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Damping and harsh street driving


oz951

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I thought I might share an observation I have recently made since coming to Sydney.  My 996 is set up with some very stiff spring rates compared to most, certainly a lot stiffer than a standard GT3 for example. The combination works as has been attested to by a couple of professional drivers who have driven my car and also endorsed by probably the best known UK suspension setup guy.

 

Anyway, the point is that I have driven that car across UK & Europe and the ride is definitely firm and demands attention to the road conditions and necessitates that the damping be backed off for street driving if the ride is to be at all 'comfortable'. I found that when I got in the car in Sydney the ride felt brutal on some of the roads here. This past weekend I actually increased the damping from 3/30  to 8/30 which I'd normally consider as a very soft setting for rain conditions on a race track. To my surprise this actually felt better and better again when I set the rear sway bar from 50% to full soft (no surprise there).

 

I guess the learning point for me was that under damping can lead to an increased sense of harshness on a rough road, and as I have known for some time underdamping certainly makes the steering response mushy and variable as the excess body motion induces significant suspension geometry changes.

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The guy that did your setup............Chris from COG?

Yes, it was Chris, that did the setup. He confided that he'd been concerned the car might have been a 'Frankenstein' as he knew I'd done a lot of things to it that aren't typical for a Carrera. He made some interesting/favourable comparisons to where it stacked up against some other well known brands.

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Chris's reputation precedes him. I have read about the way he operates and spoken to some that have used him.

Is there anyone in this country that is as skilled, knowledgeable, diligent and passionate about suspension setups?

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