Nice wind tunnel shot

[Bob Drury]

  If you go to http://www.dragracingonline/agent1320 there is a great shot of Alan Johnson's new Mopar Pro Stocker in a wind tunnel that shows amongst other things why you don't want a low scoop on the hood of a race car.  The difference in low and high pressure air is quite evident and also shows why funny cars run such a high wickerbill to gain traction on asphalt.               Bob

[sabat]

Assist, and thanks  

http://www.dragracingonline.com/agent1320/2014/1320-xvi_3-14.html

[tauruck]

How come the guys in these tunnels never hold the smoke generator close to the floor?.

I want to see the air flow around the splitter.

[Seldom Seen Slim]

It's time for SSS to ask another one that many know, I'll betcha.  What's a "wickerbill"?

[Stan Back]

Usually $5 to $10, depending on height.

[manta22]

...rim shot, please! 

[interested bystander]

Wicker bill is a Gurney lip. Across the Pond is is a definition of part of one's private parts (male)!

Thanks to the aforementioned Stan Beck who donates his issues of Automobile magazine to the home , this month's  has the intro of the Dodge Dart featured.

Using a well worn phase, if that thing in the tunnel is a Dart, my Uncle's my Aunt!

[Seldom Seen Slim]

Male private parts are one thing that I think I know -- but a Gurney Lip?  You guys aren't helping me very much.  Thanks for trying, though. . .

[Dynoroom]

We would slide in different Gurney lips to balance speed with handling just before qualifying.

Hope that helps.......     

[Peter Jack]

I`ll try Jon. On most serious race car rear wings there`s an L shaped lip across the trailing edge. It can usually be changed to vary the height and thus the airflow. This has a very noticible effect on the efficiency of the wing. The L shaped piece is a Gurney lip on this side of the pond or a wickerbill over `there`.

Pete

[hotrod]

It got its name due to Dan Gurney's use of the technique to quickly tune the down force on a rear wing.

It is a small vertical lip at the trailing edge of a wing (hence the name lip) which significantly increased down force for a very small increase in drag.
It's primary advantage is that they can be engineered to be easily changed during a pit stop to increase down force or reduce it by simply sliding out one lip and inserting one of a different size.

It was a spur of the moment invention that revolutionized racing.

http://www.insideracingtechnology.com/Resources/gurneyflap.gif

http://allamericanracers.com/the-gurney-flap/

[WOODY@DDLLC]

According to conventional wing wisdom it really should not work! 
But this is what happens [sometimes] when you deal with hot rodders!   

[4-barrel Mike]

“The purpose of science is to explain how hot rodders do what they do.” – Scott Guthrie (IIRC)

Mike

[gkabbt]

Using a well worn phase, if that thing in the tunnel is a Dart, my Uncle's my Aunt!

Just saw this thread!
IO.....ROTFLMFAO!               

Looks like NHRA is going/has gone the NASCRAP route!

Gregg

[Seldom Seen Slim]

Here's a link to a Bangshift.com page that holds a video of a car that ran for the first time at SpeedWeek '13.  Here it's tested in the A2 wind tunnel.  If you were there you probably will recognise it.  I didn't bother to create a new topic for it - that's why it's on this one.

http://bangshift.com/bangshift1320/watch-incredible-stupidbaker-land-speed-car-get-wind-tunnel-tested-a2-wind-tunnel/

I corrected my error - which Mr. Kitchen was kind enough to point out to me ( not to all of you).  Thanks.