I just bought a new SRT-6 coupe. I love the performance. Can't stand the wing. It looks too boy-racer, impairs rear vision, weighs more and takes away from the original show car design. My car will never be raced and 100% of the time it will be on over-regulated US roads going no more than 85. So, what's the point? Has anyone else removed their (over-compensating?) rear appendage?

 

hum. why get a superchargered sports car if you dont go over 85, and never plan on racing it? Its like getting a F1, but only driving it on your local street.

 

I can't (legally) use how fast it will go.
But I do care how quick it is...in the curves and on the straights.

 

Is that like; why do people buy 4x4 suv's and drive them to the super market?

 

i dunno why they do, maybe because its big enough to take 5 kids to soccer, and it makes them feel safe? And who cars how fast you can legally go. look around on the forum, and almost everyone hit triple digits a few times.

 

Anyone know at what speed the wing is supposed to become effective?
And how effective is it at reducing rear lift?

 

I know that in the manual it says to no operate the car over 57 mph, the speed at which it activates, without the wing activated, because you might lose control and have less stability. But i doubt the wing really does much at that speed. I think i read somewhere it adds 40 pounds of downforce at 100 mph. which isn't much, but it better than nothing

 

I can tell you that beteen 115 and 120 mph you can feel the car squat maybe 2-4 inches.At least it felt vlike that. It would have been tough to ger out and measure it. It is very noticable. But I plead the 5th your honor. As you reduce speed from 150 plus, I didn't notice the car coming back up to normal. I only went that high for a very short period of time on a straight away across aligator alley, I 75. But, I did do it a second time after I picked up the wife at the gas station on the way back to Naples. I have had the same medical condition as SRT SIX, "right foot acceleritis". It seem to come and go, but almost always appears when I get into the Xfire.

 

you didn't? do your car is stuck 2-4 lower? how can that be where there is only a inch or so between the wheel the the top of the well?

 

Just how damn fast have you had it ?

 

The SRT spoiler doesn't really cut down on visibility. It sits low. I have had a number of people think the Crossfire is a Porsche with a whale tail when viewed from the side-rear.

I wasn't too wild about it at first, but it kind of grows on you. Actually I don't think too much about it since I got this permanent smile on my face caused by "right foot acceleritis".

 

120 lbs of down force at 100 mph. The effective speed can be gauged by the function of the wing on the limited edition which deploys at 60-65 mph. The engineers put it there for a reason, probably based on wind tunnel tests at european driving speeds 75+ mph.

I think you'll be fine removing the wing if you keep the car under 85 and don't have a semi truck anywhere near you when you're driving at higher speeds. If you plan on driving long distances at 85mph, all you have to do is put your wife in the trunk.

 

120 lbs for the SRT wing, you know what it is for the regular wing? and the limited goes up at 60-65? my '04 coupe goes at 57, and it says 57 in the manual too.

 

I drove a limited before I bought my SRT and the wing doesn't affect my visibility at all. I have my side mirrors angled out to cover my blind spots.

 

OK, ding me for 3 mph... LOL. Mine used to deploy at 62 before I replaced it.

If memory serves me, it only produces 60 lbs of downforce at 100 mph. But both wings also clean-up the airflow to prevent the vortices effect caused by the unusual shape of the rear-end.

 

my wing on my '04 coupe does block some visibility out the back. it takes about 20% of my rear window. which already isn't much.

 

Mine also deploys at 62-63 mph and your number for downforce is probably pretty close for the coupe. The literature that I got from Chrysler says 40 lbs at 65 mph (but I don't think any of us know for sure).

 

No truer statement was ever posted...

 

I bought a Sapphire SRT-6 Coupe a week ago. I also think the wing is too boy racerish. I do drive my cars fast so I emailed CTD for data comparing the downforce of their rear diffuser (its like a tray under the car) to the regular wing and the SRT wing; I hope they respond.

I want to add that in deciding whether 40 pounds of downforce is significant, you need to know if that's the cumulative effect. ie is that net compared to say a lift factor of 100 pound without the wing which would mean the wing has a 140 pound effect OR does the wing reduce 100 pounds of lift to 60.

I'll post any answer I get from CTD. Vmaxx also sells diffusers.

 

Yikes, an aerodynamicist... Good, we need one of those on this forum... Here's what I know from online research and two years of track experience (my crossfire is only a track car, gutted, caged, etc).

The shape of the body produces a counter clockwise vortice at the rear-end (this is known to me from a wind tunnel test video I found online a few years ago) and a few half-azzed (non-professional) tests we did in November of 2006, when we were trying to figure out the optimum angle of a aftermarket racing wing that I currently have on the car.

That being said, I am assuming that the engineers realized the vortice was causing lift which makes the rear-end less stable as speeds increase. And they needed a QUICK FIX to offset that lift with some form of rear downforce to counteract it. If you look at the photos of the prototype of the crossfire, there is no wing... It must have been during the design / production / testing process that this rear-end lift was discovered and the wing was added.

Again, that being said. I have first hand experience that the OEM wing is effective to a point and does offer enough downforce for the purposes that car was designed for, public highway driving... However, since my crossfire is a track car only, I had to try and create more downforce on the rear, (1st) to offset the removal of the intrusive (negative) effects of the traction control, (2nd) to add more downforce to offset the 400 lbs that has been removed from the car, (3rd) to keep my AZZ firmly planted on the ground in high speed turns.

As far as CTD knowing the specs. of the aerodynamics (wing) to respond to your e-mail, the engineers in charge of the Crossfire here in the USA (Diamler / Chrysler) told me in January of 2006, that they never had a very comprehensive list of the engineering specs from the German factory (MB / Karmann) because everything was handled by the MB factory and was not shared with the "CHRYSLER" staff.

I hope this helps you... I have the aftermarket diffusers and have replaced the OEM wing with a (BUTT UGLY RACER WING) that is fully adjustable, and depending on the track I am running, is capable of producing 200 lbs of downforce at 100 mph.

But then again, my car is on a trailer back and forth from the track...