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Subject: "How does a QUAIFE LSD change my handling?" 1 | 2 | Previous topic | Next topic
RS_GuyJun-01-01 03:06 AM
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#2598, "How does a QUAIFE LSD change my handling?"




          

'Sup guys...

I really *want* a Quaife LSD, for lots of reasons (stock spider gear will break soon - they all do under lots of power) and for Drag Racing properly!

My mechanic though, told me that my handling would be more unpredictable in wet weather i.e the car would go side ways coming out of a corner if I step on the gas a little or if the LSD locks up for some reason on a slick surface.

Where I live, it snows too. I rarely drive when it snows, but I want to know how bad is it with a LSD?

Basically what I understood from him was that "its like having RWD bad weather handling from the front"...

Please say it isn't so!

Guy
RS_Guy



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TeamMichael_97RSJun-01-01 04:03 AM
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#2599, "RE: How does a QUAIFE LSD change my handling?"
In response to Reply # 0


          

I don't agree with your mechanic. I think he is confusing the limited slip differential with a Posi-Traction rear-end set up. The limited slip differential should allow the outside wheel to turn faster in a turn as long as it is not ridiculously faster. If you went to a set up like the Phantom Grip, that does more to make it a posi set up. I don't see a limited slip gearing ruining your cornering ability. I wouldn't worry about it I don't see it doing anything but helping.

The only other alternative to somewhat help is to weld the spider gear pin in, that is what normally fails.

I would like one too.. but the $1075 price tag kind makes me cring. Someday...

Snow at Purdue.... never.......

"To strive to seek to find... and not to yield."
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RS_GuyJun-02-01 01:48 AM
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#2600, "RE: How does a QUAIFE LSD change my handling?"
In response to Reply # 1




          

>I think he is confusing
>the limited slip differential with
>a Posi-Traction rear-end set up.

That's true, that's what I think too. Reading up on Quaife's website, they actually mentioned *improved* traction in wet weather.

>The only other alternative to somewhat
>help is to weld the
>spider gear pin in, that
>is what normally fails.

Yup. The question is, How much will it hold up welded, and if it breaks (welded or not) what will it damage...(apart from the transmission case)..

>I would like one too.. but
>the $1075 price tag kind
>makes me cring. Someday...

I heard of one groupbuy place selling them for possibly cheaper than that, so I'll keep ya guys updated. I am sure that the price they had (about 750-850) was for GSTs, but they said they *might* be able to get it for us... I am still waiting for a reply.

>Snow at Purdue.... never.......

What it should be re-phrased as:
Snow cleared on time at Purdue.... never.......

Guy
RS_Guy



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TeamMuRiXJun-02-01 02:50 AM
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#2601, "RE: How does a QUAIFE LSD change my handling?"
In response to Reply # 2


          

Mine is on the way from RRE right now. Bought it Tuesday. I can let you know in July when I get some good driving in on how well it performs.

MuRiX
97 Eclipse GS HRC Stage IV+ I think
Sitting and collecting dust most of the time..
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TeamJasonESi_TJun-02-01 03:02 AM
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#2602, "RE: How does a QUAIFE LSD change my handling?"
In response to Reply # 3


          

Wow...awesome Chris!

You can SHOW us in July....

Jason
98' Eagle Talon ESi-T
Mitsu Super 16g Turbo(HRC)/Custom FMIC


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ModeratorVX100Jun-02-01 04:49 AM
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#2603, "RE: How does a QUAIFE LSD change my handling?"
In response to Reply # 0




          

Guy, the quaife will only improve the handling, both in wet and dry conditions. Last year's FSAE car at Brown University we used a quaife, and it's a good differential.

We switched to an AP diff because the quaife was more "street friendly" and would slip a little for our light (about 500 lbs) car (it was designed for a street car weighing more than ours), the AP grabbed tighter for our light car, but for our cars the quaife would be the way to go.

Todd Scungio
98 RS
15.803 @ 86.48 MPH

"Tutto fa brodo."

Todd Scungio
98 RS
15.173 @ 90.70 MPH

And also a 2011 Ralliart

  

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RS_GuyJun-02-01 05:04 AM
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#2604, "RE: How does a QUAIFE LSD change my handling?"
In response to Reply # 5




          

LAST EDITED ON 02-Jun-01 AT 10:06 AM (PST)

Awesome Todd thanks for the input. What are you teaching in Uni anyway? Is it something automotive related? I remeber you mentioned something like mechanical engineering...

Chris: Looks like you're reaching the point where it's easier to list what mods you HAVEN'T done!

Guy
RS_Guy



http://www.GTuned.com

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ModeratorVX100Jun-03-01 02:20 PM
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#2605, "RE: How does a QUAIFE LSD change my handling?"
In response to Reply # 6




          

I forgot about that, Armond is right, it's all gears, a unique design but effective.

Yea Guy, I teach labs there but for fluids, thermodynamics and chemical processes in engineering, and I work on research projects. I help out with their FSAE team.

BUT, I'm not going to be around there much longer, I'm looking for another job.

Todd Scungio
98 RS
15.803 @ 86.48 MPH

"Tutto fa brodo."

Todd Scungio
98 RS
15.173 @ 90.70 MPH

And also a 2011 Ralliart

  

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Armond30Jun-03-01 12:46 PM
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#2606, "RE: How does a QUAIFE LSD change my handling?"
In response to Reply # 0


          

I've had one in my trann fo ra LOOONG time (back when bill's isuzuperformance was the only place that you could get them). it isn't like a regular viscous slip dif. it has screw gears inside of it. it acts just like a regular old open dif.....until you start putting some power to it (i.e. taking off). I rember when I drove my car to miami a year and a half ago right before that year's christmas...I stopped off in jacksonville. I was at a light in light rain (the really slick road stuff) and I wanted to see exactly how the diff woudl act with average slip conditions (where you slip it just enough to usu. bust 1 tire loose). it was wierd. one tire would spin, then the other, then the other ....it was like power was being shifted left to right to left as traction changed. that' swhat it should do. it helps keep control. I think you will have absolutely no problems with yours. as a matter of fact, I know you will becuase you never have to worry about "your diff wearing out". there are NO viscous plates in the thing at all. just gears. pretty neat little thing.........just a major PITA to put that tranny back together.

bring it on...........

  

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RS_GuyJun-03-01 02:58 PM
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#2607, "RE: How does a QUAIFE LSD change my handling?"
In response to Reply # 8




          

Great! Thanks for the input Armond.

Hey, aren't you the first 420A dude to snap and axle due to the Quaife? I am considering going all the way and getting "built" axles too.. Good idea, or not worth it?

Guy
RS_Guy



http://www.GTuned.com

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HadesOmegaJun-03-01 05:02 PM
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#2608, "RE: How does a QUAIFE LSD change my handling?"
In response to Reply # 9


          

I think this is what a LSD does. When you corner your differential slips so your wheels don't lose grip so easily. An LSD makes it so that instead of making your differential slip it instead transfers power from one wheel to another. So you car won't loose as much power during cornering. I guess it helps for drag racing by giving your better traction and torque.


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