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Wow that's extraordinarily clever for a rear spoiler. I don't think people realize the headaches that a lot of people go through to just get a little aero grip (aero and mechanical grip are two very different things) onto the car without being incredibly intrusive into the body work. Even most wicker spoilers require drilling or intrusive mount work somewhere and this appears to be completely removable with very little to no visual markings.
What is that single exhaust exit setup you're running? Is that something you had one-off'ed?
Wow that's extraordinarily clever for a rear spoiler. I don't think people realize the headaches that a lot of people go through to just get a little aero grip (aero and mechanical grip are two very different things) onto the car without being incredibly intrusive into the body work. Even most wicker spoilers require drilling or intrusive mount work somewhere and this appears to be completely removable with very little to no visual markings.
What is that single exhaust exit setup you're running? Is that something you had one-off'ed?
You're the first person to give positive feedback on it!
Yes the single exit exhaust is a one off. I didn't want it to look like every other Corvette out there.
Arggh! I was hoping you'd say you bought it somewhere. That's the boat I'm in; I would like to run something that others don't have. I've been looking at even adapting things from other cars but it's either 1) cost prohibitive or 2) doesn't really flow well.
You're the first person to give positive feedback on it!
That's because there is a big lack of information here. There is no data on downforce or balancing it with a front splitter, so it just comes off as someone tossing a bunch of random parts on a car.
That's because there is a big lack of information here. There is no data on downforce or balancing it with a front splitter, so it just comes off as someone tossing a bunch of random parts on a car.
I don't have any feedback yet.I just installed it & the next track event isn't until 2018.As far as a splitter goes I don't believe I need one for autocross events.
For autocrossing that would help cornering at some of the higher speed courses. Since you almost never get above 70 mph you do not need the front down force. If I were to run it at a track I would like to have either canards, splitter or both to make the car happy. I have been told by Danny Kellermeyer that for a rear spoiler to be most effective you need 65-67 deg. angle on the spoiler. I have a home made one at 78 deg and was told it wasn't enough angle.
For autocrossing that would help cornering at some of the higher speed courses. Since you almost never get above 70 mph you do not need the front down force. If I were to run it at a track I would like to have either canards, splitter or both to make the car happy. I have been told by Danny Kellermeyer that for a rear spoiler to be most effective you need 65-67 deg. angle on the spoiler. I have a home made one at 78 deg and was told it wasn't enough angle.
The autox events that I attend do go above 70 mph quite often. I hear what you're saying about some front downforce though! Thank you.
I like it! I was not aware a product like this was available for us, but I think it would be perfect for autocross, especially with it's removability! The support rods aren't the most stylish things, but for functionality I think it's great.
Expecting real data on these things, like pounds of added downforce, is unrealistic in my opinion. The only data he needs is how it affects his times. He can (maybe) adjust the angle to find what gives him the most improvement. That is his data.
REKCUF,
I love the bolt on design that doesn't screw up the body work....pretty smart engineering there. Even better is how fast the unit can be removed for street driving if so desired.
I think it is pretty obvious from the design of this rear spoiler that it is a functional hardcore piece that is going to be used on the autocross track or road course. I don't think most people spending time on this section of the forum consider that and only look at the visual and complimentary shape of the product and how it interfaces with the C5.
It is my opinion if you're going to post anything having to do with functional aero on the sacred C5 Corvette, it is best to do in the Autocross and Race section.....otherwise expect a lot of negative responses (which isn't a bad thing and people on this forum have the right to do so).
In regards to the unit working, hell yes it will work, even at slower autocross speeds. Look at the nationally ranked autocrossers and what they are running....If it's good enough for Brian Hobaugh and other nationally ranked autocrossers, it's good enough for me. And since most autocross tracks spend the majority of their time in the 30 mph to 70 mph range, this type of spoiler is perfect.
It is going to be impossible for the maker or designer of any spoiler of this type to give an exact downforce figure. The shape of the car is going to have a huge impact on how this spoiler reacts....even driving with your windows up or down will change the downforce of this spoiler.
The majority of autocross corners are usually under 50 mph so front aero is not going to be as important for balance as it would be on a high speed road course. Run the wing and let us know how it works for you and if there is any vibration or fluttering with the current attachment points.
For modifications like this, my answer is very simple: The proof of the pudding is in the eating.
Does it function the way you want? If it does, then it's great. If it doesn't, then you need to fine tune it. Yes, "Big Red" has a spoiler just like this. They've been campaigning that C2 for 30+ years straight. It's been on every autocross circuit and I assume race track in California and it's so famous that its style was literally replicated in Fast&Furious. I have zero doubt that the spoiler works well on their car because if it didn't, it wouldn't have it for more than a short while. This sort of modification is purely functional and if it functions then excellent!
So OP, since you revived your thread from 2017: How do you like it? Is it giving you mid-corner confidence? Does it allow you to enter a corner hotter? Carry higher speeds? Accelerate harder without losing traction? Are you using it at autox or track or both? What courses? Etc. What's it doing for you, is the question.
12-18-2017, 01:52 PM
