Spring Load

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  • dirtdiggerracing
    Senior Member
    • Jan 2008
    • 153

    #1

    Spring Load

    When putting rear coilover on a load rate setting your center-center length to Ride Height what is the load difference in the Left & Right side ?? THANKS For THE Help !!
  • Dirt2727
    Senior Member
    • May 2008
    • 161

    #2
    Wouldnt that depend on how much bite you run?

    Comment

    • MasterSbilt_Racer
      Senior Member
      • May 2007
      • 14324

      #3
      Originally posted by Dirt2727 View Post
      Wouldnt that depend on how much bite you run?
      And a bunch of other geometry variables
      Modern Day Spec Wedge Racing

      Comment

      • Matt49
        Senior Member
        • Jun 2007
        • 3123

        #4
        You need to measure the center-to-center while it is on the car sitting at ride height. Then record what the load is at that distance in your smasher. Then when you change springs you just need to get the load the same at the same center-to-center distance in the smasher.

        Comment

        • dirtdiggerracing
          Senior Member
          • Jan 2008
          • 153

          #5
          Yes it depends on some variables! ! I am asking because my car has like 250# on RR and almost 800# on LR !!I think that is way to much split !! I have no side bite in the slick !! Other cars I help with only has 110-170 # of split across them! BTW I build and sale the load raters if anyone needs one they are very nice I can send pictures of them !! Thanks for info

          Comment

          • dirtdiggerracing
            Senior Member
            • Jan 2008
            • 153

            #6
            ^^^ this is with 120# bite !!

            Comment

            • Matt49
              Senior Member
              • Jun 2007
              • 3123

              #7
              You lost me...You're saying you have 120 pounds of bite but that you have 800 pounds on LR and 250 pounds on RR. That's 550 pounds of bite which is almost impossible. I'm missing something here...
              What are your scale numbers?

              Comment

              • MasterSbilt_Racer
                Senior Member
                • May 2007
                • 14324

                #8
                I think he is taking about spring loads. Not tire loads.
                Modern Day Spec Wedge Racing

                Comment

                • grt74
                  Senior Member
                  • Jul 2009
                  • 1380

                  #9
                  im going to set back and watch on this one there are alot of opinions on this,even from the top engineers,and i hate to speak because there are so many different ways to explain this

                  Comment

                  • Brian Gray
                    Senior Member
                    • Feb 2012
                    • 1102

                    #10
                    So let me clarify. You are getting 120lbs of bite when the car is sitting on the scales . Then when you do your load rating your getting a much larger split.

                    This has everything to do with your leveraged wheel ratio. You can have that situation based upon your shock mounting at the chassis as well as variations of birdcage location, shock Angle ect. Is there a right or wrong ? Yes and no. It all depends on what load you are trying to achieve at the particular amount of travel. Dynamicly .
                    Having a high static load will slow your transfer even if the spring rate is low on your lr. This may contribute to your problem.

                    Without knowing more about your initial setup I would look at first at the distance from contact patch to mount on bc. As well as the angle of the shock and spring. Removing the angle and lowering the wheel rate ratio will bring that static load rate down and increase transfer to the rr which should help the side bite.
                    Keep in mind a high compression clamp in the shock will influence those readings on the machine so make sure you are allowing time to bleed that pressure off.
                    Shocks by BGR army

                    Comment

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