Cupra R LSD?

Firestar_3x · 13 Sep 2007 at 12:37

Virdi said:
So are we sure that the Cupra actually uses EDL - in it's ESP system?

Thats the stability system, not the diff, you can't turn off the EDL much like you can't turn off the ABS

Virdi · 13 Sep 2007 at 12:38

Simon said:
Really they just stop power going to the wheels than actually increasing traction like an LSD does

Are you sure?

How do they stop power? As I understand that some 'ESP' systems actually apply the brake..?

Firestar_3x · 13 Sep 2007 at 12:39

Virdi said:
Are you sure?

How do they stop power? As I understand that some 'ESP' systems actually apply the brake..?

All ESP systems apply the brakes thats one of the ways they stop the car from spinning

Zuban · 13 Sep 2007 at 12:41

I had the same of thing as EDL in my corolla t-sport, whilst cornering if you gently fed in the power, you could feel it use the front brakes on the inside wheel for fractions of a second, felt wierd but it did work to pull the nose in tighter than it would had it not been there. It was difficult to exploit though, and provided no help from a standing start.

Simon · 13 Sep 2007 at 14:19

Main point is they still use a normal Open diff rather than a fancy proper one, ala Quaiffe or TorSen

Firestar_3x · 13 Sep 2007 at 14:20

From what i've read thats correct, its not got a Viscus or Torsen diff.

Virdi · 13 Sep 2007 at 14:53

I've always hears that LSD's make the steering not so pleasant (On Front Wheel Drive cars) - is this true?

agw_01 · 13 Sep 2007 at 14:57

Virdi said:
I've always hears that LSD's make the steering not so pleasant (On Front Wheel Drive cars) - is this true?

Unpleasant as in how?

LSD's are awesome

Firestar_3x · 13 Sep 2007 at 14:59

Only if you have the same tyres....

paradigm · 13 Sep 2007 at 15:01

They "can" make them a little weird on uneven surfaces, but that's not to say that all FWD LSD equipped cars are like that, nor that its a huge problem either.

agw_01 · 13 Sep 2007 at 15:01

To be fair, it wasn't that bad with mismatched tyres.

Ask Sam what it was like when he went out in it... I think his words were "It's a Rover, why does it have so much grip"

lol

Matmulder · 13 Sep 2007 at 18:02

Firestar_3x said:
Electronic Differential Lock. The electronic differential lock (EDL) permits smooth, comfortable starts on road surfaces that do not have a uniform coefficient of friction. If a wheel starts to spin, EDL brakes it as necessary so that power is transmitted to the wheel with the better traction. EDL reduces tire wear and works up to about. 40 km/h (quattro®: up to about 80 km/h). EDL is part of the electronic stabilization program (ESP) and the traction control (ASR).

I'm not sure thats entirely correct - as far as I'm aware it only brakes the wheel which is losing traction, it doesn't transfer power across to the wheel with better traction....

And LSD's are fantastic on FWD cars - I'm having one fitted to my GTA as we speak - because after driving the ITR for so long, you really miss it.

Bear in mind there are LSD's and Torsen Diffs - they're slightly different. I'm having a Torsen diff fitted to the GTA (ITR was Torsen too). Not 100% sure on the techy differences, Google will help though.

Firestar_3x · 13 Sep 2007 at 18:03

Matmulder said:
I'm not sure thats entirely correct - as far as I'm aware it only brakes the wheel which is losing traction, it doesn't transfer power across to the wheel with better traction....

And LSD's are fantastic on FWD cars - I'm having one fitted to my GTA as we speak - because after driving the ITR for so long, you really miss it.

Bear in mind there are LSD's and Torsen Diffs - they're slightly different. I'm having a Torsen diff fitted to the GTA (ITR was Torsen too). Not 100% sure on the techy differences, Google will help though.

Well thats from Audi so if you want to tell them otherwise...

paradigm · 13 Sep 2007 at 18:03

Matmulder said:
I'm not sure thats entirely correct - as far as I'm aware it only brakes the wheel which is losing traction, it doesn't transfer power across to the wheel with better traction....

Err... what do you think will happen if you brake one wheel whilst retaining the same power output from the gearbox? The power HAS to go somewhere

Simon · 13 Sep 2007 at 18:32

paradigm said:
Err... what do you think will happen if you brake one wheel whilst retaining the same power output from the gearbox? The power HAS to go somewhere

Yeah into friction and thus heat in the brake disk.

paradigm · 13 Sep 2007 at 18:42

Simon said:
Yeah into friction and thus heat in the brake disk.

Yeah, SOME of it... Some will be transfered to the other wheel.

eidolon · 13 Sep 2007 at 19:31

I always thought that LSDs on FWD cars were supposed to be rubbish but after merlin took me out in the Teg I was converted. The difference between that car and the CTR was night and day, his Teg felt much more like my Elise in the way that it handled, amazing for a FWD car!

PMKeates · 13 Sep 2007 at 20:00

Simon said:
Yeah into friction and thus heat in the brake disk.

As Paradigm says, some will, but as you know energy always takes the easiest path!

Can't say I'm a big fan of EDL, or ADB as BMW call it. Variable M differential lock is where it's at!

NickXX · 13 Sep 2007 at 21:08

EDL is rubbish, doesn't do anything even at low speeds.

paradigm · 13 Sep 2007 at 21:10

NickXX said:
EDL is rubbish, doesn't do anything even at low speeds.

Oh it does, you can feel it. What it does isn't particularly useful, but it definately "does" something