Difference Between Limited Slip Differentials
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- čas přidán 23. 10. 2018
- Most vehicles on the road today have some sort of differential fitted in the drive axle. As you go around corners the inside wheel always spins slower than the outside wheel because it has a shorter path to take. If the two wheels were solidly connected, the inside would skid around which leads to accelerated tire wear and unpredictable handling. You don't want to deal with that every day, so a differential is installed to allow a split in speed between the two wheels. Car guys prefer maximum traction at all times but a lot of stock vehicles come from the factory with an open differential.
On an open differential, four spider gears send power between the two wheels. As you go around corners, the spider gears are constantly turning which allows for a difference of speed. And while that's great for a commuter car in ideal weather, but not so great in low-traction situations.
That's where a limited slip differential comes into play. It helps better distribute the power between the two sides. We're going to cover some of the most popular types.
A clutch-type limited slip is what you'll find in most American muscle cars from the '60s and '70s along with other rear-wheel-drive cars. Depending on the manufacturer, there are a lot of different trade names: Posi trac, sure grip or track loc but they all work the same. Behind each spider gear is a series of clutch packs and there are springs in the center that push out against the clutches. The clutches slip just enough to allow some difference in speed while you're cornering. But if you ever get stuck with a limited diff, both wheels will be spinning.
If you own a full-size GM truck that's labeled as having a locking differential, it'll have an Eaton G80. It's called a locker but it's different in terms of a "traditional" locker. It's actually more similar to a clutch style limited slip. No matter what application you have, there's a differential out there that'll work for you.
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A video about the difference between Limited Slip Diffs, and you only showed one type.
What about cone type diffs, or gear type like Torsen and Quaife, or Viscous, or even electronic?
You can't talk about differences without at least talking about the other basic options.
I just recently found out about the Torsen an Schaeffler ones, the diff-world has a ton to offer but sadly, none of them (even if only a selection of the most popular) are 'being compared to each other in an all-encompassing guide for the aspirant engineers out there.
Hello, If I only have one limited Slip differential. Where do you recomnend install it, in front or rear axle?
Left quite a few options out.
You work today very good 👍 and beautiful thanks my friend
So does a phantom block acts like a welded diff.
You'd mostly see 60's and 70's muscle cars with clutch pack type umm what? That and continually over the years on such rarely seen cars like ford mustang's, explorers and countless others up to present haha. There are other types since the 60-70's however the clutch type continued to be used. There are aftermarket and now factory equipped cone type, all gear one like say a auburn torsion but the earlier style didn't drop to obscurity especially as OEM.
Put a 69 Chevelle 2.56 8.2 posi rear under my 69 GS last week, filled with GL-5 and 1 4oz of GM additive. Only when moving slowly, and turning, she fights me back there, loud pops n crunches, can feel engage and coast, get back to going straight, can punch it, cruise it, not a peep with a 455 pushing it.. Not sure if should try another jug of additive or pull her apart to peek. Looking at spider gear sets, Nitro was only brand that did not say for specific carrier, Yukon saud only for their carrier, of which they claim, could be under her, not sure on how to tell.. Also since would have apart, carbon fiber clutch packs.. See some with the fiber on the geared set, and some on the eared sets, not sure if one better than the other.. where the frictions are.. getting too old for this.. only ever had 1 rear let go and replacement went in without issue, this time, loads of fun... think hard parts, or additive issue? will know if get her up tomorrow..
99% info I already know. then I see this GM style LSD and I learn a bit but that's it. thanks for that though. I wish I could have learned more here but I guess I will take my further questions elsewhere.
What is the main Racing Differentials
A spool if you're going all-out, it's basically a welded differential. A clutch type LSD is common for mild racing/drifting.
Doesn’t post allow for lots of slippage where LSD is minimal slippage?
You mean posi? A posi-traction is an LSD, it slips when navigating corners and also slips a little even if you floor it or are in need of more traction. It's the best option if you're mostly driving on the street and occasionally need more traction: snow, rain, mild off-roading.
What if my rear what's to push my front end on a turn and it fills like the rear is jumping on corners
Excessive bias.
Springs are too strong.
Huh?
Sounds like too much junk in the trunk, maybe lose some weight.
LMAO
It's having trouble unlocking. I noticed my 2019 chev truck does that shit
Whats good for burnouts
Cars.
Is that Lawrence Tolman!?
So which one is best?
Depends on your application. If you're mostly doing street use and occasionally need more traction, then a clutch type LSD would work well. The all-out lockers are for off-roading only. The middle one, is really a mechanical locker that automatically engages when it "thinks" a tire is slipping, this is good for mild off-roading. Say you go on dirt roads and encounter mud/wet conditions somewhat often and don't want the trouble of having to push a button to lock and unlock your rear diff all the time if you're switching between low and high traction surfaces a lot.
@@cyrilpatton238 ‘19 370Z with a viscous lsd - want to upgrade. Car will rarely be tracked and will not be winter driven. Looking for better performance and feel on road - have some snap oversteer. Any ideas would be appreciated. thx in advance
I upgrade rhe rearend of my 2011 chevy Colorado 2.9 with a posi locker... Didn't know the name or model of the locker now i know I've got the eaton g80 for GM
That’s a good locker . I had 3 of them
All worked when I needed it
All I know is I have a 16’ RAM 2500 6.7L 4X4 Laramie Longhorn with the “anti spin” differential. (Verified via window sticker and VIN lookup.)
Anyway, I turn traction control off, power brake to ~10psi and then let her eat.
Driver side leaves a DARK strip while the passenger side leaves a much fainter one.
Reason I’m here…
I was stuck so many times even on level ground I had to Lincoln Lock .
Eaton G80 lockers are absolute garbage! Had it lock up in positrac on my 2004 Chevy Suburban Z71 under normal driving conditions, and cost me a whole new rear end! It was cheaper to buy a whole axle assembly instead of rebuilding the rear differential!
You're supposed to change the diff fluid. So I'm going to say it's bad owner error.
I'm no fan of Chevy/GM. But I've personally seen these things last several hundred thousand miles with proper service intervals.
Aaron Eckardt yea when I just bought the truck this year and only drove it 6,000 miles since I bought it and the rear end takes a shit. The truck had 138,000 miles on it when it went out, worst part of it was that I was on vacation with my family when it happened......but luckily I was at a in-laws house to fix it and swap rear ends out myself.
@@aaroneckardt5514 i know dodge trucks had a big problem with no diff fluid in the diffs from the factory believe it or not.
Exactly the style of the g80 is alright were the internals of stronger more durable materials.
Bad dealer prep. Did not check fluids. Typical modern shit box mechanics.
1:16 Why not, explain please? 2:05 How? you just stated the clutches would slip... I give up, like most videos on differentials, the presenter himself doesn´t understand how they work himself.
1:16 -- "because the wheel on ice would be spinning, and the one on pavement is not going to be doing a thing" - because that's how spider gears work. 2:05 - because the clutch puts pressure on both side gears. Sounds to me like the presenter knows more than you...
Well at least we got to sample some heavy metal intro and outtro music. :-\
g80 is not what that locker is called. g80 is gm's rpo code saying that the vehicle has either a locker or lsd. that is a eaton gov loc and no its not a lsd, they lock up and split the power 50/50.....
You are wrong on so many levels I'm not going to comment.
What a waste of time! Nearly half the video explaining what a standard differential does followed by just one type of LSD!
Such a weak presentation…
Lol what a video. Explains nothing about subject in reality.