Experimenting With body and aero.

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  • Jking24
    Senior Member
    • Oct 2017
    • 1519

    #16
    Their are dimensions in the rule book that would pretty much prevent the body's from being so out of wack but they don't check them. I mean when is the last time anybody seen the width at the bottom of the doors checked or the top for that matter

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    • MasterSbilt_Racer
      Senior Member
      • May 2007
      • 14324

      #17
      Originally posted by Jking24 View Post
      Their are dimensions in the rule book that would pretty much prevent the body's from being so out of wack but they don't check them. I mean when is the last time anybody seen the width at the bottom of the doors checked or the top for that matter
      That's been the issue for years. Not checking and sometimes even dropping rules. They were checking that straight line on the right side for a while. High point of fender back to rear of rr quarter. Couldn't be more than 1" gap anywhere. At EB, cars were 4" on that measurement.
      Modern Day Spec Wedge Racing

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      • Jking24
        Senior Member
        • Oct 2017
        • 1519

        #18
        Originally posted by MasterSbilt_Racer View Post
        That's been the issue for years. Not checking and sometimes even dropping rules. They were checking that straight line on the right side for a while. High point of fender back to rear of rr quarter. Couldn't be more than 1" gap anywhere. At EB, cars were 4" on that measurement.
        I noticed that aswell and when i mentioned it to Someone they said " oh no it's not from the fender top its from the back of the fender" it definitely didn't used to be

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        • over4T
          Senior Member
          • Feb 2015
          • 1108

          #19
          We were looking at a new(ish) full roller, bodyless chassis in the shop the other day and discussing this bent body deal and came up with a couple of ideas.
          Considered that if you cut the chassis tubes, from side to side, through the middle and hinged it and mounted an air bag system to let it go back to normal for the trailer you wouldn't have to waste a gallon of WD 40 and plexiglass the trailer walls. The airbags would allow the Pierce-type wall bangers to soften the beatings and help save the quarters and spoilers. Bags also could make for constant adjustment of the deck heights. Ask the lowriders in your area if you need help with this. Some of those guys are very creative with 'bags.
          Of course there's a few things that we didn't figure out yet; drive line alignment things, steering problems, things with constantly moving rear tires, the extra batteries weight, educating the driver to about completely change the way to drive and, obviously, a few things we haven't considered yet.
          Good old 4m has some bright minds (and some not so much) that can surely figure these out. Guys?

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          • MasterSbilt_Racer
            Senior Member
            • May 2007
            • 14324

            #20
            Originally posted by Jking24 View Post
            I noticed that aswell and when i mentioned it to Someone they said " oh no it's not from the fender top its from the back of the fender" it definitely didn't used to be
            I guess someone convinced Francis it was a bad rule.
            Modern Day Spec Wedge Racing

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            • TheJet-09
              Senior Member
              • Jul 2013
              • 1616

              #21
              I got to watch a few of the Florida races online, and the overhead or drone shots really gave a good look at how skewed the nose is on some of these things anymore. They look ridiculous, but I've always been a "form follows function" kind of guy anyway.

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              • Ltemodel
                Senior Member
                • Jun 2007
                • 307

                #22
                We did shift the body over six inches to the right several years ago and it did seem to help a little.
                One thing we did find which hurt us was cupping the right side door. Think about it this way, with a cupped door, air will push the car up on the right side top of the door.
                The fastest way to run your right side door is to slant it out from the top to the bottom.
                This will add downforce and traction.
                Shifting the body right will also have another plus. It puts a bigger gap between the front of the left rear tire and the back of the left rear tire. This will create a vacuum and pull air out from under the deck. The spoiler width is the limiting factor that makes this happen. Just don't angle the left rear quarter to create a parachute-like function under the car.
                Check out my book on Amazon.

                Dirt Racings Best Kept Secrets

                My Blog at http://www.hogantechnologies.com

                My YouTube Channel

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                • ZERO25
                  Senior Member
                  • Aug 2018
                  • 5240

                  #23
                  With the lr's up in the clouds these days, how much of the aero load is the rr getting?

                  What happened to the theory that 2 pairs of equally loaded tires made more traction?

                  Comment

                  • MasterSbilt_Racer
                    Senior Member
                    • May 2007
                    • 14324

                    #24
                    Originally posted by ZERO25 View Post
                    With the lr's up in the clouds these days, how much of the aero load is the rr getting?

                    What happened to the theory that 2 pairs of equally loaded tires made more traction?
                    The rr gets all the mechanical load. That watch spring rf don't take any.
                    Modern Day Spec Wedge Racing

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                    • ZERO25
                      Senior Member
                      • Aug 2018
                      • 5240

                      #25
                      Would it not be beneficial to get the rr up in the air, at least some?

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                      • Punisher88
                        Senior Member
                        • Nov 2014
                        • 495

                        #26
                        Originally posted by ZERO25 View Post
                        Would it not be beneficial to get the rr up in the air, at least some?
                        Down the straightaway, yes.

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                        • 95shaw
                          Senior Member
                          • Nov 2007
                          • 205

                          #27
                          Originally posted by ZERO25 View Post
                          With the lr's up in the clouds these days, how much of the aero load is the rr getting?

                          What happened to the theory that 2 pairs of equally loaded tires made more traction?
                          Everyone gets hung up on loading the tires equally.
                          Ideal situation is for the tires to produce the correct amount of traction at the correct point in the corner.

                          For arguments sake, Set your car up with a single crazy wheel on the front.
                          Using loading on the tires on your solid, staggered axle to vary traction, complete a lap around the track.
                          Use the current theory of making the LR nearly solid thru loading of the bars and heavy compression on the shock.

                          Just food for thought.

                          Comment

                          • MasterSbilt_Racer
                            Senior Member
                            • May 2007
                            • 14324

                            #28
                            Originally posted by 95shaw View Post
                            Everyone gets hung up on loading the tires equally.
                            Ideal situation is for the tires to produce the correct amount of traction at the correct point in the corner.

                            For arguments sake, Set your car up with a single crazy wheel on the front.
                            Using loading on the tires on your solid, staggered axle to vary traction, complete a lap around the track.
                            Use the current theory of making the LR nearly solid thru loading of the bars and heavy compression on the shock.

                            Just food for thought.
                            I'm not going to argue about over damping LR, but the suspension is less rigid now than at anytime since big hike setups started
                            Modern Day Spec Wedge Racing

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                            • 95shaw
                              Senior Member
                              • Nov 2007
                              • 205

                              #29
                              Not going to argue that either.

                              The premise is that with both tires equally loaded on a staggered, solid axle, the car will turn toward the smaller tire, in an arc described by the difference in circumference and the distance between them.

                              To travel in a straight line, one of the tires must slip. Most likely the least loaded tire.

                              Comment

                              • ZERO25
                                Senior Member
                                • Aug 2018
                                • 5240

                                #30
                                Originally posted by 95shaw View Post
                                Not going to argue that either.

                                The premise is that with both tires equally loaded on a staggered, solid axle, the car will turn toward the smaller tire, in an arc described by the difference in circumference and the distance between them.

                                To travel in a straight line, one of the tires must slip. Most likely the least loaded tire.

                                Thats not the concept. Its two pair of equally loaded tires (lefts vs rights) makes more traction.

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