Limited late - z link option

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  • Dirtmod13
    Senior Member
    • Jan 2014
    • 245

    #1

    Limited late - z link option

    Ran 3 practice sessions with the clamped in front of the left rear. Car was really fast. Track owner took away the option to use clamped up. Now Only 2 options are bolted to birdcage ( so it rotates away from the spring in the corner) or z-link. Now i can see how the z- link would rotate into the spring just like a clamped up setup, but is a z- worth trying? Another car there had it and he looked to be quicker than the others. Does anyone still use this setup? What spring?
    Last edited by Dirtmod13; 04-28-2015, 08:36 PM.
  • 2old4this
    Senior Member
    • Jan 2014
    • 137

    #2
    Call cj rayburn he will talk to you no matter what car you have.

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    • Bcollins82
      Senior Member
      • Jul 2009
      • 322

      #3
      They won't let you put it on the forward arm and run it on swingarm?

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      • save the racers
        Senior Member
        • May 2013
        • 271

        #4
        We ran a z-link with spring on the swing arm car .It was easy to set up and adjust, had a wide sweet spot.Best i remember had a 400 r/s spring,500 l/s with at least 150lbs of bite.

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        • Dirtmod13
          Senior Member
          • Jan 2014
          • 245

          #5
          Originally posted by save the racers View Post
          We ran a z-link with spring on the swing arm car .It was easy to set up and adjust, had a wide sweet spot.Best i remember had a 400 r/s spring,500 l/s with at least 150lbs of bite.
          Yeah, rule is 4 link or zlink only. Coil over must attach to birdcage. No clamp.Must be mounted in front of axle on left rear. Everything else is open. But we have a shock rule so no adjustable or re-valved shocks. Installed zlink tonight and cycled it through. Doesn't rotate a whole lot into spring. But definetly more than the 4 link with spring attached ahead of axle on birdcage on LR. Tried soft spring to get some preload and have spring rate on LR at full drop but even at 125# it has a couple inches of gap between spring and top of coil over cup/ mount. 225# had 4" of gap.

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          • MasterSbilt_Racer
            Senior Member
            • May 2007
            • 14324

            #6
            Originally posted by Dirtmod13 View Post
            Yeah, rule is 4 link or zlink only. Coil over must attach to birdcage. No clamp.Must be mounted in front of axle on left rear. Everything else is open. But we have a shock rule so no adjustable or re-valved shocks. Installed zlink tonight and cycled it through. Doesn't rotate a whole lot into spring. But definetly more than the 4 link with spring attached ahead of axle on birdcage on LR. Tried soft spring to get some preload and have spring rate on LR at full drop but even at 125# it has a couple inches of gap between spring and top of coil over cup/ mount. 225# had 4" of gap.
            Need really long trailing arm.
            Modern Day Spec Wedge Racing

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            • Dirtmod13
              Senior Member
              • Jan 2014
              • 245

              #7
              Originally posted by MasterSbilt_Racer View Post
              Need really long trailing arm.
              Top / rear , used the longest bar we could find. Wondering about indexing birdcage a little bit differently, wonder if that'll get the wrap into the spring. Wondering about that for the 4 link also. Since its mandated to be in front- it indexes away from the spring. But maybe indexing and maybe moving one or the other closer/ further from the normal mount on points where bars bolt to birdcage we could lessen that negative effect.

              Comment

              • MasterSbilt_Racer
                Senior Member
                • May 2007
                • 14324

                #8
                Originally posted by Dirtmod13 View Post
                Top / rear , used the longest bar we could find. Wondering about indexing birdcage a little bit differently, wonder if that'll get the wrap into the spring. Wondering about that for the 4 link also. Since its mandated to be in front- it indexes away from the spring. But maybe indexing and maybe moving one or the other closer/ further from the normal mount on points where bars bolt to birdcage we could lessen that negative effect.
                The old Rayburn geometry with 32" trailing arm works pretty well for your application.

                You could move the lower link closer to the axle and get a lot of angle in it. 20 degrees at least
                Modern Day Spec Wedge Racing

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                • save the racers
                  Senior Member
                  • May 2013
                  • 271

                  #9
                  We added the longer rear bars the second year.The car was very quick on the little bull rings.We could get it to hike the l/r up high if we wanted.It was never any faster like that.

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                  • Dirtmod13
                    Senior Member
                    • Jan 2014
                    • 245

                    #10
                    Update. First race, first ever feature win in Usra limited late model class. I appreciate all the help and discussion/ ideas all of you have given to my posts and others as well.I think it was possible only because of things you guys have posted and taking the time to help us guys out. Thank you.

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                    • MasterSbilt_Racer
                      Senior Member
                      • May 2007
                      • 14324

                      #11
                      Nice of you to let us know. Congrats!
                      Modern Day Spec Wedge Racing

                      Comment

                      • TheJet-09
                        Senior Member
                        • Jul 2013
                        • 1616

                        #12
                        Congrats on your win! Now your competitors are going to be looking at what you're doing.

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                        • Dirtmod13
                          Senior Member
                          • Jan 2014
                          • 245

                          #13
                          Originally posted by TheJet-09 View Post
                          Congrats on your win! Now your competitors are going to be looking at what you're doing.
                          Right?! So we need to cover the rear end because what we did is so simple if they see it they'll duplicate it. What is the rear cover called and where do u get them. Some are printed.

                          Comment

                          • Punisher88
                            Senior Member
                            • Nov 2014
                            • 495

                            #14
                            Modern Images can make them for you and if you get him to do your wrap he can even print them to line up with your wrap and match it when on the car. Tell him Russ Ogletree sent you if you contact him.(706) 681-4665

                            Comment

                            • Punisher88
                              Senior Member
                              • Nov 2014
                              • 495

                              #15
                              Kind of interested in clamping the left rear like was discussed earlier? Is there a specific bracket you buy to do this and do you remove the traction shock and just clamp the shock with the spring in front of the axle to wrap into the spring when under throttle? Thanks for any info.

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