Off Road 4x4 Ford Expedition, Last Chance Canyon!
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- Опубліковано 17 жов 2024
- Off Road 4x4 Ford Expedition, Last Chance Canyon! See Front and Rear locked differential system, read below to understand how it works!
Several types of lockers: Some manually activated via air (ARB lockers) others are activated by switches (E lockers) while others such as mine on my 2007 Ford Expedition are a type of electronic 'software' locking system called Control Trac: mimics lockers by locking the center differential and then front and rear differentials.
Explained to me by a Ford tech:
Fords 4x4 off road system Control Trac uses software to lock the center differential and software to control a locked speed and power to the front and rear differentials with equal power and speed mimicking lockers.
Hence why in Ford’s says electronically locked, which in essence is “software locked”. The software mimics mechanical lockers due to the fact of constant equal power and rotational speed to both the front and rear tires when in 4x4 lo or 4x4 hi (Advance Trac traction control button off).
Control Trac center differential locking software works in conjuction with Advance Trac traction control to mimic front and rear lockers.
Advance Trac traction control is comprised of: Engine Traction Control, Two types of Braking Traction Control, Electronic Stability Control (ESC) and Roll Stability Control (RSC).
When Advance Trac traction control button is pressed OFF, It turns off ESC, RSC and Engine Traction Control, and the 1st Brake Traction Control (but not the 2nd Brake traction control) AND..... all of it turns back on when speeds are above 25mph.
Understanding the two types of braking traction control:
1st type of braking traction control:
for on road use when the traction control button is ‘ON’ and when tires slip, the slipping tires will be braked and power will go to the non-slipping tire and this is known as, “Standard Traction Control.” The braking is harsh, quick, easily felt and is also accompanied with engine power braking.
2nd type of braking traction control is used for OFF Road use with Control Track when the Advance Trac traction control button is OFF. This braking traction control, controls the rotational speed of all four tires equally by braking seamlessly to match the speed of all the tires along with the engine power. The braking does not correct traction loss on the ground whatsoever. The braking only concerns itself with helping control equal rotational tire speed to help mimic lockers along with the engine power controlling the same thing. Ford calls it electronic locking as the electronic part is the software part which locks in the power and speed of the tires mimicking front and rear lockers. The braking cannot be felt and there is no engine braking.
The Locking Center Differential:
The ControlTrac 4-wheel-drive system’s center "differential" is a electronically-controlled electromagnetic multi-disc (multi-plate) clutch pack. Through use of sophisticated control software, the multi-disc clutch imitates a traditional geared center differential.
(Diffs Not Locked)
• 4A 4-wheel-drive Auto with high range gearing (1.00:1) Full-time all-wheel-drive capability,
Electronically adjusted torque split to front & rear wheels, Electronically variable center differential, Front driveshaft & rear primary driveshaft allowed rotational speed difference with traction control enabled
(Diffs Locked if Traction Control is turned Off)
• 4H 4-wheel-drive with high range gearing (1.00:1) 4-wheel-drive capability,
Continuous 50/50 torque split to front & rear wheels, Electronically locked center differential,
Front driveshaft & rear primary driveshaft locked with no rotational speed difference, traction control system needs to be off in order to have locked front and rear drive shafts.
(Diffs Locked, Traction Control is automatically turned off)
• 4L 4-wheel-drive with low range gearing (2.64:1) 4-wheel-drive capability,
Continuous 50/50 torque split to front & rear wheels, Electronically locked center differential,
Front driveshaft & rear primary driveshaft mechanically locked with no rotational speed difference
Also in the manual Ford doesn’t recommend using 4x4-high or 4x4-low on pavement when locked. Making tight turns will cause torque windup and drivetrain binding, as the front driveshaft and rear driveshaft can’t turn at different speeds when locked.
Big difference between the Control Trac locking system and standard lockers is Standard lockers you can turn off and on instantly. With Control Trac, once engaged sometimes the system is locked instantly and sometimes it takes the tires to slip for 2 seconds, then the systems locks. Once locked it stays locked until shifted out of 4x4 and just like standard lockers the power to all four tires is equal and constant.
I have driven in Jeeps and Hummers with Standard Lockers and compared the difference and once the Ford Control Trac system is locked, you cannot tell a difference once it is engaged.
www.1LifeLive.com
That rig is so good looking
love your rig! good to see such a nice SUV out on the trails that most people wouldn't think to take out there. I wish we could get these in Australia cos it's def get one.
TenaciousD Thank you! More off road videos soon to come. Just had to take a time out to heal my neck. Have some spine issues to heal but will soon do more off road videos and in the meantime I will be doing other rig videos. 😊👍
You should come to Idaho and do some wheeling
Nice rig man! I did that trail the other day and it was awesome.
Hi and thanks. I think I just found you on IG and started following you I also just subscribed to your channel too. Always good to know someone else in the area. Yes, fun trails out there. I don't like seeing the new fences out there though. Seems like they might start regulating it someday.
@@1lifelive570hey i know its 6 yeats but i hsve 2018 i want to add a front lockers
@@Freedomtooffroad ok so you don’t have electronic mimic Contol Trac on your rig? I have videos explaining it. If you don’t you might have it swap out the entire front to a fixed axel. Guys have done it but I personally didn’t think it worth the hassle as mine has the software that mimics lockers. You might already have it if you have a 4x4 Expedition. You can email me from www.1LifeLive.com
@@1lifelive570 k I'll make sure to email you soon for sure btw it doesn't have control trac my SUV is in USA getting it shipped might take 1 or 2 months because I'm gonna go for vacation
I've been there. My dad used to be part of an opal and gold mine claim out there. Anyways, didn't know you could get locking diffs for those vehicles.
What size rims , back set and tires you have? I have a 2008 Explorer with 18" tires, I'm going to give it a 3 inch lift....
Hi sir, whats the brand of the lockers you use? Thankyou
Yeah definitely is super allterrain expedition. Love it,.
Looking at maybe purchasing an 08 EXPY EB Edition, was hoping to find someone who has built one for overlanding. Can you provide the lift kit name? Also what size tires are you running? Is the gearing sufficient to run that size?
Hello, you can check out my specs at www.1LifeLive.com as I have everything listed. Real quick it’s simple spacers for the lift (rear) and f-150 2009 Icon coil overs (front) so they don’t bind as they have a thin spring that won’t hit the upper control arms unlike Rancho which will, 35” tires and no need to change gearing until you do 37” tires or larger as there is plenty of gearing and power for 35” tires unlike Jeep’s where they used to only have a 6 cyl. There you go. I have only had positive experiences with my rig. It is great for an overland rig. Not a rock crawler but an overland rig. ;-)
Are these software control track lockers available in second gen expeditions?
Where do I buy these bad boy lockers at? I need front and rears!
Hey, I have a 2007 expo. Not as nice as yours but it gets the job done. How did you lock your diffs??
I have open this on my all-wheel drive Astro because I can't afford locking this as of yet but give me time and it will happen cuz I want to do trails
keeping up with the wofford's Michelle Wofford Fun in the sun! Moonshine too! 💪😊🤙
Where'd you get those wheel wells those are sweet
how did you disable the factory traction control system to work well with the lockers, I mean the advancetrac?
I have a 2003 expedition then I will converter same,as urs definitely bro.
Did you put different differentials or lockers in, or by Control Track, do you just mean stock traction control?
Hi Zack.
Here is my updated answer after talking to a Ford Tech. We were both right and wrong in certain respects. Enjoy!
1LifeLive: See Front and Rear locked differential system, read below to understand how it works!
Several types of lockers: Some manually activated via air (ARB lockers) others are activated by switches (E lockers) while others such as mine on my 2007 Ford Expedition are a type of electronic 'software' locking system called Control Trac: mimics lockers by locking the center differential and then front and rear differentials.
Explained to me by a Ford tech:
Fords 4x4 off road system Control Trac uses software to lock the center differential and software to control a locked speed and power to the front and rear differentials with equal power and speed mimicking lockers.
Hence why in Ford’s says electronically locked, which in essence is “software locked”. The software mimics mechanical lockers due to the fact of constant equal power and rotational speed to both the front and rear tires when in 4x4 lo or 4x4 hi (Advance Trac traction control button off).
Control Trac center differential locking software works in conjuction with Advance Trac traction control to mimic front and rear lockers.
Advance Trac traction control is comprised of: Engine Traction Control, Two types of Braking Traction Control, Electronic Stability Control (ESC) and Roll Stability Control (RSC).
When Advance Trac traction control button is pressed OFF, It turns off ESC, RSC and Engine Traction Control, and the 1st Brake Traction Control (but not the 2nd Brake traction control) AND..... all of it turns back on when speeds are above 25mph.
Understanding the two types of braking traction control:
1st type of braking traction control:
for on road use when the traction control button is ‘ON’ and when tires slip, the slipping tires will be braked and power will go to the non-slipping tire and this is known as, “Standard Traction Control.” The braking is harsh, quick, easily felt and is also accompanied with engine power braking.
2nd type of braking traction control is used for OFF Road use with Control Track when the Advance Trac traction control button is OFF. This braking traction control, controls the rotational speed of all four tires equally by braking seamlessly to match the speed of all the tires along with the engine power. The braking does not correct traction loss on the ground whatsoever. The braking only concerns itself with helping control equal rotational tire speed to help mimic lockers along with the engine power controlling the same thing. Ford calls it electronic locking as the electronic part is the software part which locks in the power and speed of the tires mimicking front and rear lockers.
The Locking Center Differential:
The ControlTrac 4-wheel-drive system’s center "differential" is a electronically-controlled electromagnetic multi-disc (multi-plate) clutch pack. Through use of sophisticated control software, the multi-disc clutch imitates a traditional geared center differential.
(Diffs Not Locked)
• 4A 4-wheel-drive Auto with high range gearing (1.00:1) Full-time all-wheel-drive capability,
Electronically adjusted torque split to front & rear wheels, Electronically variable center differential, Front driveshaft & rear primary driveshaft allowed rotational speed difference with traction control enabled
(Diffs Locked if Traction Control is turned Off)
• 4H 4-wheel-drive with high range gearing (1.00:1) 4-wheel-drive capability,
Continuous 50/50 torque split to front & rear wheels, Electronically locked center differential,
Front driveshaft & rear primary driveshaft locked with no rotational speed difference, traction control system needs to be off in order to have locked front and rear drive shafts.
(Diffs Locked, Traction Control is automatically turned off)
• 4L 4-wheel-drive with low range gearing (2.64:1) 4-wheel-drive capability,
Continuous 50/50 torque split to front & rear wheels, Electronically locked center differential,
Front driveshaft & rear primary driveshaft mechanically locked with no rotational speed difference
Also in the manual Ford doesn’t recommend using 4x4-high or 4x4-low on pavement when locked. Making tight turns will cause torque windup and drivetrain binding, as the front driveshaft and rear driveshaft can’t turn at different speeds when locked.
Big difference between the Control Trac locking system and standard lockers is Standard lockers you can turn off and on instantly. With Control Trac, once engaged sometimes the system is locked instantly and sometimes it takes the tires to slip for 2 seconds, then the systems locks. Once locked it stays locked until shifted out of 4x4 and just like standard lockers the power to all four tires is equal and constant.
I have driven in Jeeps and Hummers with Standard Lockers and compared the difference and once the Ford Control Trac system is locked, you cannot tell a difference once it is engaged.
www.1LifeLive.com
1LifeLive Control Trac is just an intelligent traction control. There are no lockers or components other than the center differential. en.m.wikipedia.org/wiki/ControlTrac
Hi Zach, did you completely read the link you posted? The article has nothing to do with traction control which is completely different and explains exactly what I said about Control Trac being able to completely lock the front and rear diffs. Control Trac completely locks the front and rear diffs automatically.
From the article you posted:
Four High and Four Low modes
Four High and Four Low modes were also featured on both Explorer and Expedition. Four High mode tells the intelligent locking multi-disc differential to lock, providing a permanently locked 50:50 torque distribution.[4] The front and rear drive shafts are fully locked, forcing them to rotate at the same speed regardless of tractive conditions. Four Low mode also tells the intelligent locking multi-disc differential to lock, however it instructs the BorgWarner transfer case to select low range off road reduction gearing.[4] Reduction gearing is utilized to reduce the vehicle’s speed to a manageable crawl, and to increase (multiply) the supplied torque coming from the engine. Thus the drive wheels have ample torque to move the vehicle at low speeds. It is also used to control downward speeds while descending steep gradients and to improve the vehicle’s off road crawl ratio.
Both Four High mode and Four Low mode cannot be used on pavement as "driveline binding" and "torque windup" can occur, causing damage to the four-wheel-drive system.
Here is the traction control called Advance Trac you are getting confused about that I also mentioned to you on your article that you posted:
AdvanceTrac and Control Trac are two entirely different things. Advance Trac needs to be turned off for Control Trac to work. I know because I have been doing this for years.
The automatic ControlTrac four-wheel drive system can be coupled with AdvanceTrac electronic stability control, which includes four-wheel electronic traction control. The combination of these two systems is innovative due to a vehicle equipped as such, can continue to move forward with only one wheel having traction.[7] AdvanceTrac's four-wheel electronic traction control system uses the vehicle's four-wheel four-sensor four-channel anti-lock braking system (ABS) and is programmed with additional anti-slip logic to simulate differential locks via aggressively "brake locking" either the front or rear drive axle differentials. By ABS brake locking the front and rear differentials, up to 100 percent of torque can be sent to any one drive wheel, allowing the vehicle to keep moving, even with two of its drive wheels (one front, one rear) completely off the ground.[7]
Here is a much more in depth link that you can read too (hope that helps):
www.ford-trucks.com/forums/928481-controltrac-4-wheel-drive-and-how-it-works.html
1LifeLive the only differential that locks is the center diff. The front and rear "brake lock" but that just means traction control...maybe by another name. Anyways, video still shows that it works.
Hi Zach, it acts exactly the same as any other locker once locked:
"The front and rear drive shafts are fully locked, forcing them to rotate at the same speed regardless of tractive conditions."
also...
"Both Four High mode and Four Low mode cannot be used on pavement as "driveline binding" and "torque windup" can occur, causing damage to the four-wheel-drive system."
That characteristic is exactly the same as any other lockers out there. Yes I agree that it is different, but it works the same.
But don't get it confused with Traction Control which is Advance Trac which works with brakes. That is entirely different and needs to be turned off in order for the Control Trac to work.
Again you can read the link I provided to better understand. www.ford-trucks.com/forums/928481-controltrac-4-wheel-drive-and-how-it-works.html
I have been in many off road rigs with fully locked diffs, and it feels and acts exactly the same. I agree with you that it does NOT have the same components, I am simply using similar verbiage to explain what it does as it does FULLY locks the FRONT and REAR diffs to have fully locked diffs. Most people refer to that as lockers.:
"The front and rear drive shafts are fully locked, forcing them to rotate at the same speed regardless of tractive conditions."
I think there is some confusion about what actually gets locked vs what isn't. If you read the description of the system carefully, it does in fact say it locks the front and rear drive shafts. HOWEVER... the drive shafts are what connect the center diff to the front and rear differentials. That's basically what a locked center differential does... it locks the drive shafts coming out of the center differential so that equal power and rotation is provided to both front and rear differentials. The half shafts from the front and rear diffs to the actual wheels are still open. I think that's where the confusion comes from. Yes, front and rear drive shafts are indeed locked, but the front and rear differentials are open meaning left and right tires are NOT locked. Hope that helps. "Diffs" are not locked, just the center "Diff".
I did just learn something though... I learned why I get better traction in snow and sand when AdvanceTrac is turned off. That's when the center differential gets locked!
All that said, the Expedition does really well even with open front/rear diffs.
Yes there are many ways you can word it. I went to visit a Ford mechanic and he helped me break a down pretty good and then I made a video with the manual. Check it out and thanks for the comment!
;-)
LifeLive: Ford Expedition Off Road 4x4 System Control Trac Mimics ARB, Eaton E Lockers!?
Here is the link below:
ua-cam.com/video/WYJYMFClJcw/v-deo.html
Your truck has open diffs with traction control. The traction control is programmed to mimic a locker but it is not a locker. It has no way to lock axles together, it only applies clamping pressure to the brake that has lost traction. Sorry to disappoint but regardless of the ESOF switch position the differentials are still OPEN!
Hello Leonard. Yes correct I have open diffs and yes I do NOT have traditional lockers.
However you are incorrect beyond that.
In fact the traction control called Advance Trac which does use the brakes has to be turned OFF in order for the Control Trac to work which fully LOCKS the diffs. Control Trac does NOT use the brakes whatsoever.
Big difference compared to simple traction control and not all Ford Expeditions have it.
Most only have the traction control Advance Trac and not the Control Trac. You can read about it yourself here:
(This is all in the manual too)
The Locking Center Differential
The ControlTrac 4-wheel-drive system’s center "differential" is a electronically-controlled electromagnetic multi-disc (multi-plate) clutch pack. Through use of sophisticated control software, the multi-disc clutch imitates a traditional geared center differential. Under normal on-road conditions, it sends 100% of torque rearward, but can send 100% of torque forward if needed. While adjusting torque between the front and rear wheels the software watches for any drivetrain binding or torque windup, and controls the center multi-plate clutch "differential" accordingly to eliminate it.
• 4H 4-wheel-drive with high range gearing (1.00:1) 4-wheel-drive capability,
Continuous 50/50 torque split to front & rear wheels, Electronically locked center differential,
Front driveshaft & rear primary driveshaft mechanically locked with no rotational speed difference,
4-wheel electronic traction control system is enabled and needs to be turned off in order to have locked front and rear drive shafts.
• 4L 4-wheel-drive with low range gearing (2.64:1) 4-wheel-drive capability,
Continuous 50/50 torque split to front & rear wheels, Electronically locked center differential,
Front driveshaft & rear primary driveshaft mechanically locked with no rotational speed difference,
4-wheel electronic traction control system is disabled, ESC and RSC are disabled.
As you can see Control Trac does NOT use brakes to mimic and actually locks the driveshafts, hence why I refer to them as lockers as a general term since they are locked with no rotational speed difference.
Hope that helps you better understand the system.
ALL four wheel drive 07 to 14 Expeditions have the same four wheel drive system, the only option was/is a limited slip rear differential. There is no option to change the 4wd system from the factory. What you are describing is a CDL or central diff lock, this is not a locking axle. Both front and rear axles (differentials are open and never capable of locking up). The transfercase is the only item that locks on your truck, you continue to imply that your front and rear differentials lock which they do not. Hopefully you can better understand the system you are running. Good luck with the build. I'd even be happy to share the source books from ford so you can gain a bit more knowledge on what the system can and can not do.
you mean 4L ?
Wheel well covers
I'm sorry but having an "advanced traction system" for off road use isn't the same as having mechanical, air, or electronic locking differentials on both ends.
This is why I can't take OEM Range Rovers 4wd systems seriously.
If these Ford systems were that effective, you would see waaaay more of these rigs on the trails regardless to them being 4 wheel independent suspension systems or not.
Hi Man O War! Yes you are correct. These systems are sort of the poor man's lockers. There are a lot of disadvantages as they cannot instantly be turned on and locked so you could lose your line or slip the wrong way or pivot up or down until the Control Trac system locks. Those things have happened to me more than once. Once locked however, it acts exactly like my brothers Jeep's ARB lockers and my friends E-Lockers. But, the Ford Expeditions 4x4 only feels like true lockers once locked and the computer figures out when to lock them. The ARB and E Lockers have a massive advantage of the user being able to turn them on instantly when needed (front, rear or both) and keep them on until you turn them off.
The Ford Expedition with its 4x4 system is used quite a bit actually across the world and Ford uses very similar systems in the Ford Raptor.
However the Ford Expeditions suspension system is not that great. I make it work ok for what I do, which is medium off road adventure and overlanding, however to make it better I would have to spend good money to have custom half shafts made and then install longer upper and lower control arms. Priced out it is a good 5k. So...., as of now I am not doing it. However, in the meantime the 4x4 system has worked good enough for me to be VERY happy that its on the Expedition compared to just open diffs without the Control Trac system. It is better explained on my other video: ua-cam.com/video/WYJYMFClJcw/v-deo.html
Take care.
OEM Range Rover's have rear and center electronically activated locking diffs. Unlike Land Cruisers or the Land Rover Defender which only have center locking diffs and rely heavily on brake traction control.