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Sounds the same, not opposite... (archive)

[ Follow Ups ] [ 5-series (E39) Message Board ] [ Msg. Board FAQ ]

Posted by karl on March 04, 2001 at 19:03:02:

In Reply to: I have an opposite cornering experience with posted by Stepan on March 04, 2001 at 18:15:17:

...

Cornering is weird and will take some getting used to. Nailing the gas through a corner results in extremely obvious pulling on the outer (traction) wheel with the car receiving a whole lot more push through the turn. It feels strange and will take some getting used to. The dynamics of coming though a turn under throttle are a little different, but a whole lot more power can be applied.

...

Karl

M5 based VLSD. I am powering through the corners and it feels like the bitch knows where I am going - it is NEUTRAL. Before I had moderate understeer and if I tried power through ... that would be the end of it. No push from inside/outside - just neutral. Exiting corners is a whole new ball game - 5000-6000 WOT exits are smooth and sure. I can not make rear end loose. Amasing.

Stepan

BTW, I am running winter Dunlop Sport 235/255 tires.

I'm not sure how this is the "opposite" of what I'm saying. :-)

I didn't say at any point that it felt out of control or hard to control, just that it is substantially different from the old open-diff cornering where adding throttle would simply result in lots of DSC intervention, RPM retardation, braking, etc., because the inside (less traction) tire was receiving the power.

I expect the performance/behaviour that we're both seeing is similar. After all, the Quaife is not a LSD, it's applying all possible power to the traction wheel(s) as optimally as possible. The behaviour is probably not all that far off the VLSD mods to the 25% M5 LSD done by Jim @ Metric Mechanic.

Anyway, my original point was simply that there is a major difference between the old open diff and this ATB diff. The car feels different cornering because of the way power is applied and it now feels like a different car in corners.

--
Cheers, Karl


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