[928uk] LSD

[Young Martin @Consult]

Had a LSD in my old Westfield SEiW.
 
165 bhp in a car weighing 600 kg's
 
Donuts were easy and grin inducing !!
 
Not the sort of behaviour a 928 driver indulges in of course !
 
Martin.
 

-----Original Message-----
From: Walker, Scott [mailto:SWalker at ndsuk.com]
Sent: 08 Jun 2004 15:06
To: Young Martin @Consult; 928 (E-mail)
Subject: RE: [928uk] LSD



Note though that the LSD 'changed type' later on - the GT (at least - I can vouch for this model!) had the "PSD" - Porsche [electronic-controlled limited] Slip Differential.

The original LSD (as is the 'norm') had an up to 40% lock-up on [mechanical] detection of wheel slip [spin] on one rear wheel.

The PSD has an electronic (based on [ABS] wheel sensor feedback) slip detection, plus a g-sensor to detect cornering-induced wheel slip. This is supposed to be derived from 959 technology. It means that the LSD operates during aggressive cornering-at-speed to give you fast corner-exits as well as low-speed starts where there is mixed amounts of traction available to your rear wheels.

In reality... if you're too heavy with your right foot an LSD just allows you to spin both rear wheels and end up in a right mess (i.e. pointing in directions you hadn't told the steering wheel to produce). Whether that's better than just spinning one rear wheel into oblivion (without an LSD) is a separate discussion! The point is that an LSD/PSD equipped car does behave differently to a non-LSD car when you put the hammer down.

Scott '91 GT 

-----Original Message----- 
From: Popov, Alex [ mailto:Alex.Popov at daiwasmbc.co.uk] 

LSD was a tickable option on all models i.e S, S2 and S4. It helps if you do 
track days or like to drive ye beast in anger down the private test 
facilities aka B-roads :) 

Alex 
'84 Indisch Rot S2, 4spd LSD 
Nordschleife Toy 

-----Original Message----- 
From: Young Martin @Consult [ mailto:Martin.Young at tpsconsult.co.uk] 

I know GT's had LSD's as did the SE sport. 

Did the standard S4 or S2 have LSD's? 

Cheers. 

Martin. 
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