Two days at Magny-Cours F1 track in France with Pirelli P Zero Corsa's

CB72 said:

I definitely could give it a try.
Watching my video, I computed the lap times and they went from 2'39 to 2'36 and then 2'33 before the spin.
You are right, I was a little too confident when I spun...
A softer rear sway bar might have given me some warning???

Click to expand...

Hello Frank

I have the Zanardi rear sway-bar as recommended by Billy.

CB72 said:

I definitely could give it a try.
Watching my video, I computed the lap times and they went from 2'39 to 2'36 and then 2'33 before the spin.
You are right, I was a little too confident when I spun...
A softer rear sway bar might have given me some warning???

Click to expand...

More rear grip. Still think a 25mm front bar wouldn't be a bad idea either.

Billy he is only running zanardi springs..with his track tires and track aspirations don't you think he needs more spring and better dampers?

His current P Zeros are street tires, but even the R888s would probably be fine with his current setup, but for as track-serious as he is, a good set of coilovers wouldn't be a bad idea.

I agree ...he really wants to go faster on track but he kinda overlooks his rather street oriented spring/damper combo.

docjohn said:

I agree ...he really wants to go faster on track but he kinda overlooks his rather street oriented spring/damper combo.

Click to expand...

You guys are right on!
I'd like te be faster but I believe I have too much roll with my current set-up.
The concern is that the car could be a pain to drive on normal roads if I run 10 to 12 k springs and a 25 mm sway bar?
On top, I'm not convinced the body is rigid enough to take stronger springs???
Here's a picture when I still had my Mugen body kit but with my full slick tires.



To be compared to this with me behind

trust me I've been there,the improvement in lap times was palpable when i went from the zanardi koni setup to the type R...and I'm sure Billy could give you suggestions on a coilover setup depending on the tracks you frequent in Europe.

The NSXs chassis is quite stiff. Your roll has to do with the suspension & geometry, not chassis rigidity. The NSXs front roll center is REALLY low, which is why it needs a big front bar to keep the roll under control.

Coilovers won't necessarily help roll as much as a bigger front bar, but a quality set won't hurt your ride quality.

I use a:
1.25" (31.75mm) custom NASCAR style straight front bar
Oem rear bar
KW V3
Non-compliance and clamps
215 / 265 AD08R

Alignment is:
front 1mm total toe out
rear 3mm total toe in
Camber -2.0 / -2.2.

Street driving is fine when the settings are set on the soft end of the adjustment. Tighten up the shocks and they feel good at HPDE events. However, I am a intermediate driver.

GUNDAN323 said:

I use a:
1.25" (31.75mm) custom NASCAR style straight front bar
Oem rear bar
KW V3
Non-compliance and clamps
215 / 265 AD08R

Alignment is:
front 1mm total toe out
rear 3mm total toe in
Camber -2.0 / -2.2.

Street driving is fine when the settings are set on the soft end of the adjustment. Tighten up the shocks and they feel good at HPDE events. However, I am a intermediate driver.

Click to expand...

I was thinking about the KW V3 as they also have a "track" version I believe.
What about understeer, it must be quite severe or am I wrong?

A little trail braking into corners fixes when there is understeer.

stuntman said:

The NSXs chassis is quite stiff. Your roll has to do with the suspension & geometry, not chassis rigidity.

Click to expand...

I understand but I wonder to what extent the chassis starts to flex with a very stiff suspension.
That's where the full roll cage must help a lot?

The coupés have a very stiff chassis. I've never found any torsional rigidity numbers but having tracked NSXs with and without cages and with various stiff suspension setups, I would not be concerned atall even running 1200/1000lb springs and stiff bars with racing slicks on a stock chassis. NSX-Ts are a different story.