PLEASE READ BEFORE BUYING AN E LOCKER. This video clearly shows the locker unlocking temporarily while Changing direction. This is fine when there's no load but when theres a large amount of load like recovering from being bogged that 6 inches of going from locked to unlocked then back to locked is very similar to engaging the locker while 1 wheel is spinning faster than the other. This exact situation has caused my locker to fail. The car is fully drivable but the locker does not lock in anymore whatsoever. There is proof as each ramp has stress cracks proving the damage was caused while reversing and going forwards which is exactly the situation that occurs when recovering a bogged car from sand. So far Harrop have denied my claim and I am currently fighting this as I never ever engaged the locker unless I was stationary or rolling slowly in a straight line with no throttle.
Be good to check consumer law while you do your engineering analysis. You might find the consumer guarantee entitles this bloke to a warranty repair or a refund.
@@archibaldchadwick1668 unless the damage was caused to improper use, which is what the engineering analysis would determine. Definitely get another independent analysis done.
My experience with Harrop E-locker is as follows. My Harrop E-locker self locked on a freeway @~90km/h (I have the fuse removed when not off-road) and not only destroyed the crown wheel and pinion but also ripped out some of the front diff mounting on my ford Ranger. It was a horrific self destruction of a diff center that only ever had one off road engagement (just to try it 4 days prior) and under 1,500km/a week since installation. Harrop will not honor their basic manufacturers warranty (item 2.1) where it states that they will favour the consumer in a warranty claim, instead all they have been doing is looking for an out before they will honor their primary statement in their own warranty . Harrop customer care and warranty has to be the worst i have experienced as a consumer..They will blame anything with "Failure is difficult to pinpoint" "backlash could have been a contributing factor"- that's what virtually makes up their "engineering analysis"..Here i am left with no vehicle for 2 months and have no option but to go to ACCC. It took Harrop more than a month to get back to me and refuse the warranty claim and they still haven't returned my diff so i can have a mechanical engineer write a report, Even though the reputable and qualified Diff specialist that they are now throwing under the Bus has requested the box of shrapnel be sent back . (they are probably arguing about a $40 freight cost) after 2 months and i have had to purchase a new front diff assembly just to get the car back on the road. (I will be putting on an air locker as i will not do business or placing my safety or the safety of my family with Harrop again) I will be sure to update the community on how this ends up. As a 4x4 and touring enthusiast to others i can only suggest that you do your research and choose wisely.
@@marshiano Just purchased regeared Diffs and adding harrop e lockers in both front and rear. this experience definitely makes me very hesitant and nervous about my decision. this exact failure is my greatest fear for adding a locker and putting me and my family in danger.
@@HarropTV I am interested, with the question asked about the bog hole i could be in a situation where i am trying to climb a steep muddy track, if i dont get it first go i may have to back up and have another go at it, my concern is I could be in a situation where i have to give my troopy beans straight off the bat to get moving up the steep hill. Will this 6 inch of play at full beans cause this locker to potentially fail? Or are they tested for these situations? This is a serious question from someone looking to buy 2 of them. Kind regards.
What’s the misconception on social media? It takes 6 inches (depending on tire size) to re-activate the locker when shifting directions... Then 6 inches to re-engage going forwards again. If you’re just driving through a bog hole it wont make a difference as you point out, but if you are ramped on a steep rockey steep hill and trying to launch over an obstacle its a royal pain, and its very noticeable. Dont think there are any ‘misconceptions’. Just well informed 4WDers that have used the products and know their limitations.
i think on social media someone was mention half wheel turn.. not 6inches.. 6inches is almost nothing compare to half wheel turn. given half wheel turn can be almost 50inches for 33inch tyres.
hm it is enough to stuff up a drive in certain circumstances as you can see here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1nYZo--7Xh4.html , the 6 inch is for what Tyre size? We see far more then 15cm rotation needed to disengage and re-engage on 35" in most situations we encountered where this is an issue the front wheels up a decent rock step and a few forward and backward movements to re-align are required. The bind does not keep lockers engaged in my experience the traction is not there second it is required.
AllOffroad 4x4 Adventures TV is correct. Its a lot more than 6 inches and closer to half a turn if not more. The other issue i have seen on trucks that play hard is the load plate next to the magnet gets indented by the locking pins to a point where they no longer slide and can no longer disengage or re-engage depending on where the damage has occured.
From what I gather that half a tire turn is coming from the OLD Eaton ball bearing design, not the latest pin design. You can see from forward to reverse the diff barely moves, the old ball bearings would turn the diff quite a bit.
yep, pro and cons to all types thou, installation plays a large part for any air locks, its not the locking mechanism that's the issue, its the engagement process that can make them useless .
It’s funny how this basically just makes it clear that no one has any misconception about how these operate. The flaw is the fact that they unlock when you change direction. Air lockers or automatic lockers don’t have this problem
@@darrengray2309 for the ARB and especially sure, especially if you do a shit job of installing it and securing the air hose in a protected place. last time I checked mechanical lockers don't have air leaks. And at least the ARB works how a locker is supposed to work once you set it up correctly. The Eaton is great until you get stuck and need to reverse and then you have no locker. That kind of defeats the purpose of having a locker right? Seeing how it doesn't work when you need it to work the most. The eaton has been around for quite some time now and yet it still hasn't really caught on. I wonder why?
@@Raevenswood They just showed that it locks again in reverse. It locks in both directions. Yes it does unlock for a few inches, but then locks again. I don't really see this as an issue; other than the fact that you are locking and unlocking all the time--- so it could wear the parts sooner, possibly. But it still locks in reverse
So this REALLY begs the question, why doesn't the electromagnet just engage/disengage the locking plate, or the pins directly? Is a mechanical, space or patent infringement issue? It sure seems a more practical action that wouldn't have the fw/rr disengagement issue.
Damnit. I wanted one of these. However the unlock and relock behavior solidified my decision to not buy one. On the plus side, the coin I save I'll spend on onboard air. I drive stick so sometimes I'll roll backwards before going forward
I want one in my Foton Tunland. But sadly I will be told it can’t be done. Apparently the Tunland is supposed to have Dana 44 rear and Dana 35 front. No one can say for sure. Surely an existing version can be adapted.
Why does it unlock when changing directions?! I wasn't even looking for this diff but that seems like a huge problem. If your trying to shoot up a rock step and you put it in reverse to get a 6-12 inch run up to bump up over and then both front and rear are unlocked. Then they lock mid bounce when the tires have 20 times the traction it's just asking to break the weakest link, be it your CVs, U joints, and or axle shafts. Looking at this from and engineering standpoint it's ludacris, the amount of shock load created is immense almost like dumping the clutch.
Movement at the centre of the axle is relates to a lot more at the tyre, seeing the movement from the diff centre in this video I can't see it being much more then 6 inches
Great demonstration. Someone needs to make a rear E- Locker for the Ram HD (Cummins or whatever AAM 11.5). Harrop/Eaton, AAM, Yukon, TJM, or someone needs to step up and make this. It's so overdue. Yes ARB is available but it's not practical. Not to mention the seals that wear out and need to be replaced whether you're using them or not. ARB is good and strong but a flawed design in the actuator, and too much to fiddle with and go wrong. I hope the industry sees what a potential gold mine this is and moves on it soon. I should mention that the Power Wagon rear E-locker is available through Mopar (Only one available for AAM 11.5) and comes in well over $3,000 U.S. for just the carrier assembly. Screw you too Mopar...
@@HardstylePete yes...but....I went through three air lockers (under warranty) over four years because the bonded seals craped out and also oil migrated up into the compressor. Getting them to engage was also more miss than hit when they were working.
How is this design any better then a Torsen diffential? I love me front Torsen diff. Is this what is in the rear of the Ford FX-4? It seems to have a few inches of play.
Is this the same as the most recent eaton design (elocker4)? I was looking on the eaton website and the video they show has the magnet and the locker plate on the same side of the of the diff, and it looks like the magnet pushes the locking plate directly into the side of one spider gear, such that i would assume it would not need to diff to rotate to engage. They claim a 0.14s engagement time, and to have an actual time i would assume the motion of the vehicle would not be a factor
no, as far as I know the Elocker4 is only for the Dana 60 and 70 unfortunately. they should make the same design available for all other diffs and the issues are solved
@@AlloffroadAu I was looking on Eatons website last night and it appears that they make the Elocker4 for most Toyota applications now, as well as some other Dana axles.
@@AlloffroadAu I've tried replying with links multiple times and the comment just disappears; try googling Eaton 14212-1 and the eaton elocker4 page should be pretty high in the results. (14212-1 is the model number for a 9.5 inch 30 spline used in most older Land Cruisers)
@@wormfood868 that is not the direct engaging e-locker 4 that is the standard e-locker with all the issues. Google Eaton ELocker4 and you will get to the actually e-locker 4 page.
G'day I've purchased front/back Harrop lockers for my VDJ76 last Dec 2017. The dealer had 2 remaining from a stock he had for a while but not sure since when. How would I be able to know if the Hroop I've got are the 4 pinion locker or the 2 pinion locker? is there a way to know while they are in the car, say from how far the wheel rotate free from forward motion to reverse motion?. Or if it helps, do you have a date when Harrop upgraded their lockers to 4 pinion? Part number? Id appreciate your help as im planning a long trip soon and id like to know what is been installed in my diffs. Many thanks
@@HarropTV I’m reading through these comments and to be honest I’m pissed to keep reading ‘contact customer support on bla, bla, bla’. I want to be able to read your replies to these questions now, without me having to ring customer support. Why can’t you just answer the questions here in the comments section?
Be nice to finally get mine already after 2 months and counting, still getting told I'm on a list due to the back log with out a time frame while these guys are happy to pull e lockers out of there ass for influencers on short notice while the rest of us have to still wait,
3:25 if you watch the crank arm you can clearly see in between engaging to the front and engaging to the rear there is a significant 6 in gap before it engages that is what people dont like the tech sucks fix it we want no slop
I have just installed a lunchbox locker and noticed so many people are against it. Looking at this comments looks like this e-locker isn't much better.
The disengagement while reversing is a bad idea. Most people will throw it in reverse and gun the throttle, if they are stuck. Which will cause this until to probably explode.
We installed one of these into a Wrangler that never worked properly from new. Subpar design and terrible customer support , would never recommend or purchase again! Since fitted 2 TJM Pro Lockers , much better design and stays locked and any true 4wheeler carries an air compressor so I don’t think that extra cost is a consideration when investing in quality traction control. Very disappointing
Hence why I’m just getting the Eaton unit. Much better customer support and well known where as Harrop is much smaller and has the customer support of a wet noodle.
Wheel circumference is not dependant on tyre pressure. Circumference is constant even if your tyre is dead flat. Radius will vary, this has no effect on wheel speed. Surprising that they would get this wrong.
HarropTV wrong. When the radius changes it stops being a circle so the formula is not valid. Go back to geometry class! The length of the tread of the tyre is fixed. Changing the circumference would mean adding or removing part of the tread. Impossible!
What a garbage design fault. And yet still you try and justify it with a demo which managed to confirm that they disengage momentarily. TJM or ARB all the way
