Lead on rear end

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  • grt74
    Senior Member
    • Jul 2009
    • 1380

    #16
    Originally posted by Jim11h View Post
    So adding weight on tube in simple terms adds rear percentage without body roll effects? Here I was thinking more magic to it like holding LR into dirt better for more grip
    more left side weight = more forward drive, more rear weight = more forward drive, with it on the tube its not so much of a sacrifice because you haven't had much of an effect on the sprung weight,there for the car will act like it has less left side weight in roll = tighter entry to a point depending on how you drive, but as newton has always said for every action there is a reaction, it is by no means a fix all, and there are times it will hurt you, its going to be a trail an error thing, your not going to be able to just bolt it on and win, there are other factors to consider here when you do this

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    • Kromulous
      Senior Member
      • May 2007
      • 3008

      #17
      GRT does that apply to the LF suspension parts as well? More LS% static, and would be unsprung weight.

      I am thinking it would help the car steer better?

      Just say no...

      Comment

      • grt74
        Senior Member
        • Jul 2009
        • 1380

        #18
        Originally posted by Kromulous View Post
        GRT does that apply to the LF suspension parts as well? More LS% static, and would be unsprung weight.

        I am thinking it would help the car steer better?
        too much of anything can hurt you but yes a car with more left side will turn better (left that is)

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        • Aggressor
          Member
          • Dec 2009
          • 62

          #19
          What happens when you take the left rear front shock off the birdcage and clamp it thus leaving the left rear behind shock and spring on birdcage.

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          • RaceEngineer
            Senior Member
            • Oct 2018
            • 482

            #20
            Originally posted by Aggressor View Post
            What happens when you take the left rear front shock off the birdcage and clamp it thus leaving the left rear behind shock and spring on birdcage.
            You have a shock with a more linear travel vs. axle travel, until you wrap up or wrap down the lift arm.

            Comment

            • hunterracing
              Senior Member
              • Jan 2009
              • 303

              #21
              How much ls weight static are we talking

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              • Matt49
                Senior Member
                • Jun 2007
                • 3123

                #22
                Originally posted by RaceEngineer View Post
                You have a shock with a more linear travel vs. axle travel, until you wrap up or wrap down the lift arm.
                I disagree. Assuming we are talking a single indexing birdcage, the shock on the front of the birdcage is going to have a significantly higher motion ratio than a shock clamped to the front of the tube.

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                • RaceEngineer
                  Senior Member
                  • Oct 2018
                  • 482

                  #23
                  Originally posted by Matt49 View Post
                  I disagree. Assuming we are talking a single indexing birdcage, the shock on the front of the birdcage is going to have a significantly higher motion ratio than a shock clamped to the front of the tube.
                  That's what I said. Attached to axle more closely matches axle movement 1:1.More linear. Not more travel.
                  Last edited by RaceEngineer; 03-12-2019, 05:50 PM.

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                  • LRtireCHANGER
                    Member
                    • Mar 2017
                    • 73

                    #24
                    When I watch the xr1 rockets and the Longhorns, many of them seem to have the perfect setup, only they are loose on the very end of corner exit, I think weight on the left rear tube would help with this(along with the wider left rear tire).

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                    • Matt49
                      Senior Member
                      • Jun 2007
                      • 3123

                      #25
                      Originally posted by RaceEngineer View Post
                      That's what I said. Attached to axle more closely matches axle movement 1:1.More linear. Not more travel.
                      Yup. My bad. When I first read your comment I read it that you were saying it would mean more linear shock movement (as in top to bottom linear distance) than when it was on the cage, but you meant the graphed relationship between axle movement and the shock movement.

                      Comment

                      • CCHIEF
                        Senior Member
                        • Jul 2014
                        • 399

                        #26
                        Haven't all sanctions, Super or Crate, banned this practice anyway, no matter how you do it?? (yet likely not policed well, if at all, for the less visible implementations)

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                        • RaceEngineer
                          Senior Member
                          • Oct 2018
                          • 482

                          #27
                          Originally posted by CCHIEF View Post
                          Haven't all sanctions, Super or Crate, banned this practice anyway, no matter how you do it?? (yet likely not policed well, if at all, for the less visible implementations)
                          Probably most. But it hasn't stopped people from piling on axle weight, if they want to.

                          Comment

                          • Matt49
                            Senior Member
                            • Jun 2007
                            • 3123

                            #28
                            Why bolt lead on the axle when you can just buy on of these?
                            Since 1998, PPM Racing has provided the highest quality race car parts to grassroots racing drivers across America.

                            Comment

                            • grt74
                              Senior Member
                              • Jul 2009
                              • 1380

                              #29
                              Originally posted by Matt49 View Post
                              Why bolt lead on the axle when you can just buy on of these?
                              https://ppmracingproducts.com/produc...ar-birdcage-5/
                              they make em heavier than that

                              Comment

                              • Matt49
                                Senior Member
                                • Jun 2007
                                • 3123

                                #30
                                Originally posted by grt74 View Post
                                they make em heavier than that
                                Oh yeah....tungsten, baby!

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