Two wheels are driven in a 2WD drive car and 4 wheels are driven in a 4wd or 4x4. But what you are seeing is the effect of an open differential, which essentially gives all the power to a slipping wheel. What you want for slippery conditions is a limited-slip differential, which helps balance things out in slick conditions. I'll go into a bit more detail. At the driven axle is the Differential. What this is, is a set of gears that allow each driven wheel to rotate at different speeds. It does this by using the engines output to drive each axle with equal torque. This is a little counter intuitive, and many people think that it works differently, but this is how it works; an open diff provides EQUAL torque to both wheels. but because the torque is equal, if one wheel sees less force against it than the other, it can rotate faster. This is so that, around corners, the outer wheel can go faster than the inner wheel. The problem is that, in very low traction conditions, one of the wheels may have so little grip that the engine cannot provide much torque, it simply rises in rpm's and spins that wheel, while building so little torque doing so that the other wheel does not move at all; and the car is stuck, as well as appearing to be 1 wheel drive; however, both wheels are receiving equal torque. A limited slip differential does what it says on the tin; it limits the difference in speed between each side, so that the side that does have grip and can move the car can receive proportionately greater torque. These diffs have performance benefits in sports cars too, and are generally seen there, as well as in high-performance AWD systems, such as Audi's Quattro, and Subaru's system. A locking diff, as you can probably guess, can lock the two halfs together completely, forcing them to rotate at the same speed regardless of traction on one wheel or the other. Usually seen on true off-road vehicles and 4x4's. An autolocker is similar to a locked diff, except it has a sort of ratchet mechanism that allows one side to advance ahead of the other. In an autolocker, the two halfs cannot rotate slower than the speed dictated by the input shaft, but a half can rotate faster, so it can still go around corners. Used in 4x4's as an alternative to lockers, but are less nice on the road. A spool is just a bevel gear in place of a diff, it acts like a locked diff that cannot unlock. Useless and possibly damaging on road use, for off-road use only. Also seen on some racecars. The legendary Porsche 962C used a spool. A welded diff is the poor mans spool, a formerly open diff that has been turned into a spool by welding certain bits together.
@Jason-Samko
Жыл бұрын
Well said. Same exact results and backs up everything I said for all practical purposes. But appreciate the great detail and information as well as the time it took to write it all out. Thank you.
@cdf8821
Жыл бұрын
Loved this detail. I learned a lot from your explanation. Thanks!!
@mikem4432
Жыл бұрын
I think the trucks without the locker still are able to get by if the compluter applies the brake to the slipping wheel, and the non slipping wheel gets half the power.. so in effect it is doing the same job as the locked differential, just differently. now if the power is being evenly distributed and all your tires are slipping, well, your screwed, locker or no locker.
@Jason-Samko
Жыл бұрын
The algorithm controlled brake locking diffs are a great thing. Much better than a standard open diff. Now a true locker electronic or air is the real winner because it doesn't require any wheel slip or tire spin to activate. That's a huge factor in snow, mud, sand, etc. That's also the reason the gm g80 auto locker bums so many people out. It requires to much wheel spin to activate and the holes already dug by the time it kicks in. But you are 100% that a algorithm controlled traction system is a huge win compared to all open or even to a g80. I wish the new trail boss came with a a electronic locker rather than the g80. Only reason I'm planning to buy a Colorado zr2 is because I need the true lockers here in the swamps.
@kevinbreese5739
Жыл бұрын
The title, the way you have your chart, and the way you explained this will be misleading for many noobs. Fact is 2WD = 2WD = 2 wheels are receiving power and 4WD = 4WD = all 4 wheels are receiving power. That ONLY changes IF you are stuck or spinning, or hard cornering, in basic differential systems. You are going to lead noobs to think that only 1 wheel is being powered in their 2WD cars etc. And as you touched upon, many vehicles have LSD or Posi, locking diffs, or advanced AWD systems that send the power where it needs to go. But generally speaking when driving a car under normal conditions 2WD = 2WD and 4WD = 4WD. There is, after all, a reason they DON'T call a 2WD a 1WD or a 4WD a 2WD ;)
@Jason-Samko
Жыл бұрын
It's not misleading when look at the thumbnail I used. I didn't show a truck going down the road. And most people want 4 wheel drive for slippery conditions. In those conditions everything I say is 100% true. And I talked about lockers and lsd etc. Things that most vehicles still don't come with especially trucks and suvs.
@MrDrProfessorVader
4 ай бұрын
It’s not really misleading when you consider that many things are expressed in terms of performance in worst case scenario, which is where the actual “rubber meets the road” so to speak (pun intended). In the worst case scenario, indeed a traditional 4x4 acts like a 2x4 in terms of wheels receiving usable power.
@einarbk885
5 ай бұрын
my 1991 quattro was better than this, without the need of any electronics.
@krpotter57
10 ай бұрын
Informative video. I have tried to explain this to people many times. Excellent job!
@Jason-Samko
10 ай бұрын
Thank you. Glad you enjoyed it
@DOC187able
Жыл бұрын
I have a rear Locker on my 2023 Tacoma Trail Edition I love the truck creeps through anyting
@Jason-Samko
Жыл бұрын
Basically same truck I have too. Love it
@tonyrhoton6613
2 ай бұрын
Anything
@fritty9927
Жыл бұрын
My old 93 Land Cruiser had a center, front , and rear locker and I really never quite understood it for a while. It was a rare bird.
@Jason-Samko
Жыл бұрын
Yep they were amazing
@wutang80oc39
9 ай бұрын
Open diffs, basically sends equal torque to both wheels if both wheels have the same amount of traction. When miss matched the max torque that can go to the wheel with traction is equal to the max torque to wheel without traction with out spinning ex: if you got 1 wheel in the air the max torque that can be sent to it with out it spinning is 0ft lbs so 0ft lbs gets sent to the wheel on the ground. AWD cars also have a open center differential, and if it doesn't have a lock button for the center diff like some AWD cars have, the engine will also only be able to send the amount of torque that the axle with least traction has before slipping to both axles. Some traction control systems will apply brakes to the wheel with least traction which increases the amount of torque to slip that wheel while sending the equal amount of torque sent to the opposite wheel ex: the wheel in the air has brake applied increases the max torque with out slipping to 40 ft lbs, then 40 ft lbs will be sent to the opposite wheel which may not be enough for forward progress so the vehicle will just lurch forward, which is why it doesnt work as well as a mechanical locker.
@Jason-Samko
9 ай бұрын
Very well said and 100% spot on.
@justsomeguy--
Жыл бұрын
Good for you on showing these young people how this works. Most just pay the money and get upset and think its broke
@Jason-Samko
Жыл бұрын
Agree 100% so many people I see stuck in the woods expected the wheels on the high edge of the hole to get them out. Literally heard that a dozen times as I pull them out. They all say "it's 4x4 I figured as long as I kept 2 side wheels high and dry I'd be ok".
@justsomeguy--
Жыл бұрын
@@Jason-Samko next one should be the tools and recovery gear needed before going out. Spend it once and have fun instead of waiting for someone to pull you out and being pissed when they charge an astronomical amount. Thanks again
@Jason-Samko
Жыл бұрын
@@justsomeguy-- already have a video on that called how to not get your vehicle stuck. Very few people watched it. Made in a couple months ago
@armedprophet3321
Жыл бұрын
And that is another reason I have a Super Duty Tremor !
@Jason-Samko
Жыл бұрын
Beautiful truck
@ChrisDavis-ve8ej
5 ай бұрын
Never knew this. Thank you!
@Jason-Samko
5 ай бұрын
Glad you enjoyed it
@RM-bx2zt
Жыл бұрын
I hate when i experience this. I knew why and it was not a help. 4 wheels on ice with BFG ATs. Went to studded snows in winter. 😀👍
@Jason-Samko
Жыл бұрын
Yep I think a rear locker and some sort of computer controlled limited slip in the front should be mandatory on all 4x4 trucks
@RM-bx2zt
Жыл бұрын
It would make more sense than leaving people who spent $80,000 on a 4WD stuck.
@Jason-Samko
Жыл бұрын
@@RM-bx2zt yep should be mandatory on all trucks but especially on the expensive ones! Just got done making a video about how 100k truck prices are getting out of hand and the stupidity of how little get get for that kind of money
@tomkelly3896
Жыл бұрын
You just found this out....welcome to the 60s......your just comin out of the stone age🤠😎🤓
@Jason-Samko
Жыл бұрын
im 50 years old. Iven know it for decades. but now that I have a channel with a voice I wanted to share and help people.
@carolinawoods-n-water4392
Жыл бұрын
I’m new to the 4 wheel drive world - really appreciate you taking the time to explain this. Great info for newbies!
@Jason-Samko
Жыл бұрын
Glad you enjoyed it. any questions just ask anytime.
@eloyrodriguez6980
Жыл бұрын
Two wheels are driven in a 2WD drive car. But what you are seeing is the effect of an open differential, which essentially gives all the power to a slipping wheel. What you want for slippery conditions is a limited-slip differential, which helps balance things out in slick conditions.
@eloyrodriguez6980
Жыл бұрын
kzitem.info/news/bejne/2o933WtvbGpnin4 that’s a detail information on how a differential works. When the diferencial is open you can see that if a tire it’s stuck or slower the other tire would spin at a faster rate because the differential is open but both of the tires are getting power the engine is powering sending the power through the drive shaft to the differential and from the differential depending on if it’s locked open or whatever that’s how it will turn the tires
@Jason-Samko
Жыл бұрын
Eloy Rodríguez yep but if one tire slips and spins the other side tire is dead in the water. Proven on a hundred slip test videos unless there is lsd or an lsd algorithm.
@BillsAutoService
Жыл бұрын
Thats why the GM g80 is the desired diff. Just go to any wrecking yard, they are hard to find.
@Jason-Samko
Жыл бұрын
g80 is a great option. but not good in snow mud or sand or rocks or really anywhere that requires slow movement to get out becuase the g80 requires the working wheel to hit 100 rpm before the g80 engages and when it engages its hard and jerky. but much better than not having it. A true locker is best if you can get one.
@BillsAutoService
Жыл бұрын
@SamkoWorkShop i agree. I was more talking about factory options without spending big money 💰. I have an '81 k20 with a G80. Seems like the older ones work better than the newer ones. Just guessing based my limit experience.
@Jason-Samko
Жыл бұрын
Craig Marsh I bet it does work better back then and I'm guessing it engaged faster. They probably slowed it down to prevent lawsuits if it engaged to quick on slippery roads etc.
@festol1
Жыл бұрын
The center differential does the same "compensation" between axles?
@Jason-Samko
Жыл бұрын
correct. 50% front and 50% rear. but doesn't change the wheel spin with one in back and one in front doing all the work until you active front and rear lockers or have a algorithm of lsd.
@festol1
Жыл бұрын
@@Jason-Samko Thank you sir! :)
@Johnrap
8 ай бұрын
Thanks for this. And let me just mention for the indexing and recommendation engines at KZitem that I highly recommend this video to anyone that needs or wants to understand how 4 wheel drive and 4x4 work.
@Jason-Samko
8 ай бұрын
Thank you. Greatly appreciated
@jamesrose9088
Жыл бұрын
Kia AWD, but its not. The ONLY tIme the rear is involved, is when the front slips. Thats NOT AWD, thats part time AWD. Now to be honest, I live in Ice and Snow country. It has legitimately taken my stupid ass everywhere I have ever pointed it and never gotten stuck.
@Jason-Samko
Жыл бұрын
Front wheel drive always does better than rear wheel drive because the weight of the motor sits over the front wheels adding weight for traction.
@Craiglife777
Жыл бұрын
My Toyota TRD pro will lock everything, front and rear.....so does my '94 chevy off road addition if you have it in 4WD and in low gear, or if the transfer case is in low.
@Jason-Samko
Жыл бұрын
The tacoma only has a rear locker but the computer does have a brake locking front algorithm that helps it alot.
@dr.a006
7 ай бұрын
In Utah, there is a very steep road to Powder Mountain ski resort where my brothers and I grew up skiing. If you figured out how to use your little front wheel drive car, you could pass people with 4WD on a steep snowy road. 😂
@Jason-Samko
7 ай бұрын
Front wheel drive always does great in the snow with all the weight of the motor over the drive wheels and pulling rather than pushing.
@Barchenhund
4 ай бұрын
Am I wrong ? Is your first illustration of a rear differential a limited slip/positraction whatever manufacturer referred to it as.
@Jason-Samko
4 ай бұрын
That illustration was showing open diffs and how the wheels can spin at different speeds.
@MrDrProfessorVader
4 ай бұрын
Excellent video, just wanted to mention that you missed the Mercedes’ G class also offers front and rear locker (along with center of course).
@Jason-Samko
4 ай бұрын
You are correct. I never even thought of the g. But probably because I could never dream of affording one😂 but the g wagon is an amazing offroader
@nyajntxawgyang5250
6 ай бұрын
Hello SamkoWorks how to find it out if my 2023 Toyota 4Runner have both front and rear locker ? Thanks
@Jason-Samko
6 ай бұрын
No 4 runners have front lockers. Actually no stock toyota has front lockers in any of their vehicles. But if you have a trd off road or trd pro model you have the rear locker and mts and crawl control. If you have any other trim level you have atrac only but atrac is still amazing at getting you unstuck. I just made a video about atrac and mts if you check my toyota play list.
@MountainGanesh
Жыл бұрын
FYI it's "misled".
@Jason-Samko
Жыл бұрын
Yep I suck at spelling
@Actheman1978
Жыл бұрын
This is an absolutely terrific explanation. Wow this was good!
@Jason-Samko
Жыл бұрын
Thank you. Greatly appreciated and glad you enjoyed it
@brudevold62
Жыл бұрын
Would Front and Rear Trutracs apply power to all 4 wheels? I l know in a rock crawling situation its real ineffective, but for most offroad trails and overlanding would dual LSDs apply power to all 4 wheels?
@Jason-Samko
Жыл бұрын
not familiar with trutracs system but yes front and rear lsd would help tremendously.
@appleztooranges
Жыл бұрын
Should I buy the 2023 Tacoma trd off road? Over the 2024 Tacomas?
@Jason-Samko
Жыл бұрын
I would buy a 23. It's proven and rock solid. Toyotas track record for first few years of a new vehicle are not that great. It's a problem all manufacturers have and toyora is no different. I'd personally prefer a 23 over a new 24.
@appleztooranges
Жыл бұрын
@@Jason-Samko now woikd you buy the trd off road for $42k at my dealership or $53k trd pro? Is it worth the extra $10k spent for the pro with the decals, heated seats, moon roof, rims, bumper, skid plate, fox shocks etc? In your opinion?
@Jason-Samko
Жыл бұрын
@appleztooranges in my opinion the trd off road is the better buy. The bilstein shocks on the off rd are great, and both have exact same capabilities. And since you are keeping it for a while the resell of the pro is canceled out (not that it was a huge difference dollar for dollar).
@appleztooranges
Жыл бұрын
@@Jason-Samko my dealer got two pros in magnetic gray for $53k each. Just wondering. Thanks for the input
@Jason-Samko
Жыл бұрын
@appleztooranges can't go wrong either way. Both are outstanding.
@mariagiordano3902
Жыл бұрын
All the all wheel drive systems have algorithms gm, ford ect.... I had an audi was great in the snow but its a poor mans locker it beats getting out to dig for traction to the wheel thats spinning . Im a truck guy and I wanted a body on frame front and rear locker true 4x4 so I got the zr2, your right there's not many out there , allot of these trucks and SUVs have AWD systems and there great but sometimes you need every tire working together not playing games with the brake calipers sending power everywhere. Even the 24 Tacoma does not have a front locker they cheesed out and give you crawl control thats a way to give you power to every wheel at some point but not every point, and thats why you have to crawl through everything . I found that out years ago when I was a young 4 wheeler before youtube I had to figure it out on my own its like it was a secret back in the day, but most of your snow plows are trucks with lockers and they get serious traction .
@Jason-Samko
Жыл бұрын
The zr2 is the only chevy truck I'd personally buy for my needs as it has front and rear lockers. The g80 is great but not enough for what I need and gm trucks don't have and algorithms u til you get into the upper canyons trims I believe. Love the zr2 and bet you are loving it to!
@protectork9831
Жыл бұрын
Does lexus lx 570 or land cruiser have front lockers
@Jason-Samko
Жыл бұрын
no idea. can not nor will I ever be able to afford either of those.
@jaymopes
8 ай бұрын
So basically all 4x4 truck are a scam unless you have after market parts your truck is useless
@Jason-Samko
8 ай бұрын
Not really as a 4x4 is double the capabilities As a 2wd truck. But the reality of open differentials is a real eye opener when you realize how they work.
@bozartg
Жыл бұрын
Thought I was well versed in this. Thanks for a further explanation. Tremor offers a Front Locker. Option though, not standard.
@Jason-Samko
Жыл бұрын
Yep ford tremor I believe is a torsion locker and not a true full locker. but darn close and a great system that works very good.
@Ranger_k16
Жыл бұрын
Turn off all your nannies and itll be fine
@Jason-Samko
Жыл бұрын
Glad you enjoyed it
@jeremyhanna3852
Жыл бұрын
So the diff has to open what about lunch box lockers or ratchet lockers I have both in my three jeeps or factory posi or sure grip (mopars idea of locker) or torsen diff Mazda's locker some work better than others the point is diffs absolutely don't need to be open Edit let's not leave out jeeps quradtrac they will move with one tire on the ground
@Jason-Samko
Жыл бұрын
I left out lunch box lockers to keep it simple and since most ratchet or lunck box lockers are after market only now. But they do work good but can be dangerous on slippery roads.
@jeremyhanna3852
Жыл бұрын
@samkoworkshop1513 yeah there aftermarket for the most part well except it's what is is in semi truck front tandem axle diffs cause there not power unless u lock the power divider
@preciosolejao9434
2 ай бұрын
Wilys dont have those before. But they are calle 4x4 vehicles
@wlew3499
4 ай бұрын
Thank you Dr. 4wd. Enjoyed it
@Jason-Samko
4 ай бұрын
Welcome. Glad you enjoyed it
@williamlee7782
Жыл бұрын
This is why I have a rubicon. ✌️
@Jason-Samko
Жыл бұрын
Rubicon is amazing with the front and rear lockers
@williamkolesar2790
Жыл бұрын
Great explanation. I have the Sierra AT4X which has front and rear lockers.
@Jason-Samko
Жыл бұрын
Love the at4x line up in full and mid size.
@roberto-gp2dt
Жыл бұрын
very well explained, very good.. Thank You.
@Jason-Samko
Жыл бұрын
Glad you enjoyed it
@qwertylowbubble
3 ай бұрын
Thank you, kind sir. You made it easy to understand.
@Jason-Samko
3 ай бұрын
Glad you enjoyed it
@dougiekavanagh7508
Жыл бұрын
How come you guys didn't drive with front and rear lockers on and stop on the hill like you did on the other 4X4's. Questionable to say the least. Please explain.
@Jason-Samko
Жыл бұрын
2 different trucks. and i was showing a clip from a previous video i made about the limited slip button in 2wd with my tacoma. the video with the zr2 that haad front and rear lockers was not mine. I explained it all in the video. not sure what was questionable about it. I could of got up the the hill in my tacoma even in 2wd with just momentum if i wanted to. but i was making a video and proving a point.
@michaelbefumo-qg7ji
Жыл бұрын
Cause when you have lockers they tend to get wheel hop, axle in rear wants to twist that what traction bars are used for, to prevent the truck from Monday the hop up and down
@seaneastman6323
10 ай бұрын
Me and my friend barried our trucks in the sand and he has front and rear lockers. I turned on atrac and got out,he engaged lockers and barried his truck. So yea js
@CounterT007
5 ай бұрын
That’s a great way of explaining it
@Jason-Samko
5 ай бұрын
Thanks
@okniceguy
Ай бұрын
3:20 Sir, the moment you said an LSD is like a "soft rear locker," where "you almost get a rear locker" I totally began to FINALLY understand what an LSD does. Also, the explanation of differentials (2 wheels on ice, 2 wheels on the road) helped me out so much. You have a no-nonsense way of explaining things, preventing me from yelling "WHY?!" 😅😅 Thanks!
@Jason-Samko
Ай бұрын
Love hearing that! Glad you enjoyed it and found it helpful
@tubqhe
Жыл бұрын
4x4, 4wd, awd... still better than 2wd at a stop light in the snow. You go and they're left spinning especially on an incline
@Jason-Samko
Жыл бұрын
Correct. Cause 2wd is really 1 wheel drive and 4wd is really 2wd in those conditions so you ate actually doubling your traction.
@greenacres53
2 ай бұрын
Thanks for breaking my heart😞
@Jason-Samko
2 ай бұрын
Crazy how 4x4 works in reality
@brosephjoseph9178
9 ай бұрын
Awesome info man! Thank you….
@Jason-Samko
9 ай бұрын
Glad you enjoyed it
@romelbosio5838
Ай бұрын
Nice explanation
@Jason-Samko
Ай бұрын
@@romelbosio5838 glad you enjoyed it
@christianrenteria2792
Жыл бұрын
the tremor f250 and f350 have a front lsd
@Jason-Samko
Жыл бұрын
very true! I left out the HD trucks as they are not really good in the woods due to their size. at least not here in the east where its tight. But you are 100% correct. and the power wagon has front and rear lockers too.
@Jason-Samko
Жыл бұрын
the ford torsion lsd is pretty awesome though and closer to a locker.
@rickjohnson831
Жыл бұрын
I think the dodge power wagon comes with front and rear lockers
@Jason-Samko
Жыл бұрын
It sure does! you are 100% correct
@fabulousoffroaddesigns5080
Жыл бұрын
Yes and Tremor F-150 & Super Duty, and G-wagon, and Ineos Grenadier, for starters. Also Ford offer the Torsen front locking LSD through it's performance catalogue to fit on any of it's F-150's with warranty.
@Jason-Samko
Жыл бұрын
@@fabulousoffroaddesigns5080 yep those are all all top tier vehicles 90% of people can not afford. Shame they dont offer lockers on vehicles for us common folk.
@fabulousoffroaddesigns5080
Жыл бұрын
@@Jason-Samko well you can buy a 2007 or newer Ford F-150 and take it to your Ford dealer to add the front Torsen diff as a factory approved/dealer installed front hard locking LSD, and it is way better then a front E-locker and almost anyone can afford it if they choose to.
@raulochoa1017
Жыл бұрын
Vien explicado gracias
@Jason-Samko
Жыл бұрын
Glad you enjoyed it
@Sapper19
Жыл бұрын
Originally 4x4 was 4 speed manual transmission and four wheel drive..
@Jason-Samko
Жыл бұрын
Interesting and did not know that
@carlossilviotube
Жыл бұрын
Great video. I am a mechanic and most people, even some 4x4 enthusiastic, dont know. By the way the power wagon Ran also has front and rear lockers
@Jason-Samko
Жыл бұрын
100% correct. the power wagon, the tremor 250 and 350 also have a version of front lockers even if just torsion lockers.
@preciosolejao9434
2 ай бұрын
You are missleading what 4x4 is
@Jason-Samko
2 ай бұрын
Explained exactly what it is and how it works in simple to understand terms in the video
@thestreets5206
Жыл бұрын
This applies to American crap
@Jason-Samko
Жыл бұрын
Yes it does and all the imports we get here.
@joelinden3494
Жыл бұрын
Go back to school wheels are opposite of each other’s
@Jason-Samko
Жыл бұрын
Appreciate the comment
@jaacksun4674
Жыл бұрын
My Toyota 4Runner is AWD and has a “center diff locker” so I’m still lost lol
@Jason-Samko
Жыл бұрын
A center locker just means that when you go into 4 low and engagement the center lock its a true even power distribution to the rear and to the front. still have the same problem with one wheel in front and one wheel in back doing the work. but the front end get 50% and the rear end gets 50%
@mail06513
Жыл бұрын
Finally, a video that clearly explains and show all the different types of 4 Wheel drive. Great video!
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