F-Body Europe

Can smbd tell me the CW-Wert (don't know the english word for it) for f-bodies, preferably all generations. I would also like some comparison to other cars, maybe smbd knows a good site?

greetz

Vadim

Was bedeutet "CW"? Wert = Value, e.g. pH wert = pH value.

Just for info:
Cw is a hypothetical value (in relation to flat-plate value) and not useful to you.
What you actually want to know is the CwA (drag co-efficient x frontal area). That relates to the force you need to overcome the wind resistance of your car.
If you don't understand: a typical car has a Cw of about 0.3 and a motorcycle has a Cw of about 0.7, but the car has a frontal area say 3x that of the bike. Therefore the bike will use 22% less power to do the same speed as the car.

well, I know that Wert = value hehe

ok, I see you know what I mean, Stef.

What I wanna know is how good is the potential of my maro for higher speeds and how is it in comparison with other sport cars.

2slow is correct with the formula, but the resulting calculation of the formula doesn't tell you how much "force you need to overcome wind resistance." It just gives you a factor/index for purposes of comparison. 2slow had a good description about the car and the motorcycle, too.


Bottom line: low coefficient of drag X small frontal area = less air resistance.

0.34 for the 1998+ models, look here.

Ben

I see, I was googling too and find always .33, .34 for the Camaro and .29 for the Corvette C5/Z06 and .28 for the new C6.

Is that a big difference? 0.34 and 0.29 ?

How long is a piece of string....
The answer is yes and no, but don't get too hung up on Cw alone. At 100km/h it does not matter, but at top speed it is worth several km/h. When we design in the wind tunnel then Cw is secondary. You first have to fight aerodynamic lift, then balance the car front to rear, make sure that the coolers are optimized and the brakes get air and only then can you see what is left to improve the Cw. The downside of a low Cw car is that is typically becomes very unstable in side winds.
Unless you know what you are doing I would just leave the issue alone. The only easy trick is to lower (as in slam) the car (slightly smaller frontal area).

my aim is other 300kmh and I was wondering if I have the right car and what I could do to make the aerodynamics better. It is already very low (2" lower).

I'm intending to do smth with the front bumper, another grille, maybe completely closed and maybe another wing if that helps...?

With proper gearing and approximately 420 ps will get to themark.

tnx, Roy. I have 2.73 gears that should be good right?

That might get the car there, but what about the driver? I've been on the other side of 300 km/h and even in a good handling Porsche it is not the place or time to "discover" if your skills are up to the job.

Well I was driving with my M5 at these speeds and the Camaro at higher than 270kmh too, but I don't know for sure how fast I was.

You're a brave man! There's a very big difference between 270kph and 300kph. I hope your brakes are in good shape.

... plus there might be some "minor" differences in the suspension and handling between an M5 and a Camaro ...

oopsy, postet from my wife's account *g*

I didnt say 270, it was much faster than that. Handling was no prob, didn't need to handle coz it was a straight road. Wouldn't test the top speed somewhere else anyways and the brakes will be upgraded of course, duuuh.

The M5 was going over 300, but it didnt have the original engine and the handling sucked for high speeds, coz it was too sensitive.

What is the top speed of your Z06 and how's the wind noise?

Top speed is supposed to be 175mph in 5th gear. I've hit 171mph in 5th before slowing down for traffic. I haven't tried to see if it'll pull in 6th at those speeds. If it can pull in 6th, then of course it'll go faster than the GM-claimed 175 (282kph), but I'm not sure I wanna try.

And how did you do that...? You apparently removed the top speed limiter, right?

Ben