rtj
Well-known member
- Joined
- Nov 5, 2011
- Messages
- 2,973
We also used propylene glycol for smoke fluid.
has anyone done aero testing on a flat back window vette? more specifically, does the spoiler need to be above the roofline, or would a 80 up deck spoiler be as effective?
And yes, I do plan on up to 180 mph speeds.... and a sign on the back of my car that says "if this car is on a trailer, please call the police because it's being stolen"
Remove the spoiler? okay, where would you store it to get it to the track?
Those big wings must cost a ton of HP. I bet it slows the car down by 20 mph.
has anyone done aero testing on a flat back window vette? more specifically, does the spoiler need to be above the roofline, or would a 80 up deck spoiler be as effective?
And yes, I do plan on up to 180 mph speeds.... and a sign on the back of my car that says "if this car is on a trailer, please call the police because it's being stolen"
Remove the spoiler? okay, where would you store it to get it to the track?
It`s doubtful in my mind that that silver thing goes fast enough to need all those ricer bolt on`s, ..............
I disagree. There is no speed threshold where aero suddenly "kicks in".
It's called a knee point on a non-linear function. Even a half assed engineer knows that.
You have no clue how fast, or what kind of cars I've driven. (FWIW I have first hand experience with the aero/handling difference between a non-winged and a winged sprint car.
.
here's a graph i found. I would have thought the slope would have been greater. Its a squared function.
at 60 mph (100 km/hr) it shows 100 Newtons or about 22 pounds downforce. That's pretty insignificant.
at 120 mph (200km/hr) it shows 380Newtons or about 80 pounds downforce. Nothing to write home about.
The formula for downforce of a wing is given by:
Where:
D is downforce in newtons
WS is wingspan in metres
H is height in metres
AoA is angle of attack
F is drag coefficient
ρ is air density in kg/m³
V is velocity in m/s
It`s doubtful in my mind that that silver thing goes fast enough to need all those ricer bolt on`s, ..............
I disagree. There is no speed threshold where aero suddenly "kicks in".
It's called a knee point on a non-linear function. Even a half assed engineer knows that.
Nonsense.
Give me some facts or data, not some smartass post.
What about to the luggage rack? I used to be all turned on w/Pro Touring.
What happened to the Touring part? How long would you want to drive a
750 hp race car that does everything better than a stk w/o trunk or rack. At the expense of comfort and damm the cost!
I called my car semi-pro touring, now I'm thinking of the older Grand Touring
cars a model.
Anyway, what about a 8-10 in spoiler set at about 60* from vert?
I'm waiting for some enterprising member to do some testing w/spoiler
extension and yarn.
I think that getting downforce in the rear w/o massive drag will be more difficult that in front. I noticed that I have a few things hanging under the car, looks like the heater core hose is a bit low.
R