Roll cage roll call!

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  • IronFreak
    No R3VLimiter
    • Dec 2012
    • 3702

    #1

    Roll cage roll call!

    Ok boys.....and girls....the time has come and I will be starting the cage on the car soon. I'm building my own bender and need to order the die and wanted to know what you guys that have either built or had them built were using.

    Need to decide between a 4.5" or 6" die....

    ....and whether I want to use 1-1/2" .120 wall or 1-3/4" .95 wall D.O.M. Weight between the to are minimal so maybe provide insight on which might be preferable and why. I'm thinking 1-1/2" as it's smaller.

    If you have any cool cage photos I'd take those too, I'm a visual guy and am always looking for ideas!

    Bender (Air/Hydraulic goodness)


    Test subject
    Last edited by IronFreak; 06-24-2013, 10:50 AM.
    sigpic

    Rebellion Forge Custom Fabrication

    1988 325is - TrackRat in progress

    Instagram @rebellionforge
  • iansane
    E30 Fanatic
    • Oct 2011
    • 1341

    #2
    Are you building the cage for a particular series or class?
    84 325e - 91 325i - 92 318 touring - 91 Trans Am - 01 S4 avant - 03 S-type R - 96 F350 - 15 SS - 84 Biturbo - 91 Defender

    Comment

    • IronFreak
      No R3VLimiter
      • Dec 2012
      • 3702

      #3
      I want to do a full cage that meets scca specs and allow tandem drifting. Not a spec car or anything.
      sigpic

      Rebellion Forge Custom Fabrication

      1988 325is - TrackRat in progress

      Instagram @rebellionforge

      Comment

      • Jb325is
        R3VLimited
        • Oct 2003
        • 2137

        #4
        Space is not an issue in an e30, go with the 1 3/4".. 1 1/2" will look like toothpicks in there. I just had my back half done with 1 3/4" and I'm happy with it
        - '88 m54 coupe

        <3

        Comment

        • cmcgrogan
          Wrencher
          • May 2013
          • 240

          #5
          berlow94 just got a cage put in while at levent's. dont remember who made it though
          Originally Posted by scaraveos
          Are saying about welding the head to the block? and if yes how is it seperated if required?

          (possibly a stupid post)

          Comment

          • Jb325is
            R3VLimited
            • Oct 2003
            • 2137

            #6
            Here's mine so far

            - '88 m54 coupe

            <3

            Comment

            • 10Toes
              Me Father Was A Tree
              • Jan 2008
              • 61222

              #7
              Originally posted by Jb325is
              Space is not an issue in an e30, go with the 1 3/4".. 1 1/2" will look like toothpicks in there. I just had my back half done with 1 3/4" and I'm happy with it
              I disagree, I have been in cars with both and think the 1.75 looks big and blocks more of the A pillar in an E30. This is why I am going to use 1.5 even though 1.75 is stronger in some ways and a little lighter (about 10lbs+- for a whole car).


              1.5X.120 DOM is also a little cheaper then 1.75X.095
              Last edited by 10Toes; 06-20-2013, 04:03 PM.

              Comment

              • Solarian
                Advanced Member
                • Oct 2012
                • 120

                #8
                When you're building a cage you should just look at the spec required for whatever race type you want to enter, or just pick a random one if it's not for competitive use. They all have quite a large safety factor built in, so it doesn't make sense to up size on the tubing just because you think it looks too skinny or something. It's for structural reasons, not aesthetics, and it doesn't make sense to add unnecessary weight to the car.

                Comment

                • obrian
                  Wrencher
                  • Sep 2011
                  • 232

                  #9
                  You don't need to stick with one tube size. Lots of sactioning bodies only require 1.75 on the main hoop, etc. you can go back to 1.25 for the diaganals and windshield bar etc. get the smaller radius die. And a good notcher. Good joints are the key.

                  Comment

                  • Eric
                    R3V Elite
                    • Feb 2004
                    • 5138

                    #10
                    Originally posted by IronFreak
                    tandem drifting.










                    Coolest E30 cage build I've seen in a while: http://www.s14.net/forums/showthread...ighlight=build
                    My E30 v1.0 | v2.0 | v3.0 | My E28 |My E34 | My feedback

                    Comment

                    • Jb325is
                      R3VLimited
                      • Oct 2003
                      • 2137

                      #11
                      Originally posted by Solarian
                      When you're building a cage you should just look at the spec required for whatever race type you want to enter, or just pick a random one if it's not for competitive use. They all have quite a large safety factor built in, so it doesn't make sense to up size on the tubing just because you think it looks too skinny or something. It's for structural reasons, not aesthetics, and it doesn't make sense to add unnecessary weight to the car.
                      1 3/4" is lighter and just as strong as 1 1/2," and in my opinion, when all else is equal aesthetics definitely matter, although it all comes down to opinion. I work on Miata race cars all day long, where 1 1/2" tubing is a must and space is still tight, the e30 is like a Cadillac in comparison. It's all relative I suppose.
                      - '88 m54 coupe

                      <3

                      Comment

                      • dmoney(AB)
                        E30 Fanatic
                        • Feb 2005
                        • 1372

                        #12
                        :( wish I could cage my beast.

                        I'm jelly



                        mtech1/2jzgte/r154/275tire
                        function>form

                        Comment

                        • e30vert
                          E30 Mastermind
                          • Jan 2005
                          • 1789

                          #13
                          JD Squared Notchmaster

                          US manufacturer of CNC rotary cutters and tables, benders, and notchers. Family-owned, made in the USA, serving metalworking pros since 1982.


                          Coupled with the Swag Offroad

                          Notchmaster Reach Around if you want ultimate versatility in your notches.

                          Many of the products offered at Swag Off Road are an industry first. Every product is designed, developed, prototyped and tested here in Oregon & 100% proudly made in the USA. We specialize in off road products as well as unique & innovative fabrication tools. “DOING ORDINARY EXTRAORDINARY”

                          Comment

                          • e304me
                            E30 Fanatic
                            • Feb 2006
                            • 1374

                            #14
                            Originally posted by obrian
                            You don't need to stick with one tube size. Lots of sactioning bodies only require 1.75 on the main hoop, etc. you can go back to 1.25 for the diaganals and windshield bar etc. get the smaller radius die. And a good notcher. Good joints are the key.
                            the cage looks great but I always wondered how strong the rear shock towers are....if the shock mounts rip out how can they be expected to support the car in a rollover. I understand they have a plate welded to them to reinforce them but that still awfully thin sheet metal.

                            Comment

                            • obrian
                              Wrencher
                              • Sep 2011
                              • 232

                              #15
                              My shock towers are stitch welded in, cage is attached to the towers, floor, and rear bulk head. Don't think it's going anywhere. But most modern non drag cages are attached to the towers in most cars anyways, and it doesn't seem to be a problem. Lots of guys do use the spot right on top of the spring mount also.

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