Al Kohalic

A mechanical LSD in conjuction with Ford's one wheel spin control works very well with each other at eliminating this. I have been in situations in my truck where one back wheel was in the air and I got out without even needing to put in 4wd. I have a picture of an instance on my home computer, but unfortunately I am on my tablet at work and will have to post them later.

Also, when we went to Moab last year, we rented Jeeps there. I have taken my old Jeep up there in the past, but I rolled it and sold it. The Jeeps we rented were slighlty lifted for bigger tires 2013 Jeep Sports with LSD in the rear and not Jeep Rubicons with front/rear lockers. I asked the guy why he didn't have any Rubicons and he said you practically don't need them out there since the Jeeps had BLD (Brake Lock Differential) just like Ford's one wheel spin control. He said prior to 2011 the BLD was not that great because it took a lot of wheel spin to kick in, but the amount of wheel spin was dramatically reduced in 2011 and up models which greatly increased their capabilities. This and the fact that he said he had to keep sending the more expensive Rubicons back to the dealership which was over an hour away to get the sway bar disconnect that always went out fixed.

I was a bit skeptical at first, but Jeep was not lying when they said the BLD is just as good as lockers in a lot of situations. Those Jeeps went just about anywhere you pointed the nose like my old Jeep. We went through the Klondike and Metal Masher trails (youtube them) with no problems. The few instance I had to getvout and guide my freind that went with us and I could see the front axles BLD working. All it took was a quarter tire spin and it would kick in sending power to the other wheel. Even in instances where one rear tire was off the ground in 2wd it kicked in aiding the LSD to get out without requiring 4wd. Needless to say the system worked very well and I was impressed. The one area that I can see the BLD having issues was when you mashed the pedal to the floor. It gained traction better with slight rock crawling style of throttle than half or WOT.

mikelytle1077

yeah fords electronic limited slip is good. but i had a titan pro 4x previously and man its really good in controlling wheel slip.

Al Kohalic

It's funny that you say that. Not poking fun, it's just funny considering.........

nemosdad

That really is a great video Al. I've brought this up in previous discussions about limited vs locking diffs. (Isn't it ironic that the site for this test is Chevy's proving grounds!) There seems to be this prevailing attitude that a locker is best for any traction problems, when in reality a locker can be a hurdle to the success of traction. Or more accurately the success of forward movement.

RES4CUE

You are the funniest thing I've heard today! You are completely wrong!

First you NEVER engage 4wd on dry pavement, if you do you NEVER turn on dry pavement to bind the drivetrain!

That's just stupid and looking to damage something!

You obviously have no clue how an open, LS, locked diff works! I suggest you go research before you spout your asinine wisdoms here.

Edit: Al covered it really well with his posts.

mikelytle1077

just got done running some high speed trails with a raptor. not sure whats going on but when i press and hold the traction control to disable advance trac its still limiting my power ? in my friends raptor without off road mode engaged its full out without advance trac. i will get video up soon but i think i did okay for almost stock fx4

Logan24

Well I didn't have time to look at the video till about 10 mins ago.
My apologies for being an *** and saying stuff before I knew facts. Thanks for the info Al. Much appreciated. I'll eat the humble pie and look at it as learning something new...
And thanks, Rescue, for being a dick about it. I didn't say I was using 4x4 on dry surfaces on a regular basis. But when there's icy patches here in Alberta it's nice to have 4x4 engaged. However, there is dry patches and binding...on rare occasions...happens. It's not major and it's brief.
Again, sorry for my ignorance guys.

RES4CUE

No problem bud, just giving you a taste of your own medicine.

Yes it may be nice to have but 4wd will not help on ice. It's just not good going from a slick to a dry condition. I know it's going the same speed but stuff happens and turning on dry pavement even rain soaked will cause binding and could lead to breakage.

We all started somewhere and I'm glad you took a step back and learned something.

I'm no expert but have been offroading for years in Jeeps and have had lockers and limited slips. If you have any questions just PM and I will see if I can help and if not I will search and we can both learn.

dkushner

Simplest explanation I've found yet explaining how an open differential works from Chevrolet in 1937. Probably pretty basic for many here, but may be helpful for some:


Great explanation of the difference between open, limited slip, locking, and ABS LSD systems.:

montanaman

Well, I still haven't decided if I'll upgrade the front differential or not, but you guys have surely put up some interesting thoughts! Thanks.


The only time I go offroad, is when I have the dump trailer behind, and I'm loading topsoil or fill dirt into it in a rough field. Since I went to the TrueTrac 30,000+ miles ago, I don't put it in 4WD for that job - it pulls fine with the two back wheels.


I'm just thinking ultimate traction - with FOMOCO's anti-spin braking, and the helical-gear differentials front & rear, like the Raptor.


I'll bet that out of the 69,000 miles on my truck, I don't have 200 miles of 4WD time on it.