Roll Bar

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  • 619E30
    E30 Mastermind
    • Feb 2010
    • 1753

    #31
    I get what your sayin. But what diameter pvc would I need to be strong enough?
    Originally posted by audiquattrot
    bimmers b4 b*tches....remember that.
    1990 Alpinweiss 325i - secret 500whp build
    2000 Audi S4 B5 Laser Red
    1990 Nissan 240sx - Drift Missile
    2006 CBR600RR

    Comment

    • Danny
      Moderator
      • Feb 2008
      • 14217

      #32
      You'd probably be safe with 1/2" but I'd go 3/4" just to be safe.

      Comment

      • 619E30
        E30 Mastermind
        • Feb 2010
        • 1753

        #33
        What thickness?
        Originally posted by audiquattrot
        bimmers b4 b*tches....remember that.
        1990 Alpinweiss 325i - secret 500whp build
        2000 Audi S4 B5 Laser Red
        1990 Nissan 240sx - Drift Missile
        2006 CBR600RR

        Comment

        • Danny
          Moderator
          • Feb 2008
          • 14217

          #34
          Just talk to the guy at Ace Hardware/Home Depot/ Lowe's and let him know what you're building, he'll point you in the right direction.

          Comment

          • Stephen
            Шлем ишака
            • Aug 2008
            • 10774

            #35
            For the really crucial spots i put a smaller pipe inside a larger one, but that's your call. Also farm supply stores are a great place to go. Plenty of PVC welding experts too

            Comment

            • 619E30
              E30 Mastermind
              • Feb 2010
              • 1753

              #36
              Originally posted by Danny
              Just talk to the guy at Ace Hardware/Home Depot/ Lowe's and let him know what you're building, he'll point you in the right direction.
              Okay. Sounds good. Thanks for the help.

              Originally posted by Stephen
              For the really crucial spots i put a smaller pipe inside a larger one, but that's your call. Also farm supply stores are a great place to go. Plenty of PVC welding experts too
              I'll definately keep that in mind.


              But I'm kinda stuck on how to bend the pvc? Use angle connectors?
              Originally posted by audiquattrot
              bimmers b4 b*tches....remember that.
              1990 Alpinweiss 325i - secret 500whp build
              2000 Audi S4 B5 Laser Red
              1990 Nissan 240sx - Drift Missile
              2006 CBR600RR

              Comment

              • Jesse30
                No R3VLimiter
                • Jan 2007
                • 3936

                #37
                me and stephen used angle connectors SOLEY FOR MOCK UP, for final roll bar assembly. you need to heat the pvc piping up to 345* C to melt the plastic but avoid ruining the molecular structural integrity of the pvc. this is key. you need to get a laser temperature gauge to make sure you get it at the right time. otherwise you're back to square one.

                Comment

                • Stephen
                  Шлем ишака
                  • Aug 2008
                  • 10774

                  #38
                  ^ yep. Dont worry it sounds really finnicky and complex and what not but its a snap after the first few tries. Do some practice bends

                  Comment

                  • IminDiegoTriick
                    E30 Mastermind
                    • Oct 2009
                    • 1564

                    #39
                    i know its far but its well worth it. Fabrication is done at the highest level. Welding is top notch. This is one of the beasts worked on by them.



                    keith ta (revdupkustomz)'s profile on Myspace, the place where people come to connect, discover, and share.


                    Fast life fuck slow..Low life for life
                    Let the mix flow..Let the night flow
                    I'm so gone ✗ ♥ O

                    Comment

                    • Luis325
                      No R3VLimiter
                      • Jun 2009
                      • 3847

                      #40
                      Impresive......
                      sigpic
                      1986 "C2 2.7 Alpina" Sedan
                      1987 325ic Black Vert
                      1986 327i Red Track Car RIP 10/10/10
                      1989 325is Henna S50 track car SOLD


                      Transaction feedback here please!!
                      http://www.r3vlimited.com/board/showthread.php?t=170548

                      Comment

                      • 87-325ic
                        E30 Enthusiast
                        • Apr 2006
                        • 1198

                        #41
                        seriously guys.. ?? hilarious.

                        but doesnt the PVC squeak too much when you go around turns.. or does the welded pvc not do this? and OP, you should definitily use at LEast 1" OD if youre goingwith pvc, 25% stronger and olny 10% heavier than the3/4"

                        Comment

                        • Moberg12
                          Wrencher
                          • Dec 2007
                          • 209

                          #42

                          Comment

                          • Mr Two
                            E30 Addict
                            • Jul 2008
                            • 590

                            #43
                            This is the best thread.

                            Comment

                            • Syncro325is
                              E30 Addict
                              • Mar 2009
                              • 574

                              #44
                              Originally posted by 87-325ic
                              seriously guys.. ?? hilarious.

                              but doesnt the PVC squeak too much when you go around turns.. or does the welded pvc not do this? and OP, you should definitily use at LEast 1" OD if youre goingwith pvc, 25% stronger and olny 10% heavier than the3/4"
                              When I did mine, I used that spray foam to insulate and secure the pipes. No squeaks or anything, and its solid. Shit it impressed the hell out of those dumbass d-bags at the track. They all begged me to take out their heavy steal cages and replace them with the lightweight PVC cages. This is some cutting edge shit right here.
                              sigpic

                              Comment

                              • JGood
                                R3V OG
                                • Jan 2004
                                • 7959

                                #45
                                I like to use these connectors at the joints on the main hoop. That way, if you ever decide to go with a full cage, you can simply add on without taking apart the old roll bar.


                                85 325e m60b44 6 speed / 89 535i
                                e30 restoration and V8 swap
                                24 Hours of Lemons e30 build

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