First Nitrous pass, and need rollcage/rollbar

Mopar Racers Forum

  1. gradedcatfood

    gradedcatfood 1972 Plymouth Duster 440

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    Hey everyone,

    Last night for my birthday I went to the local 1/8 mile drag way and ran a 7.1 with a 100 shot of nitrous. That was with me off the button for the last 100 ft as without a rollbar I'm supposed to keep it over 7.25 which I was trying to do! The car just responded much better to the shot then expected

    Wanted to show off the video and ask you guys to post photos of your rollbar/rollcage and what ET is is certified for as i'm looking to put one in the car now.

    (Duster in the left lane)


    Thanks!
     
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    • rumblefish360

      rumblefish360 so close yet so far away

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      Congrats and happy birthday.
       
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      • oldkimmer

        oldkimmer FABO Gold Member FABO Gold Member

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        Happy birthday. Nice pass. I went to a 12 point cage as I believe in safety first. My car is in storage so I can’t help with pics. Kim
         
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        • moper

          moper FABO Gold Member FABO Gold Member

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          I think (it's been a little while) that you only need a roll bar (read that as 6pt "cage") and they'll inspect the weld visually. You should not need a "certification", which is a separate inspection and gets rather involved.
           
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          • Cope

            Cope Fusing with fire

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            Mine is also a 12 point, 8.50 cage.
            (No cert)

            What pics do you want?
             
          • Cope

            Cope Fusing with fire

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            Heres a few I've done. I've got more pics but I'll let someone else have some fun.

            20190201_173856_zps77h7y0s7.jpg

            20190201_173906_zpsivid97na.jpg


            20190130_155019_zpsbcbp3knz.jpg

            20190317_180838_zpsdxophdtm.jpg
             
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            • Garrett Ellison

              Garrett Ellison Amateur driver on public roadway, do not imitate..

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              Happy Birthday, Indeed! Daing Cope! What are you doing there? I would show that off every opportunity it came up if I could, too, that's what I call a straight up doomsday device build.... Love the metalwork porn, everytime I see it, it's like seeing it for the first time all over again, always something new in it I didn't notice before.
               
              Last edited: Apr 5, 2019
            • Garrett Ellison

              Garrett Ellison Amateur driver on public roadway, do not imitate..

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              Oh, and the OP's car is awesome, too, I could watch that run on loopback all day and never tire of it!
               
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              • 383Scampman

                383Scampman Well-Known Member

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                nice pass . O.K., If you plan on going 10.49 or better you need a 12 point cage , aftermarket belts and the seat back must be bolted to the cross bar of the cage . 10.50 to 11.49 , you need a 6 point roll bar (not cage) and aftermarket belts . 11.50- whatever , no bar or cage unless it's a convertible and factory belts are o.k. Of course a puke tank , helmet , driveshaft loop and master disconnect if battery is in trunk , working headlight and taillight are mandatory .
                 
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                • circlepilot

                  circlepilot FABO Gold Member FABO Gold Member

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                  Man! That sounded good!
                   
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                  • stroked340

                    stroked340 Well-Known Member

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                    Here's my 6-point and it's good to 10.00..

                    20150920_164850.jpg

                    20150920_164738.jpg
                     
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                    • crackedback

                      crackedback FABO Gold Member FABO Gold Member

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                      You need a 5 point minimum for a roll bar.

                      The et is good the mph is a bit soft. In fact the MPH doesn't get you under the 11.49 cutoff... 7.35 and faster needs a rollbar.

                      I have and SW race cars MS Roll bar kit for a Duster/Demon I'm not likely to use. If interested, let me know. It's an 8 point IIRC
                       
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                      • Garrett Ellison

                        Garrett Ellison Amateur driver on public roadway, do not imitate..

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                        How big of a nitrous shot are you feeding it? It launches amazingly well, what's the 60 foot time?
                         
                      • Garrett Ellison

                        Garrett Ellison Amateur driver on public roadway, do not imitate..

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                        I bet it would have ETd close to 7 flat if you hadn't let off the nitrous at the last 100 feet, can't wait to see what it will do on a full run!
                         
                      • crackedback

                        crackedback FABO Gold Member FABO Gold Member

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                        I didn't see the last 100 feet off the button. Yeah it's a 6 second pass car all the way out the back. That's why it was down about 4-5 MPH.
                         
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                        • RustyRatRod

                          RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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                          • famous bob

                            famous bob mopar misfit

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                            RRR , u sure lost me on that one !^^^^^^^^^^^^^^^
                             
                          • gradedcatfood

                            gradedcatfood 1972 Plymouth Duster 440

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                            It's about an 80-90 shot. 1.582 60 ft

                            I think the nitrous really woke up my big cam and it prob gained more than advertised
                             
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                            • gradedcatfood

                              gradedcatfood 1972 Plymouth Duster 440

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                            • j par

                              j par Well-hung Member

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                              And a lot of RTV for when his thermostat blows out! And of course he had someone do it for him... (His cage and RTV LOL)
                               
                              Last edited: Apr 6, 2019
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                              • gradedcatfood

                                gradedcatfood 1972 Plymouth Duster 440

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                                You're probably right, the car was on such a pass I was sort of guessing when letting off the button as I felt like I was hanging on for life lol It could of been closer to the last 50ft or so, not sure
                                 
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                                • j par

                                  j par Well-hung Member

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                                  I welded that competition engineering one in my duster and the loop was the important part and it fit perfect. It needed no trimming whatsoever. Actually my fish plates are still under the carpet LOL. I cut it out about a year-and-a-half ago and am putting my car into more street use and less drag use, but don't count me out for a pass or two...
                                   
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                                  • Cope

                                    Cope Fusing with fire

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                                    My car is a dart but none of the pre bent kits fit good. I end up bending, cutting and notching them all.

                                    They are just a starting point.
                                     
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                                    • Walker434

                                      Walker434 Well-Known Member

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                                      Here are some pics of my roll bar in the 71 Dart. Good to 10.00 in the 1/4.

                                      Dart 14.jpg

                                      Dart Interior 2.jpg

                                      Dart Interior.jpg

                                      Dart Interior 1.jpg
                                       
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                                      • j par

                                        j par Well-hung Member

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