In the 80's it was sold as a Gov-Lok for a while named Command-Traxx and is available in some Chevy trucks as G80 option. Locking vs Torque Vectoring Differentials. Even though nominally both front and rear gears sets are the same, (ie: 3:55) the front differential is a slight bit more aggressive than the rear. (N70 FITMENT GUIDE). By locking a front or rear differential it allows the axle to turn both wheels simultaneously at the same speed irrespective of traction differences. How does the electronic locking rear differential work when, Mine has always been good to me, it only works when you’re driving below 20 mph though. The purpose of differentials is to allow the wheels of the vehicle to rotate at varying speeds. Here we strive to provide the most accurate, up-to-date, information about the functionality, common faults and latest technology built into most 4 Wheel Drives. Use your differential lockers wisely to protect your vehicle, the off-road track as well as the environment. Basically, when you go to make a turn, the inner drive wheel is going to rotate slower than the outer drive wheel of the gear train. The most common Limited Slip Diff technology is clutch-pack based or pre-load spring based. That’s because it’s a differential lock that works across two wheels on an axle. It's almost like a spool when engaged, love it. Biggest Tire on a Stock Tundra - No Lift (FITMENT GUIDE), Can You Fit 33" On A Hilux? Open diffs tend to send the power to the wheel that is slipping, so one wheel spins, and you go nowhere. Every vehicle has two differentials, a front one and a rear one. Driving uphill on an uneven track with open diffs requires quite a bit of momentum if you hope to succeed and the risk of damaging your vehicle is increased substantially. Most vehicles allow you to switch this function off as it can hinder the forward progression quite a bit, especially in sand. Open diff or electronic lock under 20 mph is the only 2 choices from Ford , get the locker option . Although smoother than other competitive locking differentials, the brute force characteristics of the POWERTRAX LOCK-RIGHT Locker limit general application in less tolerant and more mainstream applications. Same can be said about the front and rear differentials. ABLS (active brake limited slip) is not a locking diff in any way. I had a limited slip in my old F350 diesel and the e-locker on my 17 F250 is night and day different, for the better. Usually, they are open differentials and you need to manually close the rear or front diffs by flipping a switch and engaging an electronic differentials locker to close it. Traction Control (TC) functions similarly to a differential locker accept it activates automatically once the vehicle senses the loss of traction. Do you get the idea? When in 4 lock those front tires need to slip a bit to keep from bindng up. If you’ve ever driven off-road with a 4×4 that has a locking rear differential you will be able to relate to how easy it makes a vehicle overcome most obstacles. I'd assume yes. for trucks with 4x4, as soon as you start pushing snow, when one rear wheel spins 3 cycles it automatically locks the diff so that both rear wheels have power at the same time. It’s excellent for wheeling. You also risk damaging the off-road track and making the conditions worse for the vehicle coming through after you. Once you are moving, the locking diff becomes dangerous, when cornering, it will try to spin both wheels at the same rate. Those driving conditions would be a perfect time to engage 4H, splitting the power between the front and rear driveshafts. The wheels are allowed to turn at different speeds like when taking corners but will lock up when driving in a straight line and the clutch pack or metal plates detects it is in a high-torque situation. These are common in four-wheel drive (4WD) vehicles. The wheels on ice will spin, the other wheels won't rotate at all. Think, track and field athletes running around an oval track with the runners starting off in the same line. JavaScript is disabled. A manual differential lock means the differential is open by default. That is when you know, your adventure has officially begun. First, a diff lock should not be engaged for on road driving, unless weather conditions such as snow or ice mean that extra traction is required. Your locking differentials are there to prevent you from getting stuck in the first place by overcoming the off-road limitation of an open differential in challenging driving conditions or cross-axle terrain. The main problem with driving on snowy and icy roads is the traction difficulty. I want a rear locker for deep snow situations. eval(ez_write_tag([[728,90],'4wheeldriveguide_com-medrectangle-3','ezslot_3',131,'0','0']));If you would like to know more about how a locking differential works and when it is appropriate to use, continue reading…. I know this is an older thread, but if you have the option, get the locker. Locking Differential Cons The biggest setback to locking differentials is the high level of wear and tear that your tire treads will experience. Thick muddy conditions is also a perfect opportunity to engage rear or center diff lockers. In this situation, you also want to avoid getting bogged down before you call on your locker to rescue you. If not enough momentum is used, you could find yourself stranded with your wheels spinning in the air. Driving in 4wd will scrub the hell out of those tires and maybe worse if the pressure on the driveline is not released. Or does it work like a limited slip differential where traction is split between both rear wheels (within reason of course)? Whether it be snow, sand, mud, ice, etc… the LOCK-RIGHT will give you the traction you need. ! When the nor'easter/Winter Storm Grayson rolled through in early January 2018, I had to give the rear diff locker and ATRAC a test run. A locking differential or “lockers” as they are commonly referred to in off-road circles, essentially locks an open differential, may it be the center, front or rear diffs, and forces both axles to operate as one unit and turn at the exact same speed irrelevant of the traction or lack thereof. If nothing more, if the cost is … The 4WheelDriveGuide domain is an affiliate program participant with Amazon and some other sites. Rear locker engaged driving downhill also decreases your chances of slipping as traction is increased across the rear axles. The locking differential limits the two wheels on an axle to rotate at the same speed. Use your locking differential when you want to go off road, for driving on difficult terrain, such as dirt, gravel, mud or snow. Once you manually engage the 4H mode then you close the center differential and power is split evenly across the 2 driveshafts. It works well because a computer controls the the transfer clutch and applies brakes on spinning wheels. Now here is a twist to the locking differential story: When Chevy advertises its trucks with an optional rear locking differential - it indeed is a differential that locks up (automatically). This closes the rear or front axles and makes them operate as one unit and not independently as before. eval(ez_write_tag([[728,90],'4wheeldriveguide_com-medrectangle-4','ezslot_2',115,'0','0'])); A locking differential is like a magic button that gives a vehicle a major advantage over an open diff especially under challenging driving conditions like rock crawling or deep loose ruts. Even though nominally both front and rear gears sets are the same, (ie: 3:55) the front differential is a slight bit more aggressive than the rear. This means you will almost always be in 2H when driving on tarmac. Remember when fitting aftermarket rims with bigger tires your main concern should be the wheel offset and the tire width, since diameter doesn’t affect the fitment. This option turns your axle into a solid-state shaft, by locking the differential. The following question will soon be academic with traction control becoming more and more commonplace, but: How much would a locking differential help a 2wd vehicle that’s stuck in the mud or snow? Automatic locking diff is also known as an LSD or Limited Slip Diff. Whether it be snow, sand, mud, ice, etc… the LOCK-RIGHT will give you the traction you need. it's limited slip, with help from abs. When we refer traffic and it results in business sales as a result of it, we are compensated by these companies. This forces both wheels to turn in unison, regardless of the traction (or lack thereof) available to either wheel individually. Getting stuck in deep water, you risk all sorts of expensive electrical damage. And whether it is winter snow, spring mud or the weed-covered boat ramps of summer, an automatic locking rear axle can help keep Chevy trucks moving ahead … I've read so much online at this point I'm upside down. Most conventional 4×4 vehicles have 2H, 4H, and 4Lo gearbox options. I would go for a solenoid operated by a momentary switch you have to hold down. This single drive-train component can mean the difference between a good off-road 4×4 vehicle and an excellent one. I could get around in our unusually deep snow today but got stuck in 2.5 feet of virgin snow on a colasack. A 4x4 will outperform a 4x2 with a locker, and you should never lock the differential in slippery conditions because it will make the car fish tail rather than turn. While you could get away with using a limited-slip differential on mildly snowy and icy roads, you may need a locking differential if the conditions are severe. Plus enabling only when the vehicle is stopped. It sounds good in theory, however, it is not as effective as a differentials locker or even a modern TC system. It functions similar to a manual mechanical differentials locker but not quite the same as there is still a small amount of traction lost first and wheel spinning necessary before the TC is automatically activated. All automobiles on the road contain devices between the wheels called differentials, or gear trains. This is done by splitting the torque of the engine into two separate outputs. Those driving conditions would be a perfect time to engage 4H, splitting the power between the front and rear driveshafts. Unlike an open differential that allows both wheels to turn at different speeds especially when cornering, the diff locker forces the axles to rotate at the same speed and is only designed to be engaged once traction is limited or almost lost. How does the electronic locking rear differential work when NOT LOCKED? DO NOT ever engage a locker on the open road especially on bitumen (Tarmac) and if used incorrectly can cause major damage to expensive drive-train components.Torque is always transferred to the wheels with the least resistance. (N70 FITMENT GUIDE). And to answer the OP's question, a rear-locking diff is better than four wheel drive (4WD) for the reason explained above because some 4WDs have two open diffs. A locking diff will send power to both wheels equally and help you get started on slippery surfaces. Get a 4x4, chain control is the biggest reason I feel in your area. when ABLS engages it does not lock the diff at all, it merely brakes the spinning wheel so that the diff will be forced (by nature of an open diff) to then transfer most power to the other wheel. Just 1 , you do have the option of 373 or 430 gears with the 6.2 gas engine . This means the site earns advertising fees through Amazon. A Locking differential is an amazing piece of engineering if used correctly. Then rear differential lockers are engaged when you want to overcome an off-road obstacle slowly without any damage. eval(ez_write_tag([[336,280],'4wheeldriveguide_com-banner-1','ezslot_5',117,'0','0'])); Lock the center diff when the surface you are driving on gets slippery, like gravel roads or when there is ice or snow on the tarmac. eval(ez_write_tag([[336,280],'4wheeldriveguide_com-box-4','ezslot_4',116,'0','0'])); Open diff vehicles like the older Land Rover Defenders, Suzuki Jimny and many others without any TC (Traction Control) aids will need more momentum and struggle a bit in cross-axle off-roading conditions.Off-road Example:If one wheel is in mud/sand/snow and the other is on the tarmac with good traction, the torque will always be transferred to the wheel with the least resistance i.e the wheel with the least traction. The same applies for the front drive system. The locking differential is stronger, but you have to actively engage it, which means it's better for situations where you know that you'll need it … The electronic locking differential can provide additional traction should your vehicle become stuck. A locking differential is designed to overcome the chief limitation of a standard open differential by essentially "locking" both wheels on an axle together as if on a common shaft. This domain, 4WheelDriveGiude.com, currently participates in the Amazon Services LLC Associates Program. This is the simplest and least sophisticated mechanical system possible. G-Class Differential Buttons. A vehicle without a rear locking differential could possibly still overcome a difficult obstacle, it just means you will need to use more momentum to get your axles over the obstacle. Differentials work by transferring the resistance to the least resistance tire. A locking center diff improves grip in all surface conditions when traction is poor. Yes, it's only good for under 20mph, but it works, VERY well. You must log in or register to reply here. The LSD works by allowing a small amount of wheel spin and then automatically engages the LSD (Limited Slip Diff) eval(ez_write_tag([[336,280],'4wheeldriveguide_com-large-leaderboard-2','ezslot_11',118,'0','0'])); LSD works by limiting the independence between right and left axles. Just be careful to know that a cross-axle locker is different to a centre diff lock, even though the concept is … This diminishes the good traction that you once had. Simply put, because the look good and you can! For any questions or queries, you can reach me directly at: info@4wheeldriveguide.com, The most commonly asked question amongst truck owners and the 4WD community is, what is the largest/biggest tires size you can fit on your truck? When locked, the center diff causes the front and rear propshafts to rotate in unison, increasing grip. In contrast, my '91 Audi Quattro had an open front diff, a Torsen center diff and a lockable rear diff. And to answer the OP's question, a rear-locking diff is better than four wheel drive (4WD) for the reason explained above because some 4WDs have two open diffs. This gives you improved handling and traction. One way to make these machines perform and look even better is by doing a big tire upgrade! no where in the acronym does it say "locking". Yes, whenever you venture off the tarmac it is time to engage that center diff locker. You would be able to get out of this situation if you had a locking diff since you could lock the diffs and send power to both wheels at the same time. An LSD can never compete or make a vehicle as capable as one with a rear Diff locker. The torque coming from the drive shaft then forces the diff closed. It is not recommended to drive the vehicle with the differentials locked on pavement due to … !eval(ez_write_tag([[300,250],'4wheeldriveguide_com-leader-1','ezslot_12',136,'0','0'])); 4-Wheel drives and off-road driving techniques has been my passion for over 20 years. If you feel the vehicle is struggling, stop the vehicle and immediately engage the lockers and watch it crawl out. If there were no differe… To compensate for the corner, runners are placed in a staggered position to make the race fair. It is also important to remember to unlock them once you get out of your jam because it is only meant for speeds below 10 miles per hour to get out of mud or snow. The speed of each output will be different in order to accommodate the necessary rotation speed. but following me around on a forum is a new level of weird. Differential lockers are used to overcome a limitation of an open differential in off-road conditions by locking the center, front or rear differential to distribute power and torque evenly to both sides of the diff. Do not wait until you are completely bogged down to the axles before you engage the rear locker. To find out, read further…. How does electronic locking differential work? When in 4 lock those front tires need to slip a bit to keep from bindng up. If you’re driving primarily in snow, it’s helpful but you don’t want to lock it in all the time, as it can grab in snow when you don’t exactly want it to. Always plow with 4x4!! So how do you […], link to Biggest Tire on a Stock Tundra - No Lift (FITMENT GUIDE), link to Can You Fit 33" On A Hilux? I'd like to get into off roading, but even that will at best be only a few days per year. . Use your locking differential when you want to go off road, for driving on difficult terrain, such as dirt, gravel, mud or snow. For a better experience, please enable JavaScript in your browser before proceeding. These machines have built up a reputation for reliability, durability and capability. It is not recommended to drive the vehicle with the differentials locked on pavement due to … I just want to know the difference between locking and non locking differensials in deep snow. Snow and icy conditions create rough roads to drive on. So what is the […], Why would you want to fit 33 inch tires on a Hilux? Plus enabling only when the vehicle is stopped. The locking of the rear differential should only be engaged during low-speed, extreme off-road situations where one wheel is likely to not be in contact with the ground. 2H mode allows better fuel consumption and more even tire wear. But what is a locking differential used for and when does one engage the locker? While a differential usually allows each rear wheel to rotate at different rates, automatic locking rear differentials "lock" the rear wheels, forcing both to rotate at the same speed. I would go for a solenoid operated by a momentary switch you have to hold down. Also, could not pull a mini van up a complex road as my tires were slipping on the wet snow even in 4x4 low mode. Not all 4×4 vehicles are equipped with a rear diff locker which means you will have to adjust your driving style to compensate for the lack thereof. A locking differential lets the wheels turn at different speeds most of the time, but when its locking function is activated, the wheels both turn at the same speed. Also, when driving uphill on an uneven surface you will definitely want to engage your rear differential locker rather than attempt the track with an open diff. ktmrider, Mar 26, 2011 #2 Runners on the outside lane have to run faster to cover more ground to keep up with the runners on the inside lanes. Driving in 4wd will scrub the hell out of those tires and maybe worse if the pressure on the driveline is not released. They can be added to either the front or rear axle, or even both axles if … The following question will soon be academic with traction control becoming more and more commonplace, but: How much would a locking differential help a 2wd vehicle that’s stuck in the mud or snow? What is the difference between a rear locker and an LSD (Limited Slip Diff) To find the answer to these questions and more read on…. Re: Locking rear differential - Newbie question Feb 16 2019, 8:06pm It's not a true locker that you can jump on and burn both tires, it's a low speed locking system designed to get you unstuck and, IIRC, disengage over 20 mph. Here you only want to engage the rear differential locker because engaging front lockers limits your vehicles turning ability drastically. The locking of the rear differential should only be engaged during low-speed, extreme off-road situations where one wheel is likely to not be in contact with the ground. The rear locker is perfect in conjunction with engine compression braking. This platform is designed to explain common 4-wheel-drive related problems and off-road driving techniques.Happy Wheeling! A center diff locker (4H mode) makes for easier, safer and more controlled driving in sand, mud, gravel, snow. Which I answered and gave my experience with. This gives you improved handling and traction. Locking differentials allow both wheels to travel at the same speed, so when traction is lost for one wheel, both wheels will still keep spinning regardless of the amount of resistance. The program allows this site to link and advertise with Amazon.com. Had to partially dig my self out. An automatic locking rear differential solves the problem presented by the open differential by using a mechanism that locks the rotation of one wheel relative to the other. My 97 AWD Explorer had a center diff with viscous coupling. With a rear differential locker engaged, you have improved control of the vehicle and less momentum is required since both rear wheels are locked as if it where one axle turning at the same speed irrespective if there is traction on either of them or not. Locking Differential vs Limited Slip Diff. Scenario A: unlocked center diff, one axle on moderately grippy surface, other axle on ice. As the treads continue to get worn out, it will become more difficult to steer because the treads won’t be able to grip the road properly. TC works by detecting loss of traction on the wheels via sensors and then automatically applies the brakes only the wheels that have lost traction hereby sending more power and torque to the wheel with the most traction. It is very important to note that locking differentials are only designed to be engaged under very extreme conditions. You can activate the differential electronically and shift it on the fly within the differential operating speed range. A locking differential is designed to overcome the chief limitation of a standard open differential by essentially "locking" both wheels on an axle together as if on a common shaft. First, a diff lock should not be engaged for on road driving, unless weather conditions such as snow or ice mean that extra traction is required. Compared with a standard or open differential, a locking differential (also known as a diff lock, locker, or differential lock) improves traction. Lock the center diff when the surface you are driving on gets slippery, like gravel roads or when there is ice or snow on the tarmac. Exactly the same concept applies to the relative rotation of the front axle to the rear, and that’s called a “centre differential”. A locking differential is designed to overcome the chief limitation of a standard open differential by essentially "locking" both wheels on an axle together as if on a common shaft while still allowing them to rotate at different speeds when it is required (such as when negotiating a turn). The basic difference is that the limited slip axles are always ready to go when you need them, which makes them better for icy roads. Torque is always transferred to the wheels with the least resistance. Happy 4 Wheeling and remember, Safety First!! When To Use Rear Diff Lock Does it work like an open differential where one wheel gets all the power? Just curious, NYH1. I've been in some hairy situations where I was glad to have the option on my current F150. So you really want to get in and out of deep water as quickly as possible. This is accomplished by locking the differential to distribute power and torque evenly to both sides of the diff. When making turns the outer wheel of the turn always turns faster than the wheel on the inside. You will have near perfect control of the vehicle. Is locking rear differential something I should want? When the differential locks, an equal amount of force is transferred between both tires. It also hinders the vehicles capability in certain off-road conditions. The differential is a drivetrain component that is used to transfer power from the engine to the wheels. Just lock the rear diff, mash the accelerator and keep the wheels spinning to get through exceptionally snowy road sections. Conventional 4×4 vehicles have 2H, 4H, splitting the power to the wheels with 6.2! Evenly to both wheels equally and help you get started on slippery surfaces wo n't rotate at.! Just want locking rear differential in snow avoid getting bogged down before you call on your locker to rescue you to! Operating speed range i will drive this Bronco in snow more than anything else not! 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