*Please note: In this video I have incorrectly mentioned that Torque is distributed/split based on wheel resistance. In reality, in an open differential Torque is split evenly 50%-50% to each axle regardless of wheel resistance. However, Power is split based on wheel resistance in an open differential, not Torque. Power = Torque x Angular Velocity. Therefore, in an open differential, if a wheel is in the air and freely spinning, the other wheel which isn't rotating isn't transmitting any Power (as Angular Velocity = 0, but Torque is still present). Watch out for a future video which further clarifies this.
Man this is one hell of a well made video, I have been doing offloading for over 8 years now & even made it to advance level riding with the big boys but honestly this is the first time I actually understood what is going on under the hood, why & how to possibly deal with it. Although I watch many videos about the topic, this by far is the most informative, comprehensive and simple to follow one. Thanks a million.
I dont mean to be so offtopic but does someone know of a method to get back into an Instagram account..? I was stupid lost the password. I would appreciate any help you can give me.
@Gannon Nathan Thanks for your reply. I got to the site on google and I'm waiting for the hacking stuff atm. I see it takes quite some time so I will get back to you later with my results.
I swear I NEVER comment on videos but I had to give a shout out for this brilliant explanation. I’m new to 4WD and this is the first decent explanation I’ve found. The simple graphics helped one hell of a lot too. Can’t thank you enough.
Best video I have ever seen on how the 4x4 drive systems work. You not only have a very good understanding of how these systems function, but you are also very good at communicating your knowledge.
One of the best instructiona and educational videos I have heard in a long time and the honesty in self correction is appreciated. Thank you Sir for your service. Wish we had more people like you.
I have never driven any 4 wheeled vehicle, yet this video is informative and very easy to understand for me, you have explained it perfectly with animated diagrams and real sample drives!! well done and thank you!!
My goodness, a channel that actually explains and shows examples of when to use 4 low or 4 high. Gotta see an example if you’ve never done off-roading. Thx
Hi, very well made video, although I noticed a mistake on 3:30 minute mark about open diffs. It will be easier to explain if I just directly quote from CarThrottle website. "Open differentials are the most basic form of a differential. The purpose is to allow for different speeds between the two wheels, while torque split is held constant at 50/50. A common misconception with open differentials is that when one wheel is lifted, 100 per cent of the torque is sent to it. This is not true, however the amount of torque sent to the wheel with traction is very low because the amount of torque required to spin a wheel is also low. Remember, both wheels always receive equal torque, but if one has no resistance (eg. if it’s in the air), the amount of torque sent to the drive axle as a result is very low." So, open diff will always split the torque 50/50, even if one wheel is off the ground. We just get the illusion that 100% of the torque is going to one wheel because it is spinning but in reality diff is still applying the same ammount of torque to the non-spinning wheel (It is still trying to turn it). There is also a mistake in the video about locked rear diff. I will quote again: "Locked differentials are on the opposite side of the spectrum versus open diffs. The purpose is for wheel speed to remain constant between the two wheels, and the major benefit here is that torque will go to the wheel with traction, up to 100 per cent at a single wheel." That means that when the rear diff is locked, torque is not split 50/50 (that's open diff), but it varies up to 100% on one wheel. For example if one wheel is in the air, wheel on the ground will get 100% of the torque. Or if one wheel is on the ice and other on pavement, the wheel on the ice will get lets say 23% of the torque while wheel on the pavement will get the remaining 77%. Engineering Explained goes really in depth on this topic, I recommend watching some of his videos about this. This one is good: th-cam.com/video/_HOa0aRZYpw/w-d-xo.html&ab_channel=EngineeringExplained
Your explanation is more true, but a bit harder to understand for someone who hasn't had a more higher class in physics. I get however what NJS is talking about. That way it's easier to understand for me (as a noob) what's happening. It would've been better if he didn't use the phrase 'torque', but more something like 'movement or momentum'. However, thinking about that, it could also be interpreted wrong. The video's from engineer explained go waaaay more in depth and use all the correct terms and calculations, but are harder to convert to driving in the real world. NJS covers way more topics in the same time that Engineering explained used to talk only about diffs.
I am new to 4wd and this is the 2nd video ive watched about 4wd systems, and it doesnt make much sense. This comment that i am replying to might be a little more comolicated then the video, but aeast it makes sense. This video was saying that open diffs have a big flaw, and closed diffs have a big flaw which dosent nake much sense, since cars are to old to have big problems like that. How it was explained makes it sound like a really ineffective design, almost like a new technology, which it's not. With that being said, is it really that bad to go on grippy surfaces in 4wd if torque is applied differently and the wheels are spinning at different speeds if its a locked diff? Am i missing something or what?
@@WhynotMinot If the rear diff is locked, rear wheels will always spin at the same speed. Torque on the other hand will be split differently between them.
@@edewaal97 How is it better or easier to understand something that is completely wrong? You want to understand how a radio functions. You turn it on and then gasoline runs to the injectors turning the volume on... No it doesnt. Doesnt matter if that is "easier" to "understand" than what is actually happening. That's a completely meaningless and waste of explanation that cant be used for anything..... since its wrong......
Great video, mate ! This is the most comprehensive panorama of the topic I've ever seen. As a follow-up, you might want to cover the gearing system in the wheel hubs of Unimogs and Hummers. My first offroad fun was in 1974 in Ethiopia driving a Gaz, a robust Russian military jeep: side-valve engine, 3 forward gears, part-time 4WD with high and low ratios, + freewheeling hubs. I had incredible adventures especially in the Danakil Desert.
Thank you, As a returned 4wd'er I forgot most of what the gears do, I did get stuck a few times and being somewhat hot headed I turned back with my tail between my legs, Now I understand the system in my Prado I am more confident and will think before I go at it. I will watch this again just to be sure, Thanks for posting..
Excellent video. Professionally done. All the important information you need to know with visual aids and real life examples without annoying background music!
This is a phenomenally well done video. Thanks for the serious knowledge drop. I don't feel like I could work on a 4WD vehicle, but I am definitely less likely to screw one up by driving in 4WH/L in high traction scenarios.
I never knew what the difference between 4H and 4L is, although I intuited that 4H is meant for higher speed and 4L for lower. Thanks for the concise and clear explanation!
Hi guys, that is one brilliant, well put together video. One point, in the Free Wheeling and Permanent Locked Hubs Section, you show the Nissan Patrol 2-Way Lock Free-Running Hub. This had two settings: Auto or Manual Lock. With this unit set to Auto, you can shift straight into 4H or 4H without doing anything to the hubs, its done electronically. If for some reason the electrical system fails, then it allows you to manual lock the drive using the wheel brace. Fabulous piece of kit.
Great video man! When I've bought my Jeep Cherokee XJ and I was testing the car with the ex owner, on a high traction surface with 4H mode coupled, some weird noise were coming from underneath. I, with little knowledge about 4wd, was asking the ex. owner: is the car alright? why is she doing like this? And the ex. owner, also a - '4wd not know er' - was rubbing his shoulders and the only thing that he could say was that: I know that the car is ok...what could I say...let me call the mechanic :)) So, this video is a gem, especially for people like me! Thanks
The best explanation I ever found. Thanks. It is simple yet extremely informative and in less than 20 minutes you have covered such a vast topic. Thanks again and best wishes.
I have a pretty annoying habit of needing to have some level of technical understanding fir anything I'm attracted to. I bought my first 4WD vehicle and needed to answer many questions: What is a center diff? Hiw does 4L differ from 4H? Hell, what is a diff? This video eloquently strings together many concepts in a manner that enables novices ti obtain some elementary understanding of their machines. I was lost trying to find a comprehensive video till I stumbled on this. Much obliged!
I've been able to better use the 4 wheel gear from experience with a very distorted idea of why and how it works the way it does. From this video, I can now understand almost fully why and how it happens the way it does. At least, my experience really helped me understand this video very well.
Excellent video. Most of us may not remember the numbers involved but surely more knowledgeable in applying this information whenever selecting 2H, 4H or 4L on different surface and environmental conditions. For those drivers who own AWD now better understand difference between AWD and 4WD. I expect more informative videos from you. ⭐️⭐️⭐️⭐️⭐️
The 1972 military jeep I drove in the army gave us the options of 2 high and 2 low, along with 4H and 4L. They were tough beasts with an inline 4 cyclinder engine and 3 speed manual tranmission.
What a great video, great explanation. I have the latest land cruiser prado which is full time 4WD HI, but you can select 4WD Low and the centre diff can be locked in either 4 hi or 4 low. I always say you know if you have a true 4WD, as it will judder when you turn with it on dry surfaces and will be difficult to steer at slow speeds. The prado is exactly like this. So too is my truck. Although that is 2WD rear and can be put into 4WD low and High with rear locking diff. Stiff as anything to steer on dry surfaces. With my truck if you go above 35kph the diff with automatically disengaged so no danger of damaging the diff or drive train.
Cheers, thank you. The judder you mention will lead to wind-up, too much of it will eventually damage the drivetrain. Be sure to check out my Part 2 video.!
@@NJSInstructional yes absolutely, I obviously don't drive on dry surfaces with the diff lock, was just mentioning how it behaves when engaged on a dry surfaces.
Thanks a lot ! I used to drive land cruiser 100 , which is full time 4x4, and I am about to switch to LC70 , so part time 4x4.Since I appreciate so much the feeling of driving in 4X4 even on the highway, I was thinking that I could drive it all the time in 4x4 high range.... Now I understand I better not.
3:56ish. The wheel with the least traction does not receive 100% of the torque. All driven wheels will receive equal torque all the time in a truly open differential system (less traction control systems). Say a wheel breaks traction when torque applied exceeds 15 foot pounds of torque. All driven wheels will receive that same 15 foot pounds of torque. A spinning wheel indicates a reduction of torque being applied to all driven wheels. All driven wheels will always receive equal torque(less traction control).
This is true. The engine does not produce torque alone, it produces rotation which causes some torque depending on the load. If one wheel slips at 15 Nm of torque, then all the others still get that 15 Nm too (in an open diff system), and the engine will be loaded to 30 Nm (assuming 2 driven wheels). That 30 Nm yields to some force (torque divided by the wheel radius, exactly) and if it happens that it is not enough to move the vehicle then you are stuck.
Well done , I m mechanical engineer and automobile engineer l couldn’t demonstrate as you had done, many thanks,well spoken,well knowledge,and simple, millions thanks ,I will subscribe right know
thank you for talking about full time 4wd. I have gotten into arguments about people how full time 4wd cannot exist. That anything that claims to be full time 4wd is really AWD. My old Discovery would always beg to differ.
Exactly, there is a big difference between AWD and Full time 4wd with locking center diff. The biggest difference being a full time 4wd has a locking center diff which essentially makes the 4wd identical in operation to a part time 4x4 with 4wd engaged. Also, a full time 4wd has 4lo and AWD does not.
I have a 2002 jeep Grand Cherokee Laredo 4×4 high and low and its nothing like all wheel drive, I take my jeep 4×4 anywhere but the all wheel ford I had couldn't go where the true 4×4 can go.in my opinion 4×4 high and low are best for off road and on road.This Was A Great Video And it confirmed that the true 4×4 is superior. Thank You For This Information. New Subscriber here.
This video is teaching me a lot of things especially now that my Toyota FJ Cruiser is giving me problems. I'll be sending it back to the dealer with the hope that they can somehow sort out the issues as I believe it has something to do with traction of some sort.
Great video! Thank you. Watched a ton of videos on this yours really tied everything together and let me understand how these systems all work. Thanks brotha!
Great video You can still drive a Mitsubishi Triton (L200) in 4H in bitumen surfaces, they have 4 drive modes while others have 3. 4H for Bitumen and 4HLc for Locked Center Diff.
One question: On full-time 4 wheel drive, why can't we drive central differential locked all the time in high speed? Central differential lock splits the power to the 2 axels, there is no harm when cornering unless front or rear differential is locked. But, manufacturers say we cannot and you also say so. Thanks.
You are definitely an expert on this subject, but your terminology is a bit off. A open diff always send equal torque to both sides, but since one side has no traction, torque is zero, thus the other side with traction doesn't turn, because torque is zero. With a locking a diff, the torque is NOT equally split. The lock is locking the rotation, whichever wheel has traction receive more torque. This is the actual physical explanation.
Excellent video, thank you very much for the work and effort put into it! Maybe it would have been interesting to mention "full-time 4WD" with viscous coupling as well?
Thank you very very much, I am so grateful for your sharing of information, now I know something that I never knew before, no wonder I always have problem with my old 4 wheel car, Hahaha..
*Please note: In this video I have incorrectly mentioned that Torque is distributed/split based on wheel resistance. In reality, in an open differential Torque is split evenly 50%-50% to each axle regardless of wheel resistance. However, Power is split based on wheel resistance in an open differential, not Torque. Power = Torque x Angular Velocity. Therefore, in an open differential, if a wheel is in the air and freely spinning, the other wheel which isn't rotating isn't transmitting any Power (as Angular Velocity = 0, but Torque is still present). Watch out for a future video which further clarifies this.
@Ralph Reilly Exactly, so you have zero Power distributed.
Thanks man
@@charleslupain thank you
Man this is one hell of a well made video, I have been doing offloading for over 8 years now & even made it to advance level riding with the big boys but honestly this is the first time I actually understood what is going on under the hood, why & how to possibly deal with it. Although I watch many videos about the topic, this by far is the most informative, comprehensive and simple to follow one. Thanks a million.
Except the description of part time 4wd systems!!!
I dont mean to be so offtopic but does someone know of a method to get back into an Instagram account..?
I was stupid lost the password. I would appreciate any help you can give me.
@Kyler Carl instablaster ;)
@Gannon Nathan Thanks for your reply. I got to the site on google and I'm waiting for the hacking stuff atm.
I see it takes quite some time so I will get back to you later with my results.
@Gannon Nathan it did the trick and I now got access to my account again. I am so happy:D
Thank you so much you saved my account :D
I swear I NEVER comment on videos but I had to give a shout out for this brilliant explanation. I’m new to 4WD and this is the first decent explanation I’ve found. The simple graphics helped one hell of a lot too. Can’t thank you enough.
Glad it helped
Best video I have ever seen on how the 4x4 drive systems work.
You not only have a very good understanding of how these systems function, but you are also very good at communicating your knowledge.
Glad it helped
Q
5:43
One of the best instructiona and educational videos I have heard in a long time and the honesty in self correction is appreciated. Thank you Sir for your service. Wish we had more people like you.
Glad it was helpful! Be sure to check out my latest video which I clarify the Torque distribution in Open and Locked Differentials.
I am definitely going to have to watch this a few times to grasp all of it. This guy should be a teacher
Glad it helped!
I have never driven any 4 wheeled vehicle, yet this video is informative and very easy to understand for me, you have explained it perfectly with animated diagrams and real sample drives!! well done and thank you!!
Great to hear! Thank you!
@@NJSInstructional except it's not well explained!!! Sorry
Why dont u give it a try then ?@stephenpartridge686
This video is where failed car advertisement scenes end up. Very well done video!
The part when you talked about front locking hubs clarified things for me. Thank you!
My goodness, a channel that actually explains and shows examples of when to use 4 low or 4 high. Gotta see an example if you’ve never done off-roading. Thx
You're welcome!
Hi, very well made video, although I noticed a mistake on 3:30 minute mark about open diffs. It will be easier to explain if I just directly quote from CarThrottle website.
"Open differentials are the most basic form of a differential. The purpose is to allow for different speeds between the two wheels, while torque split is held constant at 50/50. A common misconception with open differentials is that when one wheel is lifted, 100 per cent of the torque is sent to it. This is not true, however the amount of torque sent to the wheel with traction is very low because the amount of torque required to spin a wheel is also low. Remember, both wheels always receive equal torque, but if one has no resistance (eg. if it’s in the air), the amount of torque sent to the drive axle as a result is very low."
So, open diff will always split the torque 50/50, even if one wheel is off the ground. We just get the illusion that 100% of the torque is going to one wheel because it is spinning but in reality diff is still applying the same ammount of torque to the non-spinning wheel (It is still trying to turn it).
There is also a mistake in the video about locked rear diff. I will quote again:
"Locked differentials are on the opposite side of the spectrum versus open diffs. The purpose is for wheel speed to remain constant between the two wheels, and the major benefit here is that torque will go to the wheel with traction, up to 100 per cent at a single wheel."
That means that when the rear diff is locked, torque is not split 50/50 (that's open diff), but it varies up to 100% on one wheel. For example if one wheel is in the air, wheel on the ground will get 100% of the torque. Or if one wheel is on the ice and other on pavement, the wheel on the ice will get lets say 23% of the torque while wheel on the pavement will get the remaining 77%.
Engineering Explained goes really in depth on this topic, I recommend watching some of his videos about this. This one is good:
th-cam.com/video/_HOa0aRZYpw/w-d-xo.html&ab_channel=EngineeringExplained
Your explanation is more true, but a bit harder to understand for someone who hasn't had a more higher class in physics. I get however what NJS is talking about. That way it's easier to understand for me (as a noob) what's happening. It would've been better if he didn't use the phrase 'torque', but more something like 'movement or momentum'. However, thinking about that, it could also be interpreted wrong.
The video's from engineer explained go waaaay more in depth and use all the correct terms and calculations, but are harder to convert to driving in the real world. NJS covers way more topics in the same time that Engineering explained used to talk only about diffs.
I am new to 4wd and this is the 2nd video ive watched about 4wd systems, and it doesnt make much sense. This comment that i am replying to might be a little more comolicated then the video, but aeast it makes sense. This video was saying that open diffs have a big flaw, and closed diffs have a big flaw which dosent nake much sense, since cars are to old to have big problems like that. How it was explained makes it sound like a really ineffective design, almost like a new technology, which it's not. With that being said, is it really that bad to go on grippy surfaces in 4wd if torque is applied differently and the wheels are spinning at different speeds if its a locked diff? Am i missing something or what?
@@WhynotMinot If the rear diff is locked, rear wheels will always spin at the same speed. Torque on the other hand will be split differently between them.
@@edewaal97 How is it better or easier to understand something that is completely wrong? You want to understand how a radio functions. You turn it on and then gasoline runs to the injectors turning the volume on... No it doesnt. Doesnt matter if that is "easier" to "understand" than what is actually happening. That's a completely meaningless and waste of explanation that cant be used for anything..... since its wrong......
@@martinsv9183 True 😂
Never seen the explanation of the 4W modes this comprehensive.
Clear, precise and easy to understand because of your excellent delivery and accompanying videos and animations. Well done.
This is #1 video to explain this over years of watching YT. Great Job!
Glad you think so!
THANK YOU SO MUCH. I HAD NO CLUE HOW THESE THINGS WORK. YOURS IS THE 1ST VIDEO THAT REALLY MADE ME EASYLY UNDERSTAND.
Glad it helped! Be sure to check out my Part 2 video also!
Great video, mate ! This is the most comprehensive panorama of the topic I've ever seen. As a follow-up, you might want to cover the gearing system in the wheel hubs of Unimogs and Hummers. My first offroad fun was in 1974 in Ethiopia driving a Gaz, a robust Russian military jeep: side-valve engine, 3 forward gears, part-time 4WD with high and low ratios, + freewheeling hubs. I had incredible adventures especially in the Danakil Desert.
Thank you, As a returned 4wd'er I forgot most of what the gears do, I did get stuck a few times and being somewhat hot headed I turned back with my tail between my legs, Now I understand the system in my Prado I am more confident and will think before I go at it. I will watch this again just to be sure, Thanks for posting..
Glad it helped
Ive been having 4x4 for years, yet i did not know this much knowledge. Thank you for the explanation.
No problem!
Excellent video. Professionally done. All the important information you need to know with visual aids and real life examples without annoying background music!
Excellent video for me. New to 4WD and had no real idea what was really going on with the system. Thank you!
Glad it helped!
Just, Thank You. Just, Thank You. Thank You. God bless You. Grateful. Calm, detailed presentation. Very Grateful You Exist. Thanks for this video.
MY ISUZU 300 4X4 TRUCK IS PART TIME WITH LSD WITH MANUAL HUBS
THANK YOU FOR DETAIL VIDEO AS GREAT WATCHING
This is a phenomenally well done video. Thanks for the serious knowledge drop. I don't feel like I could work on a 4WD vehicle, but I am definitely less likely to screw one up by driving in 4WH/L in high traction scenarios.
Cheers, thank you!
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This truly was the best explanation of 4WD Systems I ever watched. Big thanks and keep on going 😉
Cheers, be sure to check out my latest Part 2 video which focuses in on open and locked differentials!
This video is the best thing one can ever get on these topics. Cheers mate
Excellent presentation!
My cousin and I would jump out and lock the hubs of a Toyota Pickup as kids when going to the ranch.
I have a limited understanding of the 4 wheeled driving and your presentation is really a good knowledge for me.Excellent video Sir.
Glad it was helpful!
Great video, as a newbie to 4WD'ng I didn't really understand the difference between 4H and 4L but now I do. Thank you for such an informative video.
Glad it was helpful!
This is the best explanation about 4WD I ever see, thank you very much.
Glad it was helpful!
a simple and easy way to understand of 4x4 use and diffrential! thanks mate.
Easy to follow examples and broken down in simple terms that almost anyone can understand…fantastic lecture on 4wd!
Cheers, thank you. Be sure to check out my Part 2 video on this!
Nice video. Btw your voice is so soothing that I slept half way through and had to re watch the video again !
I never knew what the difference between 4H and 4L is, although I intuited that 4H is meant for higher speed and 4L for lower. Thanks for the concise and clear explanation!
Glad to help!
4H is normal driving. 4L is for bad off-road condition in which vehicle will not move even in 1st gear of 4H mode.
Hi guys, that is one brilliant, well put together video. One point, in the Free Wheeling and Permanent Locked Hubs Section, you show the Nissan Patrol 2-Way Lock Free-Running Hub. This had two settings: Auto or Manual Lock. With this unit set to Auto, you can shift straight into 4H or 4H without doing anything to the hubs, its done electronically. If for some reason the electrical system fails, then it allows you to manual lock the drive using the wheel brace. Fabulous piece of kit.
Spot on Jim, thank you for clarifying. Not many vehicles these days have this feature...
@@NJSInstructional Nissan Patrol Y61: Belt and Braces. Thank you again for the excellent video and delighted I could be of help.
Great video man! When I've bought my Jeep Cherokee XJ and I was testing the car with the ex owner, on a high traction surface with 4H mode coupled, some weird noise were coming from underneath. I, with little knowledge about 4wd, was asking the ex. owner: is the car alright? why is she doing like this? And the ex. owner, also a - '4wd not know er' - was rubbing his shoulders and the only thing that he could say was that: I know that the car is ok...what could I say...let me call the mechanic :)) So, this video is a gem, especially for people like me! Thanks
You're welcome!
The best explanation I ever found. Thanks. It is simple yet extremely informative and in less than 20 minutes you have covered such a vast topic. Thanks again and best wishes.
Glad it was helpful!
i have watched a lot of your tube videos regarding this subject but you are the Master everything well understood thanks Pal .
Glad to help
I have a pretty annoying habit of needing to have some level of technical understanding fir anything I'm attracted to. I bought my first 4WD vehicle and needed to answer many questions: What is a center diff? Hiw does 4L differ from 4H? Hell, what is a diff?
This video eloquently strings together many concepts in a manner that enables novices ti obtain some elementary understanding of their machines.
I was lost trying to find a comprehensive video till I stumbled on this. Much obliged!
Glad to hear, be sure to check out my Part 2 video also.
I've been able to better use the 4 wheel gear from experience with a very distorted idea of why and how it works the way it does. From this video, I can now understand almost fully why and how it happens the way it does. At least, my experience really helped me understand this video very well.
Glad you enjoyed it!
It is very informative and enhances your knowledge how to use or apply a 4 wheel drive.
One of the best descriptions I've come across. Great video
Glad you liked it!
Excellent synopsis and explanation of the the different drive systems.
Cheers thank you, be sure to check out my Part 2 video released last month!
Finally understood all the different terms used in 4x4
The mighty patrol. Excellent coverage in this video. Cheers!
Glad you enjoyed it
Thanks for sharing this video, it is the best I have seen and make the issue clear
Great to hear!
Thank you for taking the time to explain, much appreciated.
Glad it was helpful!
Absolutely fantastic explanation - thanks for going to tremendous effort to explain this in an informative and easy to follow diagram! So so good!
Excellent video. Most of us may not remember the numbers involved but surely more knowledgeable in applying this information whenever selecting 2H, 4H or 4L on different surface and environmental conditions. For those drivers who own AWD now better understand difference between AWD and 4WD. I expect more informative videos from you. ⭐️⭐️⭐️⭐️⭐️
The 1972 military jeep I drove in the army gave us the options of 2 high and 2 low, along with 4H and 4L. They were tough beasts with an inline 4 cyclinder engine and 3 speed manual tranmission.
I finally understood the 4WD modes of my Grand Vitara!
Thanks a lot!!
Glad it helped!
Dude Explained a difficult topic with so ease and clarity. Thums up 👍
Glad it was helpful! Be sure to check out my Part 2 video also.
Great video. Found it very useful in re-educating myself in moving from Pajero SS-2 system to good ol’ transfer case 4H on the Raptor.
Glad it was helpful! Please also check out my Part 2 video!
What a great video, great explanation. I have the latest land cruiser prado which is full time 4WD HI, but you can select 4WD Low and the centre diff can be locked in either 4 hi or 4 low. I always say you know if you have a true 4WD, as it will judder when you turn with it on dry surfaces and will be difficult to steer at slow speeds. The prado is exactly like this. So too is my truck. Although that is 2WD rear and can be put into 4WD low and High with rear locking diff. Stiff as anything to steer on dry surfaces. With my truck if you go above 35kph the diff with automatically disengaged so no danger of damaging the diff or drive train.
Cheers, thank you. The judder you mention will lead to wind-up, too much of it will eventually damage the drivetrain. Be sure to check out my Part 2 video.!
@@NJSInstructional yes absolutely, I obviously don't drive on dry surfaces with the diff lock, was just mentioning how it behaves when engaged on a dry surfaces.
Thanks a lot ! I used to drive land cruiser 100 , which is full time 4x4, and I am about to switch to LC70 , so part time 4x4.Since I appreciate so much the feeling of driving in 4X4 even on the highway, I was thinking that I could drive it all the time in 4x4 high range.... Now I understand I better not.
Thank you, great presentation and detail. I most certainly know more now than I did before listening. Cheers
Cheers, thank you!
This should be a video shown to everyone before purchasing a 4x4 vehicle, like the safety videos you watch before you start a Go Kart race haha.
3:56ish. The wheel with the least traction does not receive 100% of the torque. All driven wheels will receive equal torque all the time in a truly open differential system (less traction control systems). Say a wheel breaks traction when torque applied exceeds 15 foot pounds of torque. All driven wheels will receive that same 15 foot pounds of torque. A spinning wheel indicates a reduction of torque being applied to all driven wheels. All driven wheels will always receive equal torque(less traction control).
This is true. The engine does not produce torque alone, it produces rotation which causes some torque depending on the load. If one wheel slips at 15 Nm of torque, then all the others still get that 15 Nm too (in an open diff system), and the engine will be loaded to 30 Nm (assuming 2 driven wheels). That 30 Nm yields to some force (torque divided by the wheel radius, exactly) and if it happens that it is not enough to move the vehicle then you are stuck.
Well done , I m mechanical engineer and automobile engineer l couldn’t demonstrate as you had done, many thanks,well spoken,well knowledge,and simple, millions thanks ,I will subscribe right know
The best explanation on the Net . Thank You!!
Glad it was helpful! Be sure to check out my part 2 video.
4:08 man, this is so important, most modern SUVS Don't have this, you can't lock all wheels and make them spin.
This is great info indeed.
This video was very informative and well put together. You earned my like, sir.
Thank you, be sure to check out the Part 2 video!
What an awesome video! Very very clear! I learned something new today thank you
Glad you enjoyed it!
I love to know about 4wd system. Thanks buddy... From india 🇮🇳🇮🇳🇮🇳
This video help me a lot as a starter working on off road vehicle
Cheers, glad it helped!
thank you for talking about full time 4wd. I have gotten into arguments about people how full time 4wd cannot exist. That anything that claims to be full time 4wd is really AWD. My old Discovery would always beg to differ.
Exactly, there is a big difference between AWD and Full time 4wd with locking center diff. The biggest difference being a full time 4wd has a locking center diff which essentially makes the 4wd identical in operation to a part time 4x4 with 4wd engaged. Also, a full time 4wd has 4lo and AWD does not.
@@ThisIsDavesGarage What about older Range Rovers and Jeep Grand Cherokee which have limited center diffs that cannot be locked but have low range?
I have a 2002 jeep Grand Cherokee Laredo 4×4 high and low and its nothing like all wheel drive, I take my jeep 4×4 anywhere but the all wheel ford I had couldn't go where the true 4×4 can go.in my opinion 4×4 high and low are best for off road and on road.This Was A Great Video And it confirmed that the true 4×4 is superior. Thank You For This Information. New Subscriber here.
Thanks dude, your video have become my 4wd bible.
This video is teaching me a lot of things especially now that my Toyota FJ Cruiser is giving me problems. I'll be sending it back to the dealer with the hope that they can somehow sort out the issues as I believe it has something to do with traction of some sort.
Great video! Thank you. Watched a ton of videos on this yours really tied everything together and let me understand how these systems all work. Thanks brotha!
Glad it was helpful!
Excellent video. More power and knowledge to you sir. Keep helping us and youre doing a great job.
Thank you, glad you found it helpful!
Thank you for this great information. It clears up so much confusion about four-wheel-drive systems.
Ok
Simply said, an well presented and informative explanation…. Much appreciated 👍🏼✌🏼
Glad it was helpful!
Simple and excellent explanation. Great job.
Great video and excellent explanation of 4wd systems 👍
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Excellently made and explained video for novice and pro alike
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Great explanation, a very well made video with practical examples from real vehicles, subbed.
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Realy very well explained. Thanks and good luck
Very good ty. Covers the basics of it very well.
This is the very best video on this topic
Cheers, be sure to check out my Part 2 video.
Bravo. At last a clear explanation. Thank you
Glad it was helpful!
So well explained!! Thank you for that!
Glad it was helpful!
Great video
You can still drive a Mitsubishi Triton (L200) in 4H in bitumen surfaces, they have 4 drive modes while others have 3.
4H for Bitumen and 4HLc for Locked Center Diff.
All Mitsubishi 4x4s have Super Select that you can drive with 4H on the highway.
The information provided here was very helpful to me thanks.
Glad it was helpful! Be sure to check out my Part 2 video also.
THE best video for explaining 4x4
FANTASTIC summary. Great job. Thank you for making this.
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Bloody brilliant video. Very helpful. Thanks!
Glad you liked it!
I feel like a deserve some kind of physics certificate for watching and understanding this video. Thank you
Glad you enjoyed it!
Wow, the most instructive video i saw in a long time. Thanks!
Wow 👍🏻 very well explained 👏🏻 straight to the point.
Cheers
Thank you for this video !! Well explained !
Glad it was helpful!
Wonderful video. Very informative and concise. Great job!
Glad it was helpful!
Thank you soooo much for this video I just bought a 4x4 truck and I had no idea how it works
No problem 👍
One question: On full-time 4 wheel drive, why can't we drive central differential locked all the time in high speed? Central differential lock splits the power to the 2 axels, there is no harm when cornering unless front or rear differential is locked. But, manufacturers say we cannot and you also say so. Thanks.
As you will induce 'wind-up' in your drivetrain...
@@NJSInstructional Thank you. Just have learned about wind-up.
Great video. Answered all my questions about diff lock. 👍
Glad it helped
Excellent video and easy to follow as an armature
Glad it was helpful!
Thanks!
Great, thank you!
Fantastic and simple explanation. Thanks
Glad it was helpful! Be sure to check out my Part 2 video!
Amazing info.superbly explained..point to point ,thanks,regards
Glad it was helpful!
You are definitely an expert on this subject, but your terminology is a bit off. A open diff always send equal torque to both sides, but since one side has no traction, torque is zero, thus the other side with traction doesn't turn, because torque is zero. With a locking a diff, the torque is NOT equally split. The lock is locking the rotation, whichever wheel has traction receive more torque. This is the actual physical explanation.
That is based on the explanation of physical work done. It is not how power split or power delivery works in a differential.
Excellent video, thank you very much for the work and effort put into it!
Maybe it would have been interesting to mention "full-time 4WD" with viscous coupling as well?
Cheers, thank you!
Thx. Cleared up some misconceptions I had.
Very informative, although most of it went over my head.
Thank you very very much, I am so grateful for your sharing of information, now I know something that I never knew before, no wonder I always have problem with my old 4 wheel car, Hahaha..
Glad it was helpful!