Rear Wing Angle

Discussion in 'PSI Superchargers Tech Questions' started by SCO1035, May 6, 2012.

  1. SCO1035

    SCO1035 New Member

    Joined:
    Dec 2, 2007
    Messages:
    155
    Likes Received:
    1
    Looking for advice on how much attack I should be running on my rear wing.
    In the altereds I have run in the past, I have had about 10 degrees, but the dragster I have purchased seems to have more than that.
    250" rear engine dragster with a blown bbc and 'glide.

    Thanks in advance.
     
    #1
    SCO1035, May 6, 2012
  2. secondwindracing

    secondwindracing top alcohol

    Joined:
    Feb 10, 2004
    Messages:
    2,894
    Likes Received:
    7
    in a dragster..0 to 1 1/2..dave
     
    #2
    secondwindracing, May 6, 2012
  3. Scouder

    Scouder New Member

    Joined:
    Jan 2, 2009
    Messages:
    378
    Likes Received:
    0
    Every wing will be different. No easy answer. You're gonna have to experiment.

    -Brian

    PS - Hi Dave!
     
    #3
    Scouder, May 6, 2012
  4. jeffj

    jeffj Member

    Joined:
    Mar 8, 2008
    Messages:
    225
    Likes Received:
    13
    Do exactly what Dave said.
    Jeffj
     
    #4
    jeffj, May 6, 2012
  5. jim@victoryracecars

    jim@victoryracecars Member

    Joined:
    Jan 1, 2012
    Messages:
    58
    Likes Received:
    0
    I agree. :)
     
    #5
    jim@victoryracecars, May 6, 2012
  6. SCO1035

    SCO1035 New Member

    Joined:
    Dec 2, 2007
    Messages:
    155
    Likes Received:
    1
    Thanks guys.
     
    #6
    SCO1035, May 6, 2012
  7. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
    Staff Member

    Joined:
    May 6, 2003
    Messages:
    6,706
    Likes Received:
    133
    wing angle

    first off, it depends on what you are zero'ing against. we all know the pits are not always flat.

    If you know what the motor angle of your car is supposed to be, you can always zero your protractor off the injector plate, if you have a flat surface big enough to stick the protractor and 'zero' off of that.

    Depending on how flat the top profile of the wing, you may or may not be able to just sit your protractor on top of the wing. If it has a curved profile you may have to put a straight edge on top to sit your wing and measure off of that. This is not a 'true' measure of wing attack, but keep in mind that if you set it the same way every time, it's relative.

    Depending on the wing size and profile will determine how much wing you need as your baseline. Then depending on tracks, whether you run 1/4 or 1/8, and other conditions will determine if you need more or less wing.

    I doubt that any single element wing ever needs a true 10 degrees. Most single element wings get into a 'stall' condition somewhere around 6 to 8 degrees. After that you are just making more drag and no more down force.
     
    #7
    Will Hanna, May 7, 2012
  8. 23T Hemmee

    23T Hemmee Member

    Joined:
    Jul 10, 2007
    Messages:
    449
    Likes Received:
    0
    Keep in mind that tire growth on the big end will increase your attack angle also.
     
    #8
    23T Hemmee, May 8, 2012
  9. SCO1035

    SCO1035 New Member

    Joined:
    Dec 2, 2007
    Messages:
    155
    Likes Received:
    1
    In the past when setting wing angles I have done it in my garage. It's a nice flat and level surface. I set the car on the ground with the correct tire pressures and someone sitting in the seat. The wings that I have used have all been flat across the top making it easier to set the angle to what you want it to be, with a little allowance, as Ronny says, for tire growth.
    Thanks to all that contributed.
     
    #9
    SCO1035, May 8, 2012
  10. Kurt - Prostart Race Cars

    Kurt - Prostart Race Cars Member

    Joined:
    Dec 15, 2005
    Messages:
    133
    Likes Received:
    0
    Will pretty much hit all the issues. I set my wings at the shop prior to delivery with an "Incidence Gage or Meter", this is the true cord angle. Then scribe a true zero line in the inside of one spill plate, this way you can measure from now on with any protractor. Knowing the difference between the wing and a part of the car will allow you to adjust on any uneven surface at the track.
    Tire growth on a Dragster is negligible, also if the car is working right could actually go slightly negative in the wing area.
    Kurt


    www.prostartracecars.com
     
    #10
    Kurt - Prostart Race Cars, May 9, 2012

Share This Page





XenPorta 2 PRO © Jason Axelrod from 8WAYRUN.COM