I love how so many people have to clarify they already know the material. Either way, it doesn't matter haha. I didn't know all this up until a couple months ago, there's no shame in not knowing! Learning is important, so hopefully something good can come from it. But thanks for watching and participating in discussion! Wind up simply refers to the torque that passes thru your drivetrain due to the wheels not being able to rotate at various speeds. The outside tire is hindered from rotating.
@tragedygaming3186
2 жыл бұрын
5th like
@richardbeto1615
2 жыл бұрын
I know these videos are a little old now but still very excellent. Thank you
@jaibabu7481
Жыл бұрын
just now after watching the video only i came to know all these bro ❤️
@Andy152R
9 жыл бұрын
Hey pal, been working on cars my entire life. And sadly, I'm an engineer . But besides shortcutting and not ripping it apart to figure it out, I've never known how a 4WD works. Now that my transmission went out, I needed to get an idea. I needed to know what does what. You helped immensely. Thanks!
@derekmorrow6274
9 жыл бұрын
^^This is why you should never trust your local auto mechanic :)
@Andy152R
9 жыл бұрын
And... that's why I do them myself. Lol. But mostly it's been rear wheel drive classic cars. Apparently these 4WD's are less complicated than I thought. Mine's already fixed. Got it done a few hours ago.
@stephaniebacha2001
6 жыл бұрын
Samuel Colt we S
@Brancovtn65
11 жыл бұрын
You can say that again... Thanks for taking the time and effort to help us understand car concepts a lot better. I've been looking for this kind of info for a lonnng time, and it's a blessing to find a KZitem channel that is fully dedicated to just that. As well as adding in recommendations so newbies such as myself don't make any careless mistakes in the future. Keep it up!
@EngineeringExplained
12 жыл бұрын
Yeah I suppose. You seem to be enjoying this channel, glad you like it! Cheers.
@EngineeringExplained
11 жыл бұрын
It's an even lower gear set for when higher torque is needed and speed isn't necessary. (The vehicle is stuck, etc..).
@EngineeringExplained
11 жыл бұрын
Very good to hear, glad you've learned!
@EngineeringExplained
11 жыл бұрын
So a center diff isn't needed because in this scenario the transfer case splits the power between the front and the back, and the front/rear diffs make up for the differing speeds of the wheels.
@kronkodile
11 жыл бұрын
I've only watched about 3 minutes of this video and already have a HUGE understanding of this, thanks a lot!
@EngineeringExplained
12 жыл бұрын
A third differential is not totally necessary. I'm assuming these vehicles can switch out of this mode, and perhaps use just the rear tires? If so 4WD would be reserved for situations like being on dirt, when the tires could slip easily and not cause additional wear.
@EngineeringExplained
12 жыл бұрын
Subarus use AWD, yes, and it's always active. The setup on Subarus is also symmetrical so the weight is balanced.
@EngineeringExplained
11 жыл бұрын
Absolutely, thanks for watching!
@EngineeringExplained
12 жыл бұрын
Lock-up usually refers to the brakes locking the tires up, preventing them from rotating. This happens in cars without ABS, such as formula 1 cars, where the drivers are expected to feel the exact forces the car can withstand without sliding.
@toyotaoforlando
9 жыл бұрын
Great video! It sure makes it easy for non-car folks to understand 4WD.
@EngineeringExplained
12 жыл бұрын
I consider KZitem to be my second job. :) So in a way, yes?
@EngineeringExplained
11 жыл бұрын
Perhaps you could. Check with forums and see what other people have done. But the cheaper option might be to swap cars. I don't know, I just recommend braking it down by cost, unless you just want to do it for fun, in which case, go for it! Unique things like that are awesome in my opinion, just not too cost effective.
@EngineeringExplained
11 жыл бұрын
I don't think so, but it probably depends on the system. Some may not like it, others may be fine. You can always ask a dealer if it's specifically your vehicle.
@wannabeangler
8 жыл бұрын
I thoroughly enjoy all your videos! You must be a genius in order to know so much about the working variations in vehicles. I'm not a mechanic nor am I any kind of grease monkey, but have become highly interested in mechanics in my later years. I toy with ideas on my truck and explore different ways to better the output performance. When I can't find an answer, I come to your videos. I'm obviously more inclined to the working knowledge of my truck, but my mental capacities are limited. Thanks again!
@the80386
8 жыл бұрын
+wannabeangler he is a mechanical engineer
@EngineeringExplained
12 жыл бұрын
The internet is pretty powerful. Put enough time into it and you can learn just about anything. And I've got several books, read magazines and blogs, and a trip to the junkyard every so often to tamper with some engines never hurts.
@EngineeringExplained
11 жыл бұрын
It seriously has it all.
@RamosDominicano
8 жыл бұрын
Great video Jason! I have watched well over 100 of your videos, but I have to admit, this is probably the one that I learned the most on. Keep up the good work bud!
@EngineeringExplained
11 жыл бұрын
I'd try reading on forums of previous owners of 4runners and seeing their thoughts of the vehicle. Since it's a Toyota though, chances are it's reliable. They're nearly always ranked near the top of reliability tests.
@stalinyourleader3846
7 жыл бұрын
Once on a drive with my father, he ripped out the driveshaft of his truck (as it was snapped in half) and we kept on driving in 4 wheel drive with just the front wheels.
@mabroukatis
11 жыл бұрын
The only difference between 'Full-time' 4x4 and 'Part-time' 4x4 is actually what are called the locks in center diff (or in all of the diffs). Full is good for handling on the road while Part is better in rough terrain when some wheels are not on the ground. Reason why Full and Part is not to conflict with the AWD which used to be permanent, and --of course no locks diffs--so they 'translated' it to Full-time 4x4 and kept our offroading favourite as 'Part-time' in contrast. Keep it up! :)
@matthewmckinney2709
Жыл бұрын
I have one of the rare full time 4WD Tahoes with 4 Lo option (2005 Tahoe LT with Autoride suspension). It is amazing in the snow. It’s the Borg Warner 4482. It has full time 4WD (60:40 split) and the 4 Lo button that allows the center diff to lock it to 50:50 torque split. But it has no 2WD option. Sometimes I wish I had the standard transfer case. But, it’s a very unique setup for sure. It’s a similar transfer case to the Borg Warner in the Hummers (BW4484) but mine lacks the 4 Hi (locked center diff) option and the Super Low option some Hummers have (3 speed transfer case).
@EngineeringExplained
12 жыл бұрын
Correct, the CRV does the same thing, but it's also AWD. Just uses the rear tires when the front tires slip.
@ZZPxFTW
11 жыл бұрын
i am aware of electronically controlled diffs and haldex transmissions. in terms of accelerating traction the order would be fwd, rwd, awd (assuming they are running the same tires) because inertia forces the mass of the car to the rear, providing more grip for the rear wheels. thank you for that info on the SUV's though, neat stuff
@EngineeringExplained
12 жыл бұрын
Aerodynamics is definitely a topic I will need to cover. And KERS is such an awesome technology, so I will definitely need to make one on that as well. Ahh, just need time!
@calibermoon
11 жыл бұрын
The problem I have with AWD vehicles is that they do have a differential between the front and rear wheels. Horsepower & Torque follow the path of least resistance through the drive-train. So if the rear wheels are on ice and front wheels are on pavement, the rear wheels will spin without much help from the front. A part-time 4wd would not have this problem. I'm surprised that manufacturers simply don't offer a lock-in lock-out differential between the front and rear wheels. Good stuff, thx
@stewartconley5807
11 жыл бұрын
Hey u guys should go get a jeep and build it to advertise E.E..I'm an avid jeeper and your explanations on the principles of how drivetrain actually works are great and very easy to understand thanks..
@ChrisAllenJ
3 жыл бұрын
@00:23 man that differential Video is really informative
@EngineeringExplained
11 жыл бұрын
I would say be stopped and in neutral when switching between full time and auto. My friend had a jeep with the same issue, this is what he did. Full time is best for heavy snow, and ice. Part time/auto is good for rain and light snow. Was just in Chicago last Thursday (just the airport). You guys got some decent snow I believe.
@EngineeringExplained
12 жыл бұрын
If you were to lock the differential, yes, but this should only be done off-road or in conditions where your tires can slip.
@henrybondok7824
7 жыл бұрын
Thank you for explaining the difference between full time and part time 4wd.
@EngineeringExplained
12 жыл бұрын
No, basically you'll just have one tire spinning if you're running open diffs. And with one tire spinning, torque is low to all wheels, so you won't move much. A locked (or LSD) is better in the snow because all 4 wheels rotate at nearly the same speed, meaning torque will go where needed, rather than just spin the tire with the least amount of traction.
@EngineeringExplained
12 жыл бұрын
Yes, and it puts a torque across the entire drivetrain. It's not necessarily the best thing to do. But it mostly affects the car when you make low speed turns, in which case (usually) the outside tires will just have to scrub.
@EngineeringExplained
11 жыл бұрын
No, as it's not commonly done nor is it cheap. The best thing to do would be to just get a car with the layout you want.
@desertfox2020
12 жыл бұрын
Thanks for the reply. I argued with him about it a little bit, he claimed it made no difference and I basically told him not to complain when he needs new tires.
@Islander39er
12 жыл бұрын
ok glad to help, just being thorough since i didn't know what exactly you knew already..hey i even just review stuff i already know all the time, wouldn't watch these videos if not. knew everything exept 1 little thing on this video already..well glad i could help man. peace.
@EngineeringExplained
11 жыл бұрын
You are welcome, thanks for watching!
@ctznsoldier_gaming
3 жыл бұрын
I have learned so much about vehicles from your channel! Definitely helps me out in my career choice (no not gaming haha)
@richardbeto1615
2 жыл бұрын
Very helpful. Knowledge is power and you seem to have a lot of knowledge. Thank you for such educational content.
@alansaer5821
8 жыл бұрын
Thanks for the video man, thus gave me a better understanding of 4X4
@franksgutters
11 жыл бұрын
Perfect. I am learning a lot. I am someone who has little knowledge about engines and 4WD. Coz I bought a nissan elgrand 1997 and it is in beutifull conditions.
@l337pwnage
11 жыл бұрын
Not that I disagree with anything you've said, I don't, I just wanted to add that sometimes instead of the "All Wheel Drive" / "Four Wheel Drive" dichotomy, they use the terms "Full Time Four Wheel Drive" and "Part Time Four Wheel Drive" to describe the difference. I have to admit one point the other guy makes that I agree with is that not all "AWD" vehicles really are. Some are mostly 2WD with an auxiliary drive that only engages when needed.
@dboyinaz
10 жыл бұрын
Great vid. Quick correction. The vehicle at the end was a grand cherokee not a normal cherokee. You can tell because of the fact that it has coil springs in the front and rear. The normal cherokee has rear leaf springs.
@matt7621
12 жыл бұрын
Best explanation I've seen so far! You look like my lil bro.
@EngineeringExplained
12 жыл бұрын
Ahh, if it says AWD then it's not setup like this with a transfer case, more than likely. Instead that transfer case would be replaced by a center (open) differential, allowing different speeds between the front and the back wheels.
@letspwnnubs
11 жыл бұрын
best channel ive found on youtube!
@EngineeringExplained
11 жыл бұрын
I'd be stoked to see E.E. on a jeep haha. Maybe I should look into bumper stickers/car magnets?
@panthersroc
12 жыл бұрын
this video helped out a lot i was wanting to know if you could do a video that consist of payload, towing capacity, and the meanings of 1500,2500, and 3500 trucks and maybe why if you jack up a truck, you loose power
@EngineeringExplained
11 жыл бұрын
I'd just put it in neutral and switch it to 4x4 while stopped. I do believe on many vehicles now it's common to be able to do it while moving.
@maxasok
12 жыл бұрын
Thank you for the great Video explanation. Theoretical explanation with the aid of diagrams help me to better understand the topic. Thank you and I'm looking forward to learn more. Cheers...
@matthewmosca3984
4 жыл бұрын
Thanks! Was wondering why a 4x4 with transfer case AND center diff would be disadvantageous off road.
@EngineeringExplained
12 жыл бұрын
I'm sorry, I don't quite understand your question, could you elaborate?
@EngineeringExplained
11 жыл бұрын
The lower gear provides more torque but is limited to low speeds. The higher gear has less torque but can reach higher speeds.
@EngineeringExplained
11 жыл бұрын
Differentials allow for differing speeds, AWD vs full time 4WD.
@MrIrrepressible
12 жыл бұрын
you have a real talent for teaching, have you considered teaching as a career?
@cowskater5
12 жыл бұрын
real? i had no idea thanks man. i am going to look that car up. it sounds preaty cool
@monitutor
9 жыл бұрын
Hello my brother, I'm 20 years old, I'm from Brazil. Your videos are very good. They've held me and my team on our project. We are working on a Formula SAE car. Could you say something about it? About the Steering system. Thank you, and congratulations :D
@Islander39er
12 жыл бұрын
one question: what is transmission wind up?dont think i even heard the term before. ..great explanation by the way, although thats the one and only thing i didn't know long before watching the video. still interesting fun to watch though. i'm like that reviewing stuff i already know though...these videos seem great for somebody who doesn't know about this stuff though, so keep up the great videos!
@EngineeringExplained
11 жыл бұрын
Awesome, thanks!
@EngineeringExplained
11 жыл бұрын
Unfortunately I do not, perhaps one day! Thanks for watching!
@suhasshaik8777
8 жыл бұрын
EXCELLENT COMMENT FROM LAKSHMAN SIR
@EngineeringExplained
11 жыл бұрын
Two transmissions, personally I think it's over-complicated, though I understand why they did it (keeps it lower).
@Angel-gw2bb
11 жыл бұрын
It would be such a helpful video if you break down the nissan gtr's attesa all wheel drive system I hear its very unique I urge you to make a video on it I'm sure it would be the best explainable video ever because all of your vids are understandable
@EngineeringExplained
12 жыл бұрын
4WD incorporates a low gear range, where as AWD does not.
@EngineeringExplained
12 жыл бұрын
Carburetors haven't been used in production vehicles (for the most part) since the early 90's. Your Lumina surely has fuel injection. I've got videos on both topics, if you search my channel for them. Carburetors and Fuel Injection.
@AdrianChairez0377
2 жыл бұрын
Very GREAT explination thank you
@mjreeves3
3 жыл бұрын
I know this is a very old video and you’re a very busy person, but a question.. what prevents the addition of a mid-differential on part-time 4x4? Power loss during slips? Could that power loss be overcome with locking differential mechanisms?
@EngineeringExplained
11 жыл бұрын
Thank you!
@richiieriich
4 жыл бұрын
Need explained four wheel drive on passo review if used on another Toyota carolla 5 speed gear box
@Islander39er
12 жыл бұрын
i'll try to fully explain:2WD is a 2 wheel drive mode(rear wheels on most part time 4x4s), 4H is 4 wheel drive regular speed, 4L is 4x4 low range(low speed)4x4 for extreme torque and traction. neutral is exactly that;i assume by actual shift you mean the transmission. i guess its kinda the same purpose, the transmission's neutral is a mode where no gear is engaged, the transfer cases neutral cuts power to both axles with the transfer case. so kinda the same i guess..hope I helped man.peace.
@3dwin014
11 жыл бұрын
Thanks for explaining, it makes me understand better.
@hemanthharsha1070
4 жыл бұрын
In the transfer case, Already there is a smaller sprocket attached to front differential which enables it to move faster than the speed of drive shaft..... So what's the idea in adding another central differential incase of full 4wd?
@N8-T
11 жыл бұрын
Im glad im not the only person my age that seems to understand this.
@arefeshghi
7 жыл бұрын
This was not as good as your other videos. Instead of 2, I had 20 questions at the end! :) The main problem is that you did not 'explain' the 4WD, you just touched the topic.
@Berrystrongsauce
6 жыл бұрын
I am confused on why you would add a differential behind the transfer case to the rwd shaft. If the problem is the front tires spinning to fast on cornering wouldn’t you want the differential on the driveshaft going to the front axle? Thus slowing the front tires down on cornering?
@ayushsrivastava6385
9 жыл бұрын
Awesome video ....you explained it very clearly and easily..
@wilXwyane
11 жыл бұрын
One days good enough for me! Thanks again!
@PeturSubev
12 жыл бұрын
Great video once again! With your videos I get the idea for important part of the car :) Keep up the good work , thank you.
@desertfox2020
12 жыл бұрын
I know someone who popped the pumpkin off their Blazer and welded the diff, making a permanent diff lock. They drive off road somewhat, but nowhere near as much as would warrant something that drastic. The biggest problem they'll have is faster tire wear, correct?
@BarDownBoys
4 жыл бұрын
Can full-time 4wd "lock" that extra differential so as to act like a part-time 4wd?
@EngineeringExplained
11 жыл бұрын
Should pop up as an annotation - let me know if it doesn't work.
@EngineeringExplained
11 жыл бұрын
Dunno about which is best, but personally I love the Mercedes G-series. They're like six figures though..
@EngineeringExplained
11 жыл бұрын
As in it's the same model?
@davidhairston8283
8 жыл бұрын
This was actually pretty helpful
@navinporsche
10 жыл бұрын
Nice job..This video answered most my questions that I had about 4X4.
@mikemcgown6362
2 жыл бұрын
This question may be answered in a different video, but I wanted to know if you have an open differential rear axle and open differential front axle axle, doesn't that compensate for the front and rear tires rotating at different speeds while cornering to prevent transmission wind-up?
@GhostFleetServices
12 жыл бұрын
Normally the front driver and the rear passenger will spin when 4x4 is engaged with open diffs.
@MrIrrepressible
12 жыл бұрын
have you considered doing some tutorials on car modification parts such as cold air intakes, performance exhausts toruw dampeners etc?
@3dwin014
11 жыл бұрын
And 1 more question is why is there a need for lo and hi gear in the transfer case when it can already shift the gear in the transmission?
@Nicosh1471
12 жыл бұрын
So is the lack of a 'central' diff the cause of front-wheel 'lock-ups' (the sort of things commonly seen in F1)?
@SteezyOtis
11 жыл бұрын
I was wondering if you could do a video on "oil pick up tubes" and how they work?
@liubohan7008
9 жыл бұрын
I've watched your video on Ackerman steering and know that front wheels rotate at higher speed than the rear wheels. However,by having the front driveshaft connected with the rear one with a chain, the rotational speeds of shafts already differ. In other words, it already fulfils the task of a central differential. Could you get me clearer on that?
@saeidnazemi1312
9 жыл бұрын
I was just thinking the same. Wouldn't the 2 gears inside the transfer case already fulfill the task of differing rotational speeds of the front and rear drive shafts?
@maxjtj31
9 жыл бұрын
+Saeid Nazemi Not exactly because when driving in a straight line, the fronts and rears should be spinning at the same speed, so if the transfer case had slightly higher gearing for the front wheels to account for turning, the rear tires would just be dragged when moving in a straight line because they would be moving slower than the fronts. Also, the front wheel speed to rear wheel speed ratio is always changing during a because the higher the degree of steering input, the faster the front wheels have to spin compared to the rears, which means it would be pointless for the transfer case to have a fixed ratio
@WaRMaCHINE789
11 жыл бұрын
Excellent video
@davidhoover8862
3 жыл бұрын
YOU ARE A VERY SMART YOUNG MAN.
@desertfox2020
12 жыл бұрын
Yeah same, I watch these mostly because they interest me, for the most part I know alot of the information already.
@Pctreblih
11 жыл бұрын
So part-time is the same as a locked center diff? What is the front diff on most part-time 4x4 pickups? Is it open, LSD, or locked?
@Islander39er
12 жыл бұрын
glad to participate;yeah no shame in not knowing and learning is certainly important, there was a time i didn't know any of this and had to learn, still a fair bit i dont know on the vehicle topic, and i didnt have any idea before watching some of your videos on different things. i still have trouble getting exactly how automatic transmissions work...got alot of it though. but yeah thanks, i look forward to your next video, keep it up. as to the question, thanks i think i got it....peace man.
@mr.k5011
4 жыл бұрын
so wouldnt the presence of front and rear diffs ease ackerman steering enough to utilize 4h all the time. even on dry pavement? i never have any issues when i run 4h on pavement except when i turn sharply as in a right turn into a gas station from the highway. i mean most ppl are iffy about 4h on dry pvmnt but thats before we added the differential... any friendly banter would be appreciated.
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