *distributes* the torque, it does not create it.
I was confused at the part where he says it's the final end piece of the system but "transmits" engine power to the wheels before the transmission. I thought the "trans"mission transmitted engine power to the rest of the truck and the differential was after the trans lol. Kinda splitting hairs but it's what I got lol
Old Jan 10, 2020 | 01:01 PM
  #13404  
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Exactly Ohio. I'll see if I can find the article again so the entire thing can be read. It's full of those anomalies or questionable statements. The article wasn't in a mainstream publication but it wasn't an off the wall one either. The authors credentials were, ". . . an automotive enthusiast. . . " and that's it. But I bet there are people out there taking everything he wrote as gospel. Sad. I also had just the other day in another PM to White told him about automotive engineers and marketing joes tell journalist the most outrageous things because they knew the journalists wouldn't have a clue and challenge what they were being told. What I caught and told White about was in the "rear steer" link he posted. In that article the source stated that the rear steer uses Ackermann Steering so the rear wheels will turn on the same radius. Exactly the opposite of what Ackermann does. When turning the outside wheel has a larger turning radius then the inside wheel's turning radius which is exactly what Ackermann steering does. Was the source misquoted or was he having fun and f in with the journalist? I don't know but this kind of stuff happens all the time. Too often to be funny. It's almost ridiculous.

I forgot about this until now. There was a question and comment section after the differential article and the author was responding to questions with a lot of nonsense and I didn't see once where anyone challenged him. It might be fun to start a David Letterman's version of Stupid People Jokes with a "Stupid Journalists" or a "Say What" thread?
Old Jan 10, 2020 | 01:06 PM
  #13405  
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Originally Posted by fordguy2100
I was confused at the part where he says it's the final end piece of the system but "transmits" engine power to the wheels before the transmission. I thought the "trans"mission transmitted engine power to the rest of the truck and the differential was after the trans lol. Kinda splitting hairs but it's what I got lol
Yep, you caught it too. As I wrote to Ohio I'll see if I can find the article again so the entire thing can be read. Because there's more. It's not long being maybe a full page with pictures in the magazine.
Old Jan 10, 2020 | 01:36 PM
  #13406  
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Anyone else notice this up in "General F150"? This is what a $99, 3" lift kit gets you. lol

Old Jan 10, 2020 | 01:41 PM
  #13407  
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I know trailmaster wasnt exactly the pinnacle of lift kits but to see the cast fail like that is a new one on me.
Old Jan 10, 2020 | 04:13 PM
  #13408  
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Originally Posted by jprevat
I know trailmaster wasnt exactly the pinnacle of lift kits but to see the cast fail like that is a new one on me.
I'm guessing you at least understand how this is suppose to work and I wouldn't have known it was broken until you mentioned it? lol I'm not envisioning how that stud works with the knuckle but however it works I'm not fond of an extension between the ball joint and knuckle. Gives me the ******. How is the ball joint suppose to work? I suppose it's one way to ensure the movement of the joint is limited to some desired travel. The way it appears to straddle the knuckle involves colorful words that won't make it through the submit process but his post was about getting help\advice on how to get to the castle nut so he can remove it. None of the advice would ever involve any NDT. Can't imagine why? Finally, trying to understand this setup I tried looking the possible kits up. That didn't help as the only Ford shown using this extension is the Excursion. The other trucks that use it are Rams and Tundra's. His troubling parts concerns aside, that shock looks impressive.

This pretty much sums up my opinion of Trail Master which by the way is announced on one website with this, "Get Super Cheap Trail Master." The use of cheap instead of inexpensive is appropriately applied.
Old Jan 10, 2020 | 05:54 PM
  #13409  
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One of the greatest drummers ever has passed on....

https://pitchfork.com/news/neil-pear...sh-dead-at-67/
Old Jan 10, 2020 | 06:14 PM
  #13410  
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Originally Posted by white89gt
One of the greatest drummers ever has passed on....

https://pitchfork.com/news/neil-pear...sh-dead-at-67/
Totally agree



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