Page 1 of 3 123 LastLast
Results 1 to 10 of 26

Thread: Launch Tuning

  1. #1
    Junior Member SHOW GUEST
    Join Date
    Jun 2007
    Posts
    9

    Launch Tuning

    Hi All, To cut to the chase my car seems to launch hard and go straight during the day (wheels up 6.80's) on a clean track. later on after the cool down and track rubbers up it pulls hard left on launch. Is there any way to get a happy medium on this? I needed ladder bar preload on RR to make it work early but now after dark it almost seems like it's too much. Ladder bars are non adjustable so I have to remedy this with shocks or pressures. Shocks are now at 90/10 and 50/50. Thanks for any suggestions!

  2. #2
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
    Join Date
    Mar 2008
    Location
    Emmett, Idaho
    Posts
    7,334
    Lower pressure on right side to essentially make the tire diameter smaller, putting little 'wedge' in it to pull it to the right.
    TRUTH is HATE
    to those who
    HATE TRUTH

    God Bless our folks in uniform
    "We the People, have your backs"
    http://www.racingjunk.com/profile/279898

  3. #3
    Junior Member SHOW GUEST
    Join Date
    Jun 2007
    Posts
    9
    right is border line too low at 9, had 9.5-10 in LR to try to correct but no effect. I'm afraid if I add to LR it will lose traction and make it worse. they are 29 12 15 D05 Hoosiers
    Thanks!

  4. #4
    Senior Member RACING JUNKIE
    Join Date
    Dec 2007
    Location
    ohio
    Posts
    810
    Have you checked, the roll out on your slicks?

  5. #5
    Senior Member MASTER BUILDER
    Join Date
    Sep 2005
    Posts
    134
    If your shocks are adj. you can try more rebound at the left front maybe 70/30.Or if you have travel limiters take some out of the left front.Either will slow the transfer to the right rear.Bill.

  6. #6
    Junior Member SHOW GUEST
    Join Date
    Jun 2007
    Posts
    9
    Thanks for the input guys, I'll check the roll out in the back again but it was pretty close before. Bill, if I install some screws in my upper A arm that will bottom out on rise how much should I limit it vs how it was to see some difference? couple of threads, 1/4" 1/2" ect. I think making that mod now will be better for the future adjustability anyway. Simple enough to try the shock adjust too.

  7. #7
    Senior Member MASTER BUILDER
    Join Date
    Sep 2005
    Posts
    134
    Jack the front up with both wheels hanging.Measure from the fenders down to the tops of the tires,set your stop so the left side is 1 inch less at the tire.Try that.If you you have single adj.shocks you will be taking out compresion when adding rebound,try the the brakes before jumping on them at the strip.The left front might dive.Good luck gitting it strait.Bill.

  8. #8
    Senior Member SENIOR BUILDER
    Join Date
    Feb 2005
    Location
    LAWTON MI
    Posts
    113
    Quote Originally Posted by dirt91
    right is border line too low at 9, had 9.5-10 in LR to try to correct but no effect. I'm afraid if I add to LR it will lose traction and make it worse. they are 29 12 15 D05 Hoosiers
    Thanks!
    Ok correct me if in wrong but hoosier has not made the D05 in that size in 4 or 5 years so maybe the slicks are done

  9. #9
    Senior Member SENIOR BUILDER
    Join Date
    Feb 2005
    Location
    LAWTON MI
    Posts
    113
    Double posted dam phone

  10. #10
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
    Location
    La.
    Posts
    2,890
    I'm having a little problem understanding this problem, correct me if i'm wrong, but if the car hooks good and goes straight on the launch, why would you care if the left front tire is carried a little higher and long if the car is performing consistently. My car has always pulled the left front tire higher than the right side (4 link setup). We scaled it a couple yrs ago and did all the correct adjustments, the car runs straight as a bullit but still lifts the left front tire about 4" while the right is barely touching the track. It used to do 4 ft wheelies before scaling the car.

    JMO

    Zip.


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Email us - Support@RacingJunk.com
Call us - 866.326.9227
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy