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(Video) Super Duty 4x4 Front Diff Demonstration

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Old Apr 19, 2021 | 06:33 PM
  #1  
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(Video) Super Duty 4x4 Front Diff Demonstration

Hey guys, I'm a member here and here is a couple of my videos. Please subscribe to my channel. My 14 year old punk son (LOVE HIM) told me that I couldn't get 1000 subscribers because I'm just a dumb boomer. For the love of God help me prove him wrong! I have several videos with 20k-30k views but hardly anyone subscribes. I'm posting this across all my Facebook groups too so sorry if you see it a bunch of times. Anyways, here are a couple of videos (part one and two) that I did on my 2020 Ford Tremor about the front diff in action. Maybe it would apply to the non Tremors too. If you got to my channel I have several other videos on the Tremor as well. Help a Boomer out and subscribe!! Thanks Guys!



 

Last edited by Xelvic; Apr 19, 2021 at 06:37 PM.
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Old Apr 19, 2021 | 06:46 PM
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Usually not a fan of people who post on forums just to get views, but hey, whatever works.

By the way I had already watched your second video this morning, before you posted on here, and the first one a few days ago.
 
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Old Apr 19, 2021 | 07:41 PM
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Originally Posted by 4wd6.7L
Usually not a fan of people who post on forums just to get views, but hey, whatever works.

By the way I had already watched your second video this morning, before you posted on here, and the first one a few days ago.
I hear ya, but it's not the views I need, its the subscribers lol. But at least I'm not spamming with crap content. Hopefully you guys won't mind being that maybe you guys will enjoy the videos and you'll find them relevant to these forums.
 

Last edited by Xelvic; Apr 19, 2021 at 08:16 PM.
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Old Apr 19, 2021 | 08:43 PM
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Not a fan of soliciting views either, but enjoyed videos and thought they were informative. Also, where did you get your flag decal?
 
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Old Apr 19, 2021 | 09:01 PM
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The limited slip carrier supplied in the Tremor is a standard Dana trac-lok, or the typical clutch type carrier.

Almost useless mechanically and your test actually caused premature wear to the clutch packs.

The only reason why the 'snow' traction control worked is because the abs module sensed differential tire rotation and pulse applied the brake on the passenger wheel to transfer torque to the driver wheel.

TBH, an open diff would have performed just as well when the abs activated.

Other than that, thanks for the video.
 
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Old Apr 19, 2021 | 09:29 PM
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Originally Posted by CNLB
Not a fan of soliciting views either, but enjoyed videos and thought they were informative. Also, where did you get your flag decal?
If you guys want me to kill the thread, I'll do it. I mean no disrespect to the members of this forum. I'll admit I don't know forum etiquette when it comes to stuff like this. The flag I got from Amazon. Here is a link.
Amazon Amazon
 

Last edited by Xelvic; Apr 19, 2021 at 10:19 PM.
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Old Apr 19, 2021 | 09:36 PM
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Originally Posted by DSLTRK60
The limited slip carrier supplied in the Tremor is a standard Dana trac-lok, or the typical clutch type carrier.

Almost useless mechanically and your test actually caused premature wear to the clutch packs.

The only reason why the 'snow' traction control worked is because the abs module sensed differential tire rotation and pulse applied the brake on the passenger wheel to transfer torque to the driver wheel.

TBH, an open diff would have performed just as well when the abs activated.

Other than that, thanks for the video.
An open differential would not have pulled out of the position he had the truck in. The Trac-Loc is a torque sensing limited slip. Although it is clutch driven, it doesn’t work like many other clutch driven limited slips that simply hold both axles together until break away torque is achieved and the clutches allow the axles to slip. The Trac-Loc clutches apply more pressure to prevent the axles from slipping as more torque is applied. As shown in his video, the application of torque by either spinning the free wheel faster or by holding the brake cause the limited slip to engage stronger. Obviously the brake torque worked much faster and easier on the truck that spinning the tire.
 
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Old Apr 19, 2021 | 09:45 PM
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Originally Posted by Xelvic
If you guys want me to kill the thread, I'll do it. I mean no disrespect to the members of this forum. I'll admit I don't know forum etiquette when it comes to stuff like this. The flag a got from Amazon. Here is a link. https://www.amazon.com/dp/B074C55NL5...p_mob_ap_share
Thanks for the link and I am glad you posted your videos since I enjoyed them. I think they were informative and entertaining. I am not a fan of a lot of stuff on forums as I am sure other members probably dislike some things I post. I leave policing threads to the moderators. Not being a fan is only my opinion. No disrespect perceived here and I meant no disrespect to you.
 
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Old Apr 19, 2021 | 10:18 PM
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Originally Posted by CNLB
Thanks for the link and I am glad you posted your videos since I enjoyed them. I think they were informative and entertaining. I am not a fan of a lot of stuff on forums as I am sure other members probably dislike some things I post. I leave policing threads to the moderators. Not being a fan is only my opinion. No disrespect perceived here and I meant no disrespect to you.
Thanks Man, I appreciate that. If anything it looks like forum members are starting to discuss what the hell kind of front diff we have based off my videos. I'm ready to learn!
 
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Old Apr 19, 2021 | 10:25 PM
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Originally Posted by CNLB
An open differential would not have pulled out of the position he had the truck in. The Trac-Loc is a torque sensing limited slip. Although it is clutch driven, it doesn’t work like many other clutch driven limited slips that simply hold both axles together until break away torque is achieved and the clutches allow the axles to slip. The Trac-Loc clutches apply more pressure to prevent the axles from slipping as more torque is applied. As shown in his video, the application of torque by either spinning the free wheel faster or by holding the brake cause the limited slip to engage stronger. Obviously the brake torque worked much faster and easier on the truck that spinning the tire.
I believe you are confusing GM's "Posi-traction" limited slip to the Trac-lok. Posi-traction uses a cross-pin ramp that develops carrier side pressure on the clutch packs when torque is present. More torque=more clutch plate pressure, ergo more friction.

The Dana trac-lok functions like a simple clutch pack preset with compression springs. No amount of differential operation will change the available friction between the two shafts. In fact, over time the friction coefficient will decrease due to wear on clutch plates(from tests such as this), heat and oil life.

The only reason the OP's truck was able to get out of that scenario was indeed force transfer; not by some fancy, magical differential carrier, but by the passenger-side brake rotor transferring applied torque to the wheel with traction.
 
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Old Apr 19, 2021 | 11:52 PM
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It would be nice if we could just enjoy the forum. I'm not a fan of people who whine about what others post.

If u don't like it, don't look at it. Save the derogatory comments

Thx for the vids. I've been trying to decide if I should order a Tremor.
 
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Old Apr 19, 2021 | 11:55 PM
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Originally Posted by DSLTRK60
I believe you are confusing GM's "Posi-traction" limited slip to the Trac-lok. Posi-traction uses a cross-pin ramp that develops carrier side pressure on the clutch packs when torque is present. More torque=more clutch plate pressure, ergo more friction.

The Dana trac-lok functions like a simple clutch pack preset with compression springs. No amount of differential operation will change the available friction between the two shafts. In fact, over time the friction coefficient will decrease due to wear on clutch plates(from tests such as this), heat and oil life.

The only reason the OP's truck was able to get out of that scenario was indeed force transfer; not by some fancy, magical differential carrier, but by the passenger-side brake rotor transferring applied torque to the wheel with traction.
I was basing my response on my experience with my Tremor and a Dana Spicer video I watched a few years back that descibed the Trac-Lok as having clutches mounted with two conical shaped clutch spacers that compacted the springs and clutches packs harder as more torque is applied. The video and a diagram showed the how the clutch pack had little to no engagement much like and open differential when no torque is applied. Of course now I cannot find the video any more but their website still describes the Trac-Lok as torque sensing. Dana also stated that the Tremor differential takes less torque to rotate resulting in quicker engagement. A simple clutch limited slip is always engaged and would make Dana’s statement senseless to me. I have jacked one front tires of my Tremor up and can spin the tire with both hubs locked with very little efffort. I would say less than 20 lbs. All of my previous simple clutch limited slips took a lot more break away torque to turn, even the severly worn out ones. I am very familiar with both the GM and basic limited slips. That that being said, I have not been into a Tremor diffferential or even seen a diagram or photo of one from anyone else. I will be very disappointed if my front limited slip has no more torque that what it takes to turn my tire. Below is an excerpt from Dana’s website on the Trac-Lok:

Differentials


RELATED MARKETS Spicer® Trac-Lok™ Passive Limited Slip Differential

The Spicer Trac-Lok is a torque-sensing, clutch-style limited slip differential that improves traction and performance. It complements brake-based traction control systems to increase torque transfer and improve brake durability.


 

Last edited by CNLB; Apr 19, 2021 at 11:59 PM.
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Old Apr 20, 2021 | 12:48 AM
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Originally Posted by brandon4
It would be nice if we could just enjoy the forum. I'm not a fan of people who whine about what others post.

If u don't like it, don't look at it. Save the derogatory comments

Thx for the vids. I've been trying to decide if I should order a Tremor.
Make sure to Like and Subscribe!!! Lol

Why can't you just enjoy the forum, whats stopping you? People expressing their likes and dislikes? You just did what you claim you are not a fan of. I think you would be hard pressed to find a forum that doesn't have any of that.

My comment, "Usually not a fan..." came from my experience seeing people join a forum for no other reason but to promote their YouTube channel. Not interacting, not contributing to any discussions or even answering questions about their own videos. To me that's spam.
Obviously the OP does not seem to fit that profile, but you can't blame someone for being suspicious when the first 2 threads/posts are links to his YouTube.

Like I told the OP, I had watched the videos prior to him joining. I have nothing bad to say about them.

Oh, and you should buy a Tremor.

 
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Old Apr 20, 2021 | 02:55 AM
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Exactly

Originally Posted by DSLTRK60
The limited slip carrier supplied in the Tremor is a standard Dana trac-lok, or the typical clutch type carrier.

Almost useless mechanically and your test actually caused premature wear to the clutch packs.

The only reason why the 'snow' traction control worked is because the abs module sensed differential tire rotation and pulse applied the brake on the passenger wheel to transfer torque to the driver wheel.

TBH, an open diff would have performed just as well when the abs activated.

Other than that, thanks for the video.
also for the cost difference for the tremor I can put a real locker and better tires opps I already did that
 

Last edited by FONRDAY; Apr 20, 2021 at 02:59 AM.
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Old Apr 20, 2021 | 02:58 AM
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Exactly

Originally Posted by DSLTRK60
The limited slip carrier supplied in the Tremor is a standard Dana trac-lok, or the typical clutch type carrier.

Almost useless mechanically and your test actually caused premature wear to the clutch packs.

The only reason why the 'snow' traction control worked is because the abs module sensed differential tire rotation and pulse applied the brake on the passenger wheel to transfer torque to the driver wheel.

TBH, an open diff would have performed just as well when the abs activated.

Other than that, thanks for the video.
also for the cost difference for the tremor I can put a real locker and better tires oops I already did that
 
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