Drag Racing Tech
Sponsored by:
Sponsored by:

scary back and forth wobble at end of the 1/8th

Thread Tools
 
Search this Thread
 
Old 04-02-2012, 08:59 AM
  #21  
LS1Tech Sponsor
iTrader: (4)
 
MADMAN's Avatar
 
Join Date: Jan 2002
Location: At the track
Posts: 5,295
Likes: 0
Received 4 Likes on 4 Posts

Default

Is the car going side to side or does it feel like the body is rolling side to side?? If its the body then take the tires off NOW. There is a belt broken in the tire. I have seen this before and replacing the rear tires corrected it.
__________________
www.madmanandcoracing.com


225-343-9029
Old 04-02-2012, 09:11 AM
  #22  
Launching!
iTrader: (7)
 
99french's Avatar
 
Join Date: Mar 2011
Location: Oldsmar, FL
Posts: 257
Received 0 Likes on 0 Posts

Default

thats pretty low psi for the qtp as well from my past experience. try and keep it a bit higher. you can call hoosier and see what they suggest i think i ran mine around 17psi.
Old 04-02-2012, 09:12 AM
  #23  
Launching!
Thread Starter
iTrader: (2)
 
aaronware76's Avatar
 
Join Date: Apr 2009
Location: lancaster ny
Posts: 239
Likes: 0
Received 0 Likes on 0 Posts

Default

The whole rear of the car sways side to side and points the front towards the wall, then the centerline causing me to have to compensate. I've only had one night of experience with this. I won't run them again till I can make a change to the setup.
Old 04-02-2012, 09:15 AM
  #24  
Launching!
Thread Starter
iTrader: (2)
 
aaronware76's Avatar
 
Join Date: Apr 2009
Location: lancaster ny
Posts: 239
Likes: 0
Received 0 Likes on 0 Posts

Default

99french, at 17 psi, I blow the tires off at the line. Thats the only reason I drop them down to such a low pressure. But, the sway did get worse as I decreased tire pressure.
Old 04-02-2012, 10:53 AM
  #25  
10 Second Club
iTrader: (8)
 
355z28's Avatar
 
Join Date: Oct 2007
Location: Iowa
Posts: 1,249
Likes: 0
Received 2 Likes on 2 Posts

Default

Originally Posted by aaronware76
The whole rear of the car sways side to side and points the front towards the wall, then the centerline causing me to have to compensate. I've only had one night of experience with this. I won't run them again till I can make a change to the setup.
You haven't messed with your panhard bar lately have you? Something that radical sounds like the panhard bar came loose or you have a broken belt.
Old 04-02-2012, 11:30 AM
  #26  
Launching!
iTrader: (7)
 
99french's Avatar
 
Join Date: Mar 2011
Location: Oldsmar, FL
Posts: 257
Received 0 Likes on 0 Posts

Default

maybe soften the shocks some. but hows your 60'? it can be tricky launching a 6spd with a two step i know that much. i also know there was a world of difference between my trutrak and my locker traction wise, plus i broke the trutrak first time out with my two step. why not switch to a 15" wheel on the rear so you can have some more sidewall?
Old 04-02-2012, 10:15 PM
  #27  
Launching!
Thread Starter
iTrader: (2)
 
aaronware76's Avatar
 
Join Date: Apr 2009
Location: lancaster ny
Posts: 239
Likes: 0
Received 0 Likes on 0 Posts

Default

Nope, pan hard bar is a spohn adjustable, it's fine and the axle is centered. I have the relocation brackets on my 9" also and the control arms are in the bottom hole. My shocks are on the softest setting. My 60' sucks to be honest. I bought the tires and wheels from a older guy on Craigslist with hardly any wear. I only ran them one night. My 60' is a best of 1.68 with those tires. 1.72 on drag radials. I am thinkin about switching to 15" rims for more sidewall. Just gotta come up with the dough.
Old 04-03-2012, 03:59 AM
  #28  
9 Second Club
iTrader: (2)
 
midwestjunk's Avatar
 
Join Date: Feb 2006
Location: Addison, IL
Posts: 268
Likes: 0
Received 1 Like on 1 Post

Default

I had this problem when I had 8" wide rims w 26x11.50 et streets. Sway was real bad at 10-11 psi on the big end. Swapped to a 10" rim and it never did it again.



Quick Reply: scary back and forth wobble at end of the 1/8th



All times are GMT -5. The time now is 11:11 AM.