Thank you for actually breaking apart the diffs so I can visually see the mechanisms inside. Took you under 2 min to explain something other 10 min videos couldn't.

Interesting experiment. The quick edit was good too, right to the point. Thanks!

Thanks for showing this as a practical experiment

Thanks for getting straight to the point no bs for 4 mins before hand

Nice and simple. Great learning moment, sir !! Hypoid gears always have a tangental force that makes them want to separate, thus enhancing the effectiveness of the respective clutch pack.

Really good demo and explanation of the limit of a limited slip diff.

Dude! Great job! We definitely owe you a beer! Really like your torque wrench! I have a similar one that was my mother's in WWII where she was an airplane mechanic!!

Thanks for sharing this video. It's much easier to understand when looking at the actual component. Looking forward to see more videos like this.

The important thing to remember is that the force required to move the wheels separately is dynamic, because when torque is applied from the drive shaft the spider gears will try to spread apart increasing pressure to the clutch packs.

@AustinCoulson

2 жыл бұрын

100%.

@ToyotaGuy1971

2 жыл бұрын

@@AustinCoulson even thought the spring pushes the spider gears together; the spider gears must be able to separate from each-other more than in a standard differential. If that's so; the gears would wear out faster, from not always being at the optimal distance from each-other.

@zteaxon7787

Жыл бұрын

More resistance to the torque (friction) means the clutch pack on that side is more compressed (locked) by the separating force introduced by the driveshaft gear. It's very clever.

@VincentAdultmanbearpig

Жыл бұрын

Which makes sense, but wouldn’t it be better to have a system that provides force at lower speeds as well? Like if you’re trying to get up to speed from park with one wheel on ice, wouldn’t you want to have more force applied to the clutch packs since there will be greater friction at lower speeds?

@phillip_mcguinness7025

Жыл бұрын

@@VincentAdultmanbearpig hence the spring between the spider gears so it's never completely open, maybe 85 90 percent open going straight down the road.

Super educational bro, I appreciate this becuase it helps me understand in a much simpler way than most other videos

@AustinCoulson

3 жыл бұрын

I appreciate that!

Great to see a real measurement done live like this. As others pointed out, the clutch torque increases as the ratio of torques coming in from the wheels (from brakes or road reaction torques) climb. What you were really measuring there was the preload torque, the minimum locking torque the diff will provide. Very cool to see, thanks!

It was very important your video to me , because I have 2 hilux’s , one with LSD 2008 and other one with out LSD 2002 , recently found the difference and I thought it’s a issue and almost going to garage for repair , so Thanks to you now I know it’s normal 😊

Limited slips carriers have a ramp like cam action to place even more squeezing pressure to either side of the clutch packs when slip occurs to increase the locking effect. The test you did is still a decent one for determining the overall condition.

Thanks Austin.Its an awesome video.Dont worry about sylishly editing.Content matters the most.

WOw great video man, very simple and incredible valuable info

Nice video. Perfectly explains the process.

I just watched something earlier that explains how when under drive there is tangential force on the bevel gears due to how they work which engages them more and locks things up more on the side that is on the surface with more grip. It was very interesting

@wildestcowboy2668

2 жыл бұрын

But do it really work? I be having a 96 xj and I is getting ripped off at da shops. I wish I didn't stay in Memphis bone, wish I knew a country boy, he be able to fix it!

I think the break free force is great when the drivetrain is pushing because the spider gears a cone shape and they then push on the clutch packs harder

Good video. Would love to see one on the G80.

Thanks! Def like seeing the real thing in action next to eachother

Wow! Thanks Dude! We owe you a beer!!

Your explaination was clear

You've got an interesting channel, I'll sub and follow along. Quick question about limited slip diff. My 98 Dodge 1500 has a limited slip described on the VIN and build sheet, and I'm the original owner. However wheels move opposite when I spin them on a lift, and when I remove the pumpkin it looks like a normal diff, no obvious slip plates or springs, no tag. The dealer repair manual is a little confusing, not sure which diff I have. Is it a safe bet the build sheet was wrong, after all?

@AustinCoulson

3 жыл бұрын

Thanks for the sub! I have seen issues with VIN and Build sheets being wrong, There should be a metal tag on the diff cover that states the gear ratio and if there is a locker or LS. It sure sounds like you have an open diff.

Interesting and educational, nice one

That was pretty cool

This video is very good.. congrats

I wish I could stay with you and learn all things about cars on the other hand serving you as an assistant.

Thanks ... but since these are from the 70's can the clutch pack be worn and not as effective? Also when under drive load the gear force will compress the clutch pack and increase the fiction thus a torque increase. Note the sound recording it just a bit low.

@AustinCoulson

3 жыл бұрын

Great point!

I like this video, it explained why my vehicle is weak on slippery surface. If I have the money I will replace the differential with a limited slip differential.

@AustinCoulson

3 жыл бұрын

I prefer spartan for off road lockers, and any clutch or geared unit for a LSD. 500 is about right to pay for a good LSD and new gears should be around 200 if you do those as well, and double that amount if someone else installs them

@ToyotaLEngine

3 жыл бұрын

@@AustinCoulson That's a great amount for a tight budget, I think I'll take the risk to do it. Would it not need housing replacement, only the gear inside?

What calculation we should consider for Preloaded spring?

Interesting experiment

Great video! Thanks!

I don't understand how LSD works until I saw this. Thank you

Great video.

Smart ide, thanks for sharing

Thank you for good explain!

Brilliant demo. They say that to easily tell a limited slip you lift the vehicle, spin one tire and watch what the other does. If LSD, the other tire rotates the 'same' way (both trying to drive forward), if conventional it moves opposite because the transmission in park resists transfer of energy to the prop shaft. Makes sense. However I was surprised to see that in my Dodge Ram, with a build sheet describing an LSD, the tires move opposite to each other. I had the diff cover off and didn't see clutch plates, but evidently in the Ram they can be hard to see. Do you think the build sheet is wrong? Have you seen limited slip differentials that don't follow that classic rule?

@AustinCoulson

4 жыл бұрын

If you jack up the rear and it's an open diff, you are correct that you can easily spin one tire and the other goes in the opposite direction. It gets trickier of it's a LSD because there are many types and they can be worn or broken. A GM Gov-loc relies on a little clip that commonly breaks so they can appear open but in fact have a broken clip floating around in the oil waiting to break stuff. If it's a stock Ford limited slip, they can break away under as little as 5lbs of force so they can appear to be open when it's a weak LSD. I test it in neutral as a weak LSD should still have more grip than a neutral driveshaft. I'm unsure on the Dodges, but I think they commonly used Dana axles and I don't know what LSD they would have got. It will be easy to tell if you open up the diff and take a look. Will give you an excuse to change the often neglected fluid. Just make sure if you do that and it has an LSD then make sure what fluid it required. Some require a friction modifier.

@spelunkerd

4 жыл бұрын

@@AustinCoulson Thanks, man.

Great vid

Hello , nice video. Never saw something explained practically. Two questions , does 40 lbf makes engage the LSD or dissengage it. Also i have DANA 44 axle with LSD, so does it have same function?

@AustinCoulson

2 жыл бұрын

Good questions; the 40 lb ft is required to break the axle shafts free of eachother, like when you make a turn and the outside tire spins faster than the inside tire. The LSDs on the Dana 44 has the same function of trying to keep the axles connected, but there are a ton of different style LSDs that came in Dana 44's over the years s and they all attempt to accomplish the same thing different ways. I have a video where I install a limited slip in a Ford 9 inch and one where I install a Spartan locker in a Ford 8.8 if you want to see other styles.

Very cool video

GOAT video

Do they make conversion kits for Mitsubishi Adventure.I live in Southeast Asia and drive an Adventure and my only problem that I have with the car is the open differential.I’m always getting stuck 😂

Very good video sir

thanks very informative

Really interesting!

Great info

Nice vid and practical demonstration. Needs better audio. Learning is a good thing! Thanks for sharing.

@AustinCoulson

3 жыл бұрын

I agree. This was one of my first videos and I didn't know how to equalize the audio. I almost took it down, but people seem to still be learning from it.

@bustjanzupan1074

4 ай бұрын

@@AustinCoulson Thank you very much 4 the video. So, if i saw correctly on the slow-motion, the resistance got up to 4.0(x) , which means about 5,4 Newton.meters here in Europe ? Thank you .

Great video, Is it true you will wreck a limited slip differental using a donut temporary spare tire for a long time, by heating it up But, do zero damage to a open differential if you did the same? Thanks

@AustinCoulson

6 ай бұрын

Different tire sizes will destroy a locker quite fast, limited slip diffs can handle different sized tires for a while but it can wear them out limiting their effectiveness later and an open diff will do just fine with tires of different sizes

Fascinating to see the real differentials after studying some 3D CAD animations on another channel. Thank you, and I'll just mention too that your audio levels on this vid are very, very low!

@AustinCoulson

3 жыл бұрын

I had zero clue how to adjust audio levels back then. I cringe at these old videos

@gyrogearloose1345

3 жыл бұрын

@@AustinCoulson - no problema señor. Cheers!

Good video

Like the info thanks.

WOW! Is that one of those Factory Five Work benches back there? I converted a 2004 Chevrolet Express 3500 shuttle bus into a camper. I will be using in snow, beach sand and desert sand. I was in snow last week and the right wheels sunk of the road into a snow bank and the right tires just spun and they are all I had to get myself out. Those Stupid left ones just sat there and laughed at me. So, if I want good traction in those conditions, I would need a differential that would switch to the tires with the better traction but I know for a fact I don't want the axles to lock because if they are both spinning, the vehicle will just slide off the road as neither side has tires in control. I always want one side rolling while the other is digging in. So what type do I need? What is it called? Limited Slip or Posi traction or what? Thanks!

@AustinCoulson

3 жыл бұрын

Any limited slip will get you what you need, you'll just want to stay away from a full locker. Your cheapest bet would be to source a factory limited slip gm axle from a junk yard and swap the entire axle. If you are careful enough, you may be able to find one with a better gear ratio for your rig as well. If you are installing an aftermarket one, the auburn or eaton units are very nice, but you will need to pull the entire carrier out so it's a decent amount of work. I did a how-to on installing gears and a limited slip in a ford 9-inch about a year ago if you scroll back through my vids you can give it a look and see if you are up to the challenge.

@JB91710

3 жыл бұрын

@@AustinCoulson What gear ratio would you recommend for highway gas mileage in my bus? Oh and thanks for the info. A junk yard was my route of choice.

@AustinCoulson

3 жыл бұрын

@@JB91710 depends on what engine you have and what the weight is. I'd guess 3.27 is about right for the best all around set up, and that very well might be what's in there.

@JB91710

3 жыл бұрын

@@AustinCoulson It's a 6L gas engine and its the smallest shuttle bus made.

@AustinCoulson

3 жыл бұрын

@@JB91710 do you know what axle code it has? Should be labeled on the door jam as well as on the axle tag

I found my way here after I did some thinking after watching videos of people starting a car by jacking up a wheel, winding a rope around the wheel and pulling the rope to start the car. In top gear (1 to 1) and 4 to 1 diff, if the diff was welded locked, the motor would need to turn 4 times for every time the wheel is turned. But with an open diff, the motor would only need to turn 2 times for every time the jacked wheel turns which would make it easier. But with a limited slip diff it is more complicated and I don't know if 1 wheel or both wheels would need to be jacked up.

You're out here still reading/saving(hearting?) comments when the video was posted a year ago. +1 sub for your activity

@AustinCoulson

3 жыл бұрын

If you're taking the time to watch my videos and send nice comments, that's the least I can do

Soooo my truck has a LSD and I want to get sideways.. Do i just purchase a new rear end or what are my options?

@AustinCoulson

3 жыл бұрын

You should be able to get sideways with an LSD. Some of the factory ones aren't strong, like the Chevy Gov-loc or an older Ford Trac-loc. You can change the gears and locker in your existing rear end; Here is a video of me putting a spartan locker in a ford 8.8: kzread.info/dash/bejne/qKhs19l-fqzPd7Q.html Here is a video of me putting in new gears and locker in a Ford 9in: kzread.info/dash/bejne/dJV_ypujfdSeiKw.html

@ghidraa9340

3 жыл бұрын

Austin Coulson thanks for the response. I just realized I’m suffering from Bad wheel hop. I suppose upgrading my suspension with full coil overs Sways and 4 link rear will eliminate this?

Voice overs prevent confusion.

It only tests the initial torque. When an engine is running the casing inner spider gears will push out the side gears into the clutch packs and the friction is much higher. The amount can be modified by the ramp angle.

@AustinCoulson

Жыл бұрын

Correct. I just wanted to see the initial breakaway torque. I wish I could test the breakaway torque under engine load, but I have no idea how that could be done

Thanks sir nice

In case you're still listening. I have an aftermarket limited slip in my truck and it makes a popping sound as I turn but never while going straight. Not sure if this is natural or not.

@AustinCoulson

2 жыл бұрын

You likely have a locker, not a limited slip. I made a video where I installed a spartan locker in an 8.8, here is the link: kzread.info/dash/bejne/qKhs19l-fqzPd7Q.html If you skip to the end I drive it with the camera underneath the truck and you can hear the popping clearly when it turns. Its the locker releasing while turning and it's totally normal

@joetroutt7425

2 жыл бұрын

@@AustinCoulson thanks for the info and link. If you could can you tell me what the purpose of a locker is for.

@AustinCoulson

2 жыл бұрын

@@joetroutt7425 It's there to improve traction. Without a locker, whichever tire has less traction will just spin and spin. Limited slips are preferred for the street because they give you better traction without being noisy. Lockers give even better traction, but are noisy and aren't as smooth on the street.

@joetroutt7425

2 жыл бұрын

@@AustinCoulson yeah, I told the shop I wanted a limited slip put in and I guess they got me a locker instead. Probably charged me for a limited slip though. I also went from 3:73 gears to 3:90. Anyhow, I'm just glad it's not something wrong.

@AustinCoulson

2 жыл бұрын

@@joetroutt7425 What model Vehicle?

I just checked on my jeep and when I spin 1 tire the opposite tire doesn't move. What's this mean?

@carlosherrera8541

3 жыл бұрын

Your in big trouble now....lol jk. Just probably means you dont have a limited slip gear

@ADAPTATION7

3 жыл бұрын

@@carlosherrera8541 Of all vehicles that should have a limited slip gear (and even, a locking dif.) how is that possible and especially on a Jeep?

If you had brand new clutches and steels in that rear end, it would obviously be a higher number. From what I’ve read, limited slip clutches only last about 50k miles.

Are there both Chevy reared?

@AustinCoulson

4 жыл бұрын

Yes, both 10 bolts from a 75 and a 79 Camaro

@crackerjack8115

4 жыл бұрын

Thanks. Helped determine what diff was in my 94 Silverado.so a 8.5inch 10bolt open diff. So no additives needed. And 80w90 gear oil

@AustinCoulson

4 жыл бұрын

@@crackerjack8115 it's a great diff. Underrated. I use mobile one 75-90 or Royal purple.

@crackerjack8115

4 жыл бұрын

@@AustinCoulson thanks again sir. I was wondering about valvoline those where the other two options.

@AustinCoulson

4 жыл бұрын

@@crackerjack8115 Valvoline is great, too. So is the Castrol rear end oil. I go synthetic because of the insane heat we get in AZ

I took my truck to the mechanic last week he said that my diff was bad ,he want to put a new diff carrier on it , but i would like if i can buy one from the junk yard! My truck is a 2005 dodge ram 1500, i dont know if i can got one from 2010 ,that will fit on my truck. What do you think?

@AustinCoulson

3 жыл бұрын

I don't know off the top of my head. I usually go to wikipedia to see what years the changes occurred. Junk yards are great parts for rear ends because the failure rate is so low, the old ones are usually good for another 200k miles

@yamahar1castillo923

3 жыл бұрын

@@AustinCoulson thanks i just sold the truck last week

That torque number is a great way to start. At first glance 40# seems small. So I would say use that number anyway. So if the rack pinion gear set is 4.11 to the rear wheels than the actual resistance at the driveshaft is the inverse at .2433 so>>>40/.2133=164 ft LBS @driveshaft. Likely more to it than that. Comments please.

@snrrub

Жыл бұрын

The torque required to overcome the friction of the clutch packs isn't constant, it's related to how much torque is applied at the driveshaft. So this 40 ft-lb is actually the minimum required when the torque a the shaft is zero. As shaft torque increases, an axial force transmitted through the spider gears in the diff squeeze the clutches together and increase the axle torque required to break them free.

I 100% recommend Lincoln Lock if your into saving $........

good video, just the sound that needs to be higher.

@AustinCoulson

3 жыл бұрын

Thanks. I didn't know how to equalize audio when I made this

But it would seem a open rear has less stress on the transmission

@AustinCoulson

2 жыл бұрын

True. Open diffs are also less noisy, and can be better in rain/snow depending on the vehicle

Ma men!

thank you for not wearing a long sleeves shirt. we have to show the world that tattooee people are not stupid, that they are very smart in little things of life. it's in the bigger and more important things of life that we are challenged

@AustinCoulson

3 жыл бұрын

lol

It should be illegal to sell an open diff. Anyone that's ever been stuck in mud, sand, snow knows this. It really only costs about $150 for manufacturers to accomplish this. LSD is the best vehicle upgrade I've ever done. I live in the high snowy CO mountains, and I now rarely need to engage 4WD.

get a lapel mic coz good sound is very essential

@AustinCoulson

2 жыл бұрын

Oh yea, this is an old video, my audio was terrible

Those clutches or that spring must be worn, because that doesn't seem like it would be enough do anything. 30-40 ft-lbs is nothing for an axle.

Thats interesting but your volume was low

@AustinCoulson

3 жыл бұрын

Oh yea, this was one of my first videos. The audio is terrible

i see him... but i cant hear him

1:33 You just HAD to make sure to get that squeal in there. Unnecessary.

What!

Hallo

Audio could be improved.

@AustinCoulson

2 жыл бұрын

Totally. I filmed this years ago before I knew how to equalize audio

cant hear !

@AustinCoulson

3 жыл бұрын

Sorry, I made this video ages ago before I learned how to edit.

Subs helped but i couldn't hear u

@AustinCoulson

Жыл бұрын

This was one of my first videos. I didn't know how to edit or adjust audio.

Is not dengeres on the corner

You need to talk louder cannot hear you

Sounds quality sucks...very low!