calculate downforce of spoiler?

[krauthead]

Would anyone here be able to calculate the downforce of this rear wing?

[wholberg]

Let's see,

2 feet of 2x4 = 1.5 lbs
3 feet of 2x6 = 6.5 lbs
Assorted screws and fasteners - 2 oz.

Yup! 8 lbs, 2 oz. of downforce.

[silverc4s]

Originally posted by wholberg
Let's see,

2 feet of 2x4 = 1.5 lbs
3 feet of 2x6 = 6.5 lbs
Assorted screws and fasteners - 2 oz.

Yup! 8 lbs, 2 oz. of downforce.

Independent of speed, too!

[Rick V]

Now your figures are forgetting one very important varialbe. Is the lumber treated?
And don't forget about the screws are they A P screws or did he use decking bolts? If nails were used it has to be classed as the gt lightweight version.

This is a prime example of why tigers eat thier young

[wholberg]

If cousin Cletus holds the trunk closed from the inside, then it's 268 pound of downforce.

[DUK]

Have the same picture on the wall of the control room at Aerodyne. It's been calculated and recalculated and it just gets more and more all the time.

[randywebb]

Actually, I bet it does produce some force - tho whether up or down can't be determined... guess the guy (if it's not just a Photoshop image) doesn't know about airfoils.

It will sure add to drag tho.