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Yeah, at 180 MPH.......It's effectiveness is legitimate but seriously hyped...
A Cessna will start to take off at 63mph, so I’m assuming the spoiler starts to begin doing it’s thing at around the same speed, even though full effect may not be reached until triple digits.
A Cessna will start to take off at 63mph, so I’m assuming the spoiler starts to begin doing it’s thing at around the same speed, even though full effect may not be reached until triple digits.
A Cessna will start to take off at 63mph, so I’m assuming the spoiler starts to begin doing it’s thing at around the same speed, even though full effect may not be reached until triple digits.
The lift of a wing with laminar airflow over it is quadratic with respect to speed. Quadratic means x**2.
The Z51 has 2 wings on each side and a spoiler in the middle and is supposed to have 400 pounds of downforce.
The high wing is a pure wing and is supposed to have 500 pounds of downforce.
Both of those numbers are at the highest velocity the car can achieve which is about 184 MPH.
So, at 92 (=184/2) the Z51 wing has 100 pounds of downforce while the High Wing has 125 pounds.
At 61 (=184/3) the Z51 wing has 44 pounds of downforce while the high wing has 55 pounds.
and so on.....
I could see that high wing coming in handy if you arrive at a party an realize your jacket is wrinkled. Just grab your travel iron and there you go.
I could only find the file photo of the c5 high wing.
A Cessna will start to take off at 63mph, so I’m assuming the spoiler starts to begin doing it’s thing at around the same speed, even though full effect may not be reached until triple digits.
Lol, my Cirrus takes off at 73 knots, with 50% flaps
First time poster, regarding the spoiler. Choices are:
No spoiler
Low spoiler as part of Z51
High spoiler
As part of the Z51 package, the low spoiler is optimized for higher speed performance
So what is the logic behind the high spoiler?
Actually the Z51 low spoiler has more drag, not sure how it's optimized for higher speed performance as the base stingray is rated at a higher 194mph compared to the z51's 184 mph. This is all in the service of having more control around a track. The Z51 is intended for track after all. As I understand it, the high wing (not spoiler) is a happy medium where there's more downforce (for control) and less drag (for higher speed)
Last edited by khanmark196; Aug 22, 2019 at 05:26 PM.
To many guys, the C8 looks much better without the Z51 spoiler. We have discussed this for well over a year. Some are hoping that the Z06 comes with "Active Aero" so we won't have the spoiler to destroy the cool lines of the C8. However, if you plan to drive the car fast on the track it may make sense to opt for the larger spoiler and it also looks better to some. So Chevy provides 3 options regarding the spoiler hoping to satisfy all the C8 buyers, a decent plan.
Actually the Z51 low spoiler has more drag, not sure how it's optimized for higher speed performance as the base stingray is rated at a higher 194mph compared to the z51's 184 mph. This is all in the service of having more control around a track. The Z51 is intended for track after all. As I understand it, the high wing (not spoiler) is a happy medium where there's more downforce (for control) and less drag (for higher speed)
The wing creates more downforce, that lowers Top Speed on straight ways, but what it loses on straight away it makes up in the curves with it added traction due high down-force at lower RPMs also.
If I read the info correctly, the C8 spoiler creates can create up to 400 lbs of downforce. I have not seen any info on how much downforce the High Wing can create (it's adjustable,, an maybe GM will release at lease Downforce numbers for X number of FT-Pounds at at X number of angles. settings to help owners who plan to tract their cars.)
The car below (a Viper) wing, can create up to 1100 lbs of down force, that slows it Top Speed at the at the Ring to 177 MPH on the straightaway. What time wise on the straight(s)it lost, it more than made up in turns with added grip. It's overall time was better than the Corvette's, but the Corvette had a higher Top Speed. It's on the internet, it must be TRUE... If you noticed it also is running a Spoiler Too.
Picture below is of a Friend's Viper he Tracks (use to Tract Corvettes, but due to blowing LS3 engines due to oil scavenging problems he gave up.
The C8 I'm buying is spec'ed out as a Track Car. My friend (the owner of that Viper) will be the doing Testing after he gets use to the car's manners with both stock tires, and Hoosiers on some of the Tracts he will be competing at, to see how it performs compared to both his Viper, as well as other generation(s) of Corvettes. Why not me? I'll attempt , but it will be a 1st time attempt at it, an I'll be 76 yrs old by the time car is delivered. If there is a class for Geriatrics an I can get a License, I might attempt to learn how to tract it to the Best of my abilities...LOL
If I read the info correctly, the C8 spoiler creates can create up to 400 lbs of downforce.
Ah, ah, ah...careful. I read this as the Z51 PACKAGE as a whole generates 400lbs of downforce at 180MPH. If someone said that the body shape generates more downforce total than the spoiler does, I'd 100% believe it.
If you noticed it also is running a Spoiler Too.
The factory spec'ed ACR doesn't have that spoiler which is native to the TA cars. Looks like your buddy had his viper custom built as that wing is definitely not the ACR's wing. Not to say that wing is being improperly used but not the ACR's wing nonetheless. It could be less, could be more too. Here's a factory ACR:
No additional spoiler, just a decklid lip. I wonder what that spoiler is actually doing with that wing. If I were to GUESS, and I'm just guessing, it's probably actually hurting his aero not helping because that's a lot of things going on in the back of the car. But only a wind tunnel could tell you that.
Ah, ah, ah...careful. I read this as the Z51 PACKAGE as a whole generates 400lbs of downforce at 180MPH. If someone said that the body shape generates more downforce total than the spoiler does, I'd 100% believe it.
The factory spec'ed ACR doesn't have that spoiler which is native to the TA cars. Looks like your buddy had his viper custom built as that wing is definitely not the ACR's wing. Not to say that wing is being improperly used but not the ACR's wing nonetheless. It could be less, could be more too. Here's a factory ACR:
No additional spoiler, just a decklid lip. I wonder what that spoiler is actually doing with that wing. If I were to GUESS, and I'm just guessing, it's probably actually hurting his aero not helping because that's a lot of things going on in the back of the car. But only a wind tunnel could tell you that.
Looks like that wing has 2 functions on it, as there is a lower wing on it that looks similar to the C8's Spoiler design, with openings on ends between the lower portion an upper portion.
His may be a Carbontech aftermarket one. I know it did not come on car. That's why the spoiler is own it.
How does car perform? Good enough to best a MaClaren by .3th of a second over 7 different track setups. Also in 2018 at the Museum track he was 1st place at one of the sanction shootout there. I'll have to remember to ask him Saturday or Monday if he has any data on it down-force of wing, with or with out the spoiler. I know the Wing did improve his times at same track, but part of that could be learning curve improvement due to seat time.
By the way I thought I saw a picture of C8 doing wind tunnel test with both items on it. May have been a computer wind test simulation program like I saw being used 25 years ago on aircraft designs, were they were trying to cut down on drag yet maintain lift or control of plane.
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.
Spoiler confusion
