he asks...

Next up, the CD on a 02 max is a very repectable .31(on the SE). Please let me know what the CD is on the 2K2 CL-S. I highly dow't it is much better, probably at best .30. A CD of .01 difference will have very little effect on a highway race or even top speed for that matter. Please let me know the CD for teh CL-S, I am dieing to hear it!





Since we all know im a moron, and I only know the basics.... so i figure one of you guys can help me to understand what he is talking about.

 

He wants to know what the Coefficient of drag is for the CL-S....its around .32

 

I'd say that's a good estimate, but have you seen it published anywhere? I'm not certain, but I don't think it has been...

 

I don't normally do this, but with respect to the moron comment dow't (sic) is spelled doubt.

 

I always get confused on this. Is the lower number better, or higher better?

 

A lower number is better. Higher CD means there is more your vehicle is less aerodynamic.

And yes, the CL-S has a CD of 0.32, I have it from an Acura press-release.

 

do you have date for that press release by chance?

I've checked pr newswire for cl-related press releases that say anything about the coeffecient of drag and haven't seen anything.

was it a canada-specific press release, maybe?

 

Well, it's from a report I purchased from a website -- seems to be something manufacturer's publish. it had dealer invoice prices inside and prices for all the options. Also contained in the report were full specs on the car, every imaginable stat, amongst them the CD.

 

I wonder if lowering the car affects the CD very much.

 

Yeah and it's respectable and dying.

 

cool. I just wanted to make sure I wasn't going crazy or something.

 

Crippen, could you post that web site. I have a 03 6-speed on order and it would be nice to see if they have any specs on the new models, or Canadian pricing for that matter.

 

No problem.

www.roadcompanion.ca

It IS canadian pricing as a matter of fact, that's how i got $1200 off sticker for my Maxma

 

Come on, we all know it's spelled doobt...as in no doobt aboot it, eh?...lol

 

Lowering the car, a spoiler, and a body kit all have a positive effect on CD. Allthough the cars frontal area is increased, the flow of the air is improved.

 

One oft-overlooked fact is that CD is a ratio, it isn't an absolute number. The effective aerodynamic drag of a vehicle is calculated by multiplying CD by the frontal area of the car. So a tiny car with a bit higher CD is much more aerodynamic than a large car with a bit lower CD. The new Lexus LS430 has something like a .28, which is great, but it isn't more aerodynamic than a smaller sports car with a .32 or .33.

 

Well said

 

As aciurczack said, it has to do in large part with the total frontal area of a car. So with that in mid, a body kit may worsen a car's aerodynamic, unless it was designed correctly for achieving high speed numbers or achieving MPG.

In fact, a spoiler actually adds more drag to a car than actually improving it. Car & Driver did a comparison test with a Mustang in the 1/4 mile ~ 3-4 years ago showing a higher trap speed and slightly better 1/4 mile times in the spoiler-less version. This makes sense as a spoiler, like its name implies, spoils the air flow at the end of the car, thus leading to the eventual creation of downforce at the rear end to allow stability at high speed...triple digits that is (around 150 mph).

 

Interest rates are MUCH higher on my CD's.

 

What about my spoiler? wouldn't that help

 

Nova,

In the looks department, it's a winner! I bet, if you were to take it off your car and do the 1/4 mile, you should see a difference in time and speed, assuming everything else being equal.