Keeping the LF on the ground

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  • TwistedFrame21
    Member
    • Oct 2012
    • 54

    #1

    Keeping the LF on the ground

    We are having trouble with the LF off the ground a good 6-10". We are running 57.6 rear, 30lbs bite, 51.6 left side. 1/4 trail 550lf 600rf 175lr 200rr most of our tracks have been on the bottom all year and we are really struggling being consistent on the tires.
  • TwistedFrame21
    Member
    • Oct 2012
    • 54

    #2
    Forgot to mention J bar is level with pinion on QC with 6" of rake. 4 1/4 chain drop

    Comment

    • junebug
      Senior Member
      • Dec 2007
      • 363

      #3
      I would try bumping up left side to atleast 52.5 that should help

      Comment

      • TwistedFrame21
        Member
        • Oct 2012
        • 54

        #4
        Would going from a 3-4 rr shock to a 4-4 help at all?

        Comment

        • washeduptoo
          Senior Member
          • May 2007
          • 1353

          #5
          Things to try, take lr upper bar angle out some, take some jbar rake out(raise on pinion), shorting lr drop. Try one at a time to see if that helps, I would try jbar 1st and best of luck.

          Comment

          • powerslide
            Senior Member
            • May 2007
            • 2696

            #6
            Raise J-bar on pinion to top. Take 1/4in of drop out. Try again. Might also reduce rear%.

            Where is your lead stacked?

            % with or without driver?

            Comment

            • junebug
              Senior Member
              • Dec 2007
              • 363

              #7
              I don't think a stiffer rr comp would do much other then slow down how soon it get in rr and lifts lf but it prolly willbstillndo it just later

              Comment

              • TwistedFrame21
                Member
                • Oct 2012
                • 54

                #8
                I just can't figure out how these guys are burying the RR and RF but still have the LF planted

                Comment

                • junebug
                  Senior Member
                  • Dec 2007
                  • 363

                  #9
                  The lower u go on the rf the harder it is for the lf to be in the air ...how much travel do u have on rf? Softer spring may help...that along with more left side are two things I'd look at

                  Comment

                  • RaceMentally
                    Senior Member
                    • Nov 2013
                    • 137

                    #10
                    Get the right side slammed. What's your left upper angle overall and is it 17"? If so shorten that thing up! Leave the J bar rake. We run way more than that hahaha. Get left side percent up as well. Taller LF ball joint get in there. is the LR spring still loaded at full hike? Should be if you're at 4.25"...
                    When it seems all eyes are on you when you're wearing a new pair of jeans you wonder why everyone thinks you look so darn good in them. When taking them off you notice the sticker still on the pant leg.

                    Comment

                    • TwistedFrame21
                      Member
                      • Oct 2012
                      • 54

                      #11
                      17 on top 15s on bottom. Around 47 degrees at full drop. Have tall ball joint in there already. LR is preloaded at full drop. I've noticed all the fast guys that are dominating my area have the j bar clear to the bottom on the pinion. I've been moving both sides down slowly but it seems like LF comes up more as I do this. Are they running less rake or more rake to plant the LF ??

                      Comment

                      • JustAddDirt
                        Senior Member
                        • May 2007
                        • 1893

                        #12
                        while lowering the j-bar on both mounting positions you are effectively lowering rear roll center, and making all the weight above that point want to flop over on the RR tire.
                        Typically I do not move the chassis mount, but, I start out night at pinion centerline, and move down as track slicks off.
                        I think there should be lifeguards in the genepool.

                        Comment

                        • RaceMentally
                          Senior Member
                          • Nov 2013
                          • 137

                          #13
                          Also what's your rear end offset. RF to rr?
                          When it seems all eyes are on you when you're wearing a new pair of jeans you wonder why everyone thinks you look so darn good in them. When taking them off you notice the sticker still on the pant leg.

                          Comment

                          • mod88s
                            Senior Member
                            • Dec 2008
                            • 226

                            #14
                            Why are you worried about pinning the LF tire? How is your car handling? Are you competitive? Is it too tight or too loose?

                            Comment

                            • TwistedFrame21
                              Member
                              • Oct 2012
                              • 54

                              #15
                              Originally posted by mod88s View Post
                              Why are you worried about pinning the LF tire? How is your car handling? Are you competitive? Is it too tight or too loose?
                              Car is too tight all around. We have went from 70 to 30lbs of bite. We cannot make consistent laps and struggling to be competive.

                              Comment

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