Rr spring rate when using soft rf

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  • Dirtmod13
    Senior Member
    • Jan 2014
    • 245

    #1

    Rr spring rate when using soft rf

    Have had some success using a soft rf like the new rocket setup, but car is always too loose (but fast) Was wondering if by softening the rf, it needs a softer rr to compensate. I understand that roll couple theory would say after softening front and leaving the rear it would be looser.
  • MasterSbilt_Racer
    Senior Member
    • May 2007
    • 14304

    #2
    Short answer: No. You would be shocked the RR springs some guys are running. It is more of a momentum setup.
    Modern Day Spec Wedge Racing

    Comment

    • RCJ
      Senior Member
      • Nov 2007
      • 509

      #3
      What r/r are some guys running?

      Comment

      • 7uptruckracer
        Senior Member
        • May 2009
        • 1336

        #4
        Would not hesitate with a 350 RR but its a package deal

        Comment

        • billetbirdcage
          Senior Member
          • May 2007
          • 2019

          #5
          Originally posted by 7uptruckracer View Post
          Would not hesitate with a 350 RR but its a package deal
          Why so soft? (grin)

          Comment

          • 7uptruckracer
            Senior Member
            • May 2009
            • 1336

            #6
            Also seen a dual stage that locks out to a 500

            Originally posted by billetbirdcage View Post
            Why so soft? (grin)

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            • Matt49
              Senior Member
              • Jun 2007
              • 3123

              #7
              Originally posted by 7uptruckracer View Post
              Also seen a dual stage that locks out to a 500
              Excellent for hammer down track conditions. Free on entry, free on exit.

              Comment

              • 7uptruckracer
                Senior Member
                • May 2009
                • 1336

                #8
                Originally posted by Matt49 View Post
                Excellent for hammer down track conditions. Free on entry, free on exit.
                I was told they used it to prevent mid corner squat...not sure why but I've seen things on the RR I haven't ever seen it's exciting and frustrating it seems to be a lot like BBSS on asphalt and just as sensitive lol

                Comment

                • fastford
                  Senior Member
                  • Dec 2008
                  • 4059

                  #9
                  any one seen a soft RR with a bump stop? I tkink it would work with with the proper shock , ie: soft comp and stiff rebound....

                  Comment

                  • MasterSbilt_Racer
                    Senior Member
                    • May 2007
                    • 14304

                    #10
                    Originally posted by fastford View Post
                    any one seen a soft RR with a bump stop? I tkink it would work with with the proper shock , ie: soft comp and stiff rebound....
                    I had a deal like that 3 years ago that worked very well at one particular track. 175# RR with a particular rollerskate wheel setup.
                    Modern Day Spec Wedge Racing

                    Comment

                    • 7uptruckracer
                      Senior Member
                      • May 2009
                      • 1336

                      #11
                      I saw a Cone bump on a RR the other week that Shorty setup. Car couldn't get in the corner.....

                      Comment

                      • MasterSbilt_Racer
                        Senior Member
                        • May 2007
                        • 14304

                        #12
                        Originally posted by 7uptruckracer View Post
                        I saw a Cone bump on a RR the other week that Shorty setup. Car couldn't get in the corner.....
                        That can happen. LOL
                        Modern Day Spec Wedge Racing

                        Comment

                        • 7uptruckracer
                          Senior Member
                          • May 2009
                          • 1336

                          #13
                          Originally posted by MasterSbilt_Racer View Post
                          That can happen. LOL
                          Yeah seemed to be getting on it way too late causing loss of side bite

                          Comment

                          • Dirtmod13
                            Senior Member
                            • Jan 2014
                            • 245

                            #14
                            Assuming that's for qualifying right? Can't be good for small track that goes slick for the feature can it?

                            Comment

                            • 7uptruckracer
                              Senior Member
                              • May 2009
                              • 1336

                              #15
                              Depends on the bump stop timing more RR spring can give you entry sidebite there are alot of variables. ALOT.

                              Comment

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