Double lift

Discussion in 'Race car chassis tech' started by chrome yellow, May 13, 2012.

  1. chrome yellow

    chrome yellow Well-Known Member

    Watching video in slow motion of passes made last night and the car leaves the line straight, front end picks up even then it drops down and picks back up again. Engine runs fine, no hesitation that could explain it. 8.5 rear end, boxed lower controll arms, air bag on the pass side, 10.5 slicks and front competiion 3 way adj shocks. I have the front shocks set at 90/10. Dont remember what the middle setting is 70/30 ? Should I try that setting or look somewhere else? I did run the fastest ever with this car, 7.35 @ 92 in the 1/8 but am thinking the front end coming down then back up is not good. Any thoughts on this? thanks, Brad.
     
  2. 462 Chevelle

    462 Chevelle 462 chevelle

    does it have jet extensions? kinda sounds like the suspension is unloading. do you have front travel limiters? does the rear squat before the car takes off? or does the back raise? what rear shocks? are your front control arm bushings set loose?
     
  3. chrome yellow

    chrome yellow Well-Known Member

    Yes extensions, rear squats, no lift at all. front bushings are all newer. Some crappy shocks on back, could use an upgrade to them. Car looks great on launch except for the xtra lift.
     
  4. 462 Chevelle

    462 Chevelle 462 chevelle

    are you sure that the left front tire isnt coming off the ground and its just kind of bouncing?

    ---------- Post added at 07:22 PM ---------- Previous post was at 07:21 PM ----------

    a real good video would be nice.
     
  5. chrome yellow

    chrome yellow Well-Known Member

    No, tire not coming off the ground. close. They both come up even. Ill try and post a video.

    ---------- Post added at 08:20 PM ---------- Previous post was at 07:26 PM ----------

    http://www.youtube.com/watch?v=PfbhjrcOgC4 Maybe this works? Its hard to see unless you can slow motion it .
     
  6. 462 Chevelle

    462 Chevelle 462 chevelle

    hmm it seems like the compression setting is too loose? maybe worn out shocks? its like it hits max travel and bounces straight down.
     

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