Working of Limited Slip Differential

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10 жыл бұрын

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Working of Clutch pack LSD (Pressure ring based) is well explained with help of animation in this video. 1 way, 1.5 way and 2 way type are the different kinds of clutch pack LSD available. This video also explains uses of each type and distinguishes between each other.
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@tootsrr1 3 жыл бұрын

This ts the Best Video that explains the LSD the Only Video to clearly show the Casings the the Clutches are housed in after wasting time watching 6 other Videos

@kryptikkk777 9 жыл бұрын

this is amazing. I also love how you give some time between each "stage" for us to comprehend the given info.

@freefall0483 6 жыл бұрын

A big hint for offroaders with this type of differential, if you are in a situation of zero traction on one wheel, these differentials are useless unless there is a lot of pre load. To overcome this, application of the hand brake will increse the torque load to the diff centre and make it lock. This only works if your hand brake operates directly on the rear brakes. If you have a handbrake that operates on the transmission (ie. Nissan Patrol) you select 1st gear low range and apply pressure to the brake pedal. You will unfortunately have braking on all 4 wheels but the torque of 1st low will be enough to overcome the braking force. Often a short stab of the brakes will be enough to transmit torque to the wheel with traction. As long as the torque application is continued, the diff will maintain lock. I have personally been in many situations where I have had to maintain constant pressure on the hand brake due to wheels being completely off the ground due to severe terrain. In this situation you must be mindful to manage brake temperature as faded brakes on the side of a mountain can be a severe problem. Especially rear brake fade as you will be calling on them to arrest any rearwards motion if you need to stop your climb or to stop the vehicle if it begins rolling back for any reason.

@Colin1342 6 жыл бұрын

I too have use the hand brake in a car with an open diff. It provides just enough pre-load to regain forward movement. Wouldn't individual brake pedals be good - oh wait manufactures are already doing this with traction control. Old tractors had individual brakes to aid tight turns but were also useful when one wheel was loosing traction. I'm not sure about modern tractors, maybe they have enough smarts to compensate. Cheers.

@enriqueromeumartinez8880 2 жыл бұрын

So this type of differential only allows different speed on wheels if there is no torque? If you are full throttle on a corner, it will be like a welded differential?

@911gpd 8 жыл бұрын

God some engineers are really good. This is simply genius. Thank you also for the great explanation ;)

@TralfazConstruction 2 жыл бұрын

It really takes a gifted mind to devise such intricate but ultimately straightforward machines.

@jubuttib 7 жыл бұрын

Probably this has been mentioned somewhere in the comments already, but KZfaq doesn't make it very easy to check. There's a big mistake in this explanation, and it relates to the torque/power delivered to the left and right wheel: At the beginning the video says that with an open diff "high power" is going to the wheel on the low grip surface and "low power" is going to the wheel on the high grip surface. This is wrong, an open diff will ALWAYS distribute the torque evenly between both axles (plus/minus some mechanical inaccuracies since we're not in a perfect world). The diff isn't sending more torque/power to the side with less grip, the side with less grip is limiting the torque sent to the side with more grip. The maximum torque that can be put down on the ground with an open diff is roughly 2 times the tractive capability of the side with less grip. An engine can only put out torque that's used for something (conservation of energy and all), so the side with less grip acts as the limiter, any attempted extra torque will be spent on increasing the rpm of the engine and the wheel that's spinning, until you hit the limiter (at which point the engine cuts off and doesn't provide torque). Hence the car can't move forwards. When locking is introduced (be it via Salisbury type LSD, Torsen style unit, viscous LSD or whatever, even a solid, spooled diff) the situation changes. More locking enables you to send MORE torque/power to the side with more grip. Not "an equal amount of torque will be sent to the right and left wheels" as the video says at around 2:45. The locking torque is what enables that extra torque/power to be sent to the side with more grip. As an extreme example, a car with a solid, spooled diff (i.e. one that allows no differentiation) in a situation where one wheel is completely off the ground wouldn't be sending an equal amount of torque to both wheels, it'd essentially be sending 100% of the torque to the only wheel that's touching the ground. Fantastic video for explaining how the system works, but lacking in describing how the forces in it actually behave. =)

@Colin1342 6 жыл бұрын

You are entirely correct. Differentials and power distribution is a subject only a few understand correctly.

@zxvadcsfbh 6 жыл бұрын

LSD make car go sideways. Problem?

@TarenGarond 5 жыл бұрын

You are incorrect! Power and torque is not the same... In this case power is RPM x torque, so higher power is indeed going to the wheel with lower grip! Edit : To clarify, this comment is about what he said regarding the open diff animation in the beginning of the video.

@ZiinokZzHD 5 жыл бұрын

Thanks, I wish I had seen your comment earlier.

@gofer9156 5 жыл бұрын

"An engine can only put out torque that's used for something" Incorrect! An electric motor outputs torque at 0 rpm. Torque in motion makes power.

@WarriorsPhoto Жыл бұрын

Great videos on the devices. I’m happy to use them on a performance oriented vehicle. They do help maintain traction. 😊

@jaypaans3471 3 жыл бұрын

Using friction to overcome the problem that is a lack of friction. Way tha go.

@KTMcaptain 3 жыл бұрын

The cam requires drive torque to actuate... that's an important aspect. If you're on ice spinning one wheel, the carrier will just spin and the spider gears will rotate. The spinning wheel needs traction to resist the carrier and develop torque that will force the cam pin to actuate the clutch packs. . It's a great system that really only engages when needed. Spider gears transfer torque to the outputs, so the mechanism will lockup proportionally to the amount of torque flowing through it. So the harder you drive the wheels the harder it locks up. Very similar to a torsen type that creates axial thrust in the helical gears proportional to the torque flow, except this system is far more tunable, and can be preloaded to always work at a minimal level where a torsen will just act as an open diff on ice.

@MrCh0o 2 жыл бұрын

I guess if you stop spinning the wheel and then slam the acceleration, the inertia of the half-axle and wheel + whatever miniscule traction you might still be getting on ice might be enough to lock the differential?

@KTMcaptain 2 жыл бұрын

@@MrCh0o well, it would very do very little and you’re accelerating that wheel at 2x the normal speed. Typically these are preloaded some to prevent that and you can always tap the brake or lightly pull the parking brake to get more torque through it. . I was just pointing out that these are better on road vs off road.

@n.lyndley.9889 Жыл бұрын

Indeed - this is something very few ‘experts’ actually understand properly. 👏

@singhsandhu8676 6 жыл бұрын

A very good explanation. Hats off for the animation . Good work keep it up .

@Cape1984 2 жыл бұрын

Amazing explanation! Thanks for this unvaluable info!

3 жыл бұрын

best vid on subject I´ve found so far

@jorgegomezmonge5344 8 жыл бұрын

Love it great clear explanation and learning tool

@mamemanzomo7449 6 жыл бұрын

thanks! this was I was looking for. i'm learning how to setup a car in Project Cars 2. There you can change the angles of the 2-way cam groove, and it's hard to find the right setup for coasting and acceleration :-)

@grins047 9 жыл бұрын

Fantastic animation, thank you.

@BiscuitsnTea 3 жыл бұрын

well done, came from engineering explained ,he helped but lack of visual aids made it hard to comprehend in practice

@BrianKongXD 6 жыл бұрын

Holy Fucking Cow now I understand the whole thing. Mind blown. Thanks LE!

@Trades46 9 жыл бұрын

Highly informative, thank-you. I used to play Gran Turismo and they don't do that well of a job describing the 1, 2 and 1.5 way diff. Now I know though.

@WireSniffer 8 жыл бұрын

I have the Apex Magazine to download, it explains clearly, think of it like this, 1 way is only throttle lock, 1.5 way is less locking pressure on the decelerating side. 2.0 way is like equal locking on both throttle and brake.

@steamdriver6964 7 жыл бұрын

that's because its a video game smh

@NateSceneTV 4 жыл бұрын

Let your kids play with Lego technic, everyone. Lego Technic teaches basic concepts like these. They have everything from clutches, differentials and all of that. I learned a lot playing with those as a kid

@minkodima 9 жыл бұрын

Cool vid with cool explanation

@WheatleyOS 7 жыл бұрын

Great video on LSD :)))

@mirkodibenedetto3155 3 жыл бұрын

THANK YOU SO MUCH, I NEEDED THIS FOR AN EXAM

@asheytattoo 3 жыл бұрын

Same

@mase886 9 жыл бұрын

in this video it is underscored the fact that spider gears are NOT directly connected to the case(instead there's an internal slot where the spider can move under torque, within a certain ramp surface) while in your other video it was shown an LSD, pre loaded with a spring, where the spider gear was indeed connected to the diff case. if I understand correctly, is this because the latter design is a 1-way only type ?

@RandiEriko 2 жыл бұрын

nice explanation!

@kuma982 9 жыл бұрын

good video, had to sub!

@thegingercarguy 3 жыл бұрын

Wow, and I thought this was one of the most complicated machining in a car. Nice!

@ma-rz9rd 6 жыл бұрын

a damn fine piece of engineering

@davidrhelmick72 6 жыл бұрын

makes me proud to be an American

@pauloyoshizaki2103 6 жыл бұрын

Diferencial Revolucinario. Ótimo em Pistas Escorregadias Tracao difereciado em CADA RODAS ; ÓTIMO : OK………OK………………………OK…………………………………ÓTIMO ………………………………………………………………………………………………………………………

@mattiasandersson3444 6 жыл бұрын

Nowadays the torque-sensing gear biased lsds are most common.The plated discs lsd are almost only used by competion cars like rally and track racing, due to more consistent handling.

@steven3461 6 жыл бұрын

Watching this makes me realize how dumb I am.

@shivamkale6783 3 жыл бұрын

same here bro

@areufkingkiddingme Жыл бұрын

Same here and I’m a doctor how do they even come up with this stuff

@Definitely_Not_Sheev_Palpatine Жыл бұрын

Same. Sadly, there's a lot of prerequisite knowledge required in order to understand these videos. They are great for mechanical engineering students, but not so much for the average person who just wants to understand how it works, and why it works that way.

@changuito2024 20 күн бұрын

@@Definitely_Not_Sheev_PalpatineI learned so much from continuously watching videos. I encourage you to keep trying!

@dariohernanmas1879 9 жыл бұрын

good video!!!

@claudev.k2 9 ай бұрын

These type of diffs often require a very specific oil or additive to work properly. Wrong oil can lead to noises while cornering and massive wear on the clutch packs.

@kikikokokukumalu 4 жыл бұрын

Why are u not one of those top paid youtubers

@burntnugget1854 3 жыл бұрын

thank youuuu

@CondensedComments 6 жыл бұрын

0:03 It says dead wheel. Ok everyone is saying torque is available to both wheels and, at 0:03, it says 'good traction' underneath a spinning wheel. So wouldn't the torque available to both wheels be enough to move the car (in the correct gear, or is the issue not having one large enough) through the one wheel (or should the animation not be spinning?)?

@WireSniffer 10 жыл бұрын

Awesome at last, thank you LE. How do you tune initial torque , preload, breakaway etc. Is it purely for those not on not off throttle moments ?

@Lesics 10 жыл бұрын

To fine tune the design parameters of an LSD you have to rely on a detailed Simulink model or on heavy experimentation. :)

@WireSniffer 10 жыл бұрын

Learn Engineering sorry I didn't make my self clear, what I actually am trying to say is what is initial torque actually for. Am I right in saying that is for the static pressure eg. Racing scenario, where you are off the brakes but just before you get back on throttle, to stabilize the car through the corner. I understand that Deccel is for braking and Accel is for well Accel on throttle coming out, so initial torque preload must be for the coasting and also to help aid in speed smoothness of LSD effect. What I mean is what is it actually doing by lowering or raising the IT. Preload ?

@Lesics 10 жыл бұрын

ThePres05 Hope you are asking about the pre-load springs. If there were no pre-load springs present (zero pre-load), the clutch pack will be activated only during high throttling. By giving some amount of pre-load the amount of throttling required for clutch activation can be reduced. Apart from this pre-load springs help in securing the position of the spider-shaft system in the cam grooves by pushing the pressure rings always.

@WireSniffer 10 жыл бұрын

Learn Engineering +Learn Engineering Interesting, thank you, but isn't this also know as initial breakaway torque. as quoted from www.ppi-ats.com/LSD/LSD_basics.html "The initial torque (break away torque) is a pre-load torque on a LSD. Up to that torque load, the LSD locks the differential even without any rotational difference between the wheels. The initial torque and the cam angle on the cam rings determine the responsiveness of the LSD on the driver's steering and throttle inputs. The higher the initial torque and the higher the cam angle, the more responsive an LSD becomes. However, too much initial torque makes a vehicle extremely hard to turn and very high cam angle affect the vehicle's smoothness. A good performance LSD achieves an excellent balance of those two important factors"

@WireSniffer 10 жыл бұрын

www.gordon-glasgow.org/lsdtech.html this is an excellent article about breakaway pressure , initial torque, preload etc , amongst other bits of info, in case anyone wants to learn more.

@hasanturgut4269 2 жыл бұрын

Muratcan topal!once elle lds falan sonr bakAriz.bilgilrn için çok teşekkürler bu arada:)

@brendanzio 2 жыл бұрын

so what do the preload springs do? is that to minimize the amount of play in the clutches while they're unloaded but are still able to compress when the clutches are loaded and apply?

@Mark_badas Жыл бұрын

Yes

@brent07 3 жыл бұрын

Thank you Learn Engineering for the comprehensive video about LSD, I Still don't get it, My neurons are fighting now for survival.

@B16WGZ 3 жыл бұрын

Let me see if I understand this correctly. Let's consider a 1-way LSD. While coasting or engine braking, the diff behaves as if it were open. Or rather almost open, since there's a slight preload in the plates. This means that in a corner the wheels can spin at different speeds by simply overcoming the small amount of pressure in the plates that's induced by the preload spring. The diff only locks under acceleration. How "locked" the diff is is a function of how easy the plates can slip. The harder the acceleration, the higher the pressure in the plates will be, and the less they will be able to slip. Given enough input torque, the plates will be pressed against one another hard enough to prevent any slip at all, effectively achieving 100% lock. Is this correct? But here's something I don't get. If the extent of the locking effect is just a function of input torque alone, then what happens if you accelerate in a corner? How can you drive smoothly round a corner while keeping your foot down? OK, under light acceleration there may not be enough pressure in the plates, and they may slip just enough to allow the wheels to negotiate the corner. But if you accelerate just a bit too hard, you won't be able to drive through that corner without slipping a wheel. What am I missing?

@kubica811 2 жыл бұрын

From a practical view, that is exactly the case with an LSD. If you put the power down during the turn the LSD is gonna make both wheels spin and you are gonna lose traction. That is why LSD is more preferable if you want to have fun with the car, and do some drifts and powerslides. The slide is also much more controllable and smoother as you are in control of both wheels spinning in oppose to only one wheel, as you have in an open diff.

@richjageman3976 2 жыл бұрын

I understand how it is supposed to work, your video does an excellent job on filling in any gaps. However EVERY limited slip equipped car I have seen that has 1 tire slipping never had the opposite tire start rotating. Brand new to a few decades old vehicles of various brands. My question is at what speed or time or whatever does the other tire start getting power since I have never seen it actually happen in real life?

@skeetersaurus6249 Жыл бұрын

If you jack up the vehicle in question, and while left-and-right axles are suspended in free-hang, spin an axle. If the opposing axle spins in the opposite direction, you have an 'open carrier', not a clutched LSD. There are, of course, lockers and differentials of such nature, but they are very pricey, and normally on a car if that part has intentionally been replaced. The reason for the opposing axle turning in the opposite direction to torque input (assuming vehicle is in PARK, not NEUTRAL) is that an open carrier only has spider gears to transmit torque to that shaft. The confusion started in the 1960's, when 'car review writers' (who had 1/10th the knowledge they thought they did) started referring to open carrier assemblies as 'limited slip'...so they could push the individual car companies' patented types of LSD (GM: Posi-traction, Dodge: Sure-Grip, etc.)...their attempt to 'push an upgrade feature' then, has led to still-lingering 'naming issues' now! As for 'how/why does an LSD function'...the axles are usually in 'open' condition (as you go down the road at a steady-speed). This maximizes fuel consumption. (I've owned many LSD-equipped cars in my lifetime, and let me tell you, have one fail in the 'closed' or 'locked' position, you'll see 50% or more reduction in your gas mileage!) A 'solid axle' is NOT desirable in ANY application other than straight lines...so, good for straight-aways at Nuremburgring...not so good for those corners! MOST 'street use' (OEM-factory) LSD's are set somewhere between 70-and-80 ft.lbs. torque. This keeps them 'open' for low-speed (parking lot) cornering, while locking during straight acceleration. DISCLAIMER: I am a retired Director of Engineering in 'Chassis Dynamics' at a major corporation...and while I can tell you MOST about the 'Big 3's' 1960's/70's set-ups and applications, can't really speak to modern advancements in LSD.

@cromas 8 жыл бұрын

This animation is so great but the language is kind of awkward some times. Why are all the articles missing?

@evanmastermind 7 жыл бұрын

It sounds like it was translated form chinese or something lol

@harlananelson 6 жыл бұрын

apex128 Yes, the text was written by someone whose first language wasn't English. Most likely the voice is computer generated otherwise the narrator would have objected. They confused the definite article with the indefinite articles. They also mixed up singular and plural possessive adjectives.

@kritarthtripathi7157 2 жыл бұрын

Damnn ... This one is complicated than standard differential

@munkhboldkhadbaatar2260 3 жыл бұрын

Good

@tarekdawabi2334 9 жыл бұрын

super like :)

@usdjxavi 6 жыл бұрын

I love lsd technology

@josevictorvillegascardenas5493 8 жыл бұрын

Hi, I'm from Mexico and I do not speak English, I'm using google translator, and on this occasion youtube do not gives me the option of putting subtitles in English: your video is very interesting, can you make this video in Spanish? A long time ago I wanted to know how this type of differential works and have noticed that each manufacturer calls it differently and there are also different designs for the same purpose, including Mercedez-Benz factory a "electric or computer-controlled" differential. Most of the videos are in English and that is the "problem" for those who do not speak English. I hope your answer soon, and a greeting.

@joesmith2654 8 жыл бұрын

+jose victor villegas cardenas Ay Jose , pero joder hermano. Como que no puedes escribir arriba en el search " como funciona un diferencial? " , hazlo y te va a mostrar muchisimos videos en espanol de lo mismo. Pero te sugiero que aprendas ingles pq el ingles es el idioma de las matematicas y las ciencias , y todos los manuales de mantenimiento estan escritos en ingles. Luego los trasladan al espanol y no se entiende nada , pq en espanol muchas veces hay palabras que de acuerdo de donde seas , significan cosas completamente diferentes. Superate aprendiendo ingles y tendras una herramienta mejor para toda la vida. Los diferentes diferenciales hacen el mismo trabajo , pero de formas y con mecanismos diferentes.

@brunoignaciogi 7 жыл бұрын

"Ay Jose , pero joder hermano" jajajajajajaja (me hiciste reir)

@joesmith2654 7 жыл бұрын

brunoignaciogi Busca a calico electronico en la red,.. te vas a reir con el joder hermano..jajaj

@gonzar11 6 жыл бұрын

jose victor villegas cardenas como dicen los hermanos españoles por aquí, no queda otra que aprender inglés, todo en todo el mundo si no está en inglés está en alemán, pero una mayor cantidad en inglés. Si lo Aprendes vas a valer mucho más para una compañía y vas a poder moverte mejor por el mundo. Saludos desde Guadalajara

@MrCube17 8 жыл бұрын

I get it!!

@madankisanpradhan4287 2 жыл бұрын

I have a doubt... how this mechanism would differentiate between 1.the right wheel is slipped due to water and 2.the car is taking a curve in the left direction in which right side wheel have the higher velocity?..if in the 2nd case this mechanism will work then..the car may skid in curve path😑

@krutoyinfo 4 жыл бұрын

I like LSD & met

@easezgin 8 жыл бұрын

Ahhhhhhhhh I love cars and I understand jack shit about this mechanics.

@user-ro2nq7gp9l 2 жыл бұрын

"But you didn have to cuuut me ooofff..."

@diyscrub3220 6 жыл бұрын

So I know how a LSD works now but how do you activate it so the left and right wheels turn at the same speed? It obviously isn't always activated... or else that would be a welded diff.

@SoftBreadSoft 3 жыл бұрын

It locks based on the ramp size and ramp angle under acceleration and deceleration. A sharper angle and it locks sooner. Closer angle and it locks later. This video is better to explain application m.kzfaq.info/get/bejne/mcuEaZSdzKu2nXU.html

@SoftBreadSoft 3 жыл бұрын

(Decel lock depends on the style of diff)

@AVERYhornyMrDinosaur 9 жыл бұрын

we ALL know what the PREFERED, LSD technology is..

@phongnguyen-pm6wk 5 жыл бұрын

hi you

@user-vy5zv4sy5d 2 жыл бұрын

@@phongnguyen-pm6wkف ب س١ةو . . كرمش

@atharvapallikulam9743 Жыл бұрын

2 way ... I'm not a normie right?

@nithinvenugopal99 8 жыл бұрын

how will it negotiate a turn while its in the locked condition as in the locked state both axles act as a single unit

@WireSniffer 8 жыл бұрын

this is determined by the ramp angle and therefore how much locking you want during throttle or brake

@mateiberatco500 7 жыл бұрын

If the clutch is locked during a turn, then the inside wheel is slipping, therefore it does not matter if it's slipping very fast or just slightly faster. Also, the locking is not 100% (like single-axle carts). The faster it slips, the more locking it gets. But if no slipping occurs, it's identical to an open diff (well, it may have a slight locking to avoid shocks). In other words, it has no safety downsides (you do have more components that wear down).

@celcum6847 6 жыл бұрын

Thats exactly whats in my lego trucks

@iliasasdf 10 жыл бұрын

LSD Spider Gears Not a good mix.

@SR-fx5sm 6 жыл бұрын

lol you dont get it..

@jjjudd960 6 жыл бұрын

iliasasdf yee lol

@szymonpszczoka2678 5 жыл бұрын

@Ben Passlow Dont take acid with spider gears around it could be bad trip.

@WireSniffer 3 жыл бұрын

@Michael Yanagita In motorsports, a mechanical clutch type LSD is superior.

@polini22 7 жыл бұрын

why do you want to lock the differential during deceleration?

@stuarthunter2923 7 жыл бұрын

it helps dramatically in cornering and in uneven surfaces like off-roading in mud, sand or snow

@aharrington080611 6 жыл бұрын

It would increased the probability of oversteer while braking hard. It's a safety issue, especially if braking hard on a corner.

@n.lyndley.9889 Жыл бұрын

@@aharrington080611 Oversteer - during straight line braking? Braking hard in a corner???

@De19thKingJulion 7 жыл бұрын

So this is a torque sensing LSD? It locks up in response to increases in torque to the differential, I see. The word at 2:17 - was it "tangentral? what does it mean?

@chevota400 7 жыл бұрын

I assumed all LSD's/Posi's are torque sensing these days. I remember seeing one that wasn't but it was made before 1970. The tangential mention was about how those two case halves spread apart thanks to the V shape opening for the spider shaft. Google the word Tangent. I don't like how that part was worded at all, imo it's easier to understand with the audio off. The other type of LSD, which I believe is much more common, uses the side gears to apply the clutches. Picture a normal open diff but with a clutch behind ea side gear. The more torque applied the more the side gears are forced against the clutches thanks to the angle cut on the spider and side gear teeth. That setup is easier to understand too, and I'd assume cheaper to mfg than the one in the vid?

@hasanyavuz5388 6 жыл бұрын

I don't understand. : - | What is the tangential ? How locking it ?

@lorenzomarangon1419 6 жыл бұрын

I keep missing a couple of things: 1) If you accelerate during a turn the differential won't work because the locked mechanism, isn't it? 2) What is the point of the 2 way type? In which situation is useful? During a steep downhill?!

@paulhanna2338 5 жыл бұрын

Reversing off road

@HarshitSingh-tg9yv 7 жыл бұрын

In 1 way type LSD, you said it will distribute torque equally and overcome traction problem....but that is what open differentials do...they always distribute equal torque....so how does 1 way LSD overcome traction problem ???

@Steeleagle302 6 жыл бұрын

Harshit Singh what an open differential does is simply transfer the torque to both wheels, the amount of traction each wheel has determines the balance because if one tire has zero grip the torque will take the path of least resistance and accelerate that tire while the tire that has grip slows to a stop.

@Xubor 6 жыл бұрын

The construction looks like a bad compromise.

@spnfs 10 жыл бұрын

Can someone explain what the percentage that is used to described a lsd is ? and please learn engineering make a video fors viscous lsd !!!

@WireSniffer 10 жыл бұрын

If I understand you correctly then it would be the % of torque to each wheel, the numbers are usually the ramp angle numbers in degrees, so when the pinion shaft cam presses against the pressure ring case ramps the angle determines how much torque is sent to the wheels (locking). 1 way LSD is activated only on acceleration, the ramp angle is flat on the deceleration side, 1.5 means slightly less force when decelerating than accelerating, and 2 way means similar force when accelerate or deccel. Initial Torque (breakaway, force, spring, pre-load, etc) I believe to be the amount of pressure on the clutch plates when there is no accelerate or deccel when the car is static, so when you are either not on the throttle or brakes there is still some pressure on the clutch plates and therefore transfer of torque to both wheels. high amounts of this will create under-steer. and make it difficult to turn corners. same kind of with accelerate and deccel too much should cause under-steer, but depends on the cars drive train layout and how much it is set too on the LSD. Phew!

@spnfs 10 жыл бұрын

Learn Engineering If so then what does the 40% LSD mean ? Maybe it's on the other types of lsd and not on the pressure ring based ?

@WireSniffer 10 жыл бұрын

Learn Engineering so is that right then that it transfers equal amount of torque to both wheels ? In theory that would be correct, as the pressure ring case is adding pressure equally to both clutch packs, regardless of a racing scenario where the inside wheel lifts slightly and you need to add more torque to the outside traction loaded wheel, but obviously too much will incure understeer on FF cars and oversteer on FR cars. I've edited my comment to match equal torque to both wheels is applied.

@WireSniffer 10 жыл бұрын

Spiros Mallios I always thought it was 40% of lock but I agree this I'm not sure

@WireSniffer 10 жыл бұрын

Learn Engineering please explain the above link regarding bias ratio and locking factor % or is this because this is different to the pressure ring version in your video ?

@myrusEW 7 ай бұрын

I wish you could express software physically.

@crazyDIYguy 5 ай бұрын

😵‍💫🤯🤷‍♂️

@td8786 2 жыл бұрын

In short: Engaging the clutches of the LSD negates the operation of the differential temporarily. Can anyone please verify if this statement holds true?

@jake-mv5oi 2 жыл бұрын

Yes. The more torque applied by the ring gear to the carrier and thus the pressure rings, the harder the clutch packs will lock up, and the more resistance there will be to the side gears & spider gears spinning at different speeds.

@kwunmeichan8013 2 жыл бұрын

1:29

@VIJAYAMURALIDHAR 7 жыл бұрын

can anybody explain what happens when cornering.???.. what is the use of spider gears .. please ., for me its very difficult to understand

@Steeleagle302 6 жыл бұрын

Vijayamurali search for a 1930s chevy differential explanation video.

@b.srajawat1110 6 жыл бұрын

Thanks sir but can you make videos in hindi

@fabi_v6746 3 жыл бұрын

can anyone explain how a diff like that can lock only 40% ?

@GunFunZS 3 жыл бұрын

It takes some pressure to cause it to lock. if your wheel is slipping on both sides there isn't enough pressure for it to lock very much.

@biglharlemfinest 9 жыл бұрын

Im probably not understanding this well but if we say 100% preload.... that means that the clutch pack are forced together at their max (creating maximum firction possible) wich basically means that the diff is locked. How can that be interesting if the diff is locked and basically do the same job as a welded gears on shafts.....theirs something i dont understand so if anybody can help me, it would be awsome thank you alex

@WireSniffer 8 жыл бұрын

I don't know how it would compare to a welded diff, but with 100% preload you are making the car very diffcult to turn, without applying any acceleration or deceleration inputs, it is the static locking applied before even the car is moving. ideal for mid corner stability with your not on the throttle or brake.

@user-ze7mc8xq9s 3 жыл бұрын

🇱🇦👍🙏

@satejhake3414 6 жыл бұрын

It should be manual

@iconferon8576 4 жыл бұрын

Nice video🙂👍! But as i understand, a 1-way LSD of this kind can't reverse! I guess they have another mechanism for reversing. 2-way would do it & 1.5-way would partially do it with some power loss. And that brings me to the other problem of this differential (as far as i understand), that there might be loss of power in low to medium powered accelerations, since the clutches wouldn't be "squeezed" hard enough. But perhaps these clutches don't need much pushing to work efficiently.🙂

@NelsonboadaMovil 7 жыл бұрын

Si se acelera mientras se toma una curva puedes volcar con este sistema.... Horrible

@Iseenoobpeoples 2 жыл бұрын

This video is wrong : "An equal amount of torque will be transferred to the right and left wheel" No, since the clutch pack is locked,100% of the torque is available to the wheel with traction.