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Hints on cutting up a roadgrader.

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  • Hints on cutting up a roadgrader.

    I recently had a fire in the forest where I live that destroyed my house and all of my vehicles and equipment that I had stored on my property. I have disposed of about 27 tons of scrapmetal so far, but I have one item left that is kicking my butt. I have an old Austin Western Pacer 300 roadgrader that burned in the fire. We were able to pull the blade, cab, and engine off of it using an excavator. I tried to cut through it with a cutting torch. Everywhere I cut the steel is at least one inch thick and is welded to form a box frame. Other spots it gets much thicker.

    Does anyone have experiences that might help out in this area? I have been working on it off and on for two days now. Even the guys doing the demolition work on my house cannot believe how tough this machine is.

  • #2
    That is a pretty big bummer. Sorry to hear about your loss.

    What setup are you using? I would think an o/a rig would cut it right on up.

    Comment


    • #3
      There should be no problem cutting up a road-grader with either an oxy-acetylene or an oxy-propane rig. Are you using the correct size tip?? For 1" steel, you should have at least a #1 or #2 (Victor tip size).
      *** Disclaimer ***

      As I have no wish to toy with anybody's life, I suggest you take this and all other posts with a certain amount of skepticism. Carefully evaluate, and if necessary, research on your own any suggestions or advice you might pick up here, especially those from my posts, as I obviously haven't the skill and experience exhibited by some of the more illustrious and more successful members of this forum. I'm not responsible for anything I say, as I drank toxic water when young.

      Comment


      • #4
        Hints on cutting up a roadgrader.

        I'm using an o/a rig right now. Do you have any hints on gauge setting. I've been setting the oxygen setting at 35 psi and the acetylene at 10 psi. I lost my welding books in the fire, but have looked online to check procedures. It has been a long time since I have cut any steel with a torch, and it shows.

        Comment


        • #5
          This may be close.
          Attached Files
          O/A
          DialArc 250p
          A-O Smith A3000
          Lincoln SP 135 w/gas
          And stuff I have lots of stuff.

          Comment


          • #6
            Fifelaker, that chart varies from a couple others I have. I wonder what torch/tip type it refers to.

            For a regular Victor #2 tip, I'd try 40-45 PSI on the Oxy and 5-6 PSI on the Acet. Hopefully your hoses are large and short enough not to have too much pressure drop.
            --- RJL ----------------------------------------------

            Ordinarily I'm insane, but I have lucid moments when I'm merely stupid.
            -------------------------

            Comment


            • #7
              This is what My latest copy of Victor booklet says about cutting....



              Dale
              Attached Files
              "Fear The Government That Wants To Take Your Guns" - Thomas Jefferson..

              Comment


              • #8
                I have no clue as to what tips it is for. I just pulled it off the net. All of my charts were at school.
                O/A
                DialArc 250p
                A-O Smith A3000
                Lincoln SP 135 w/gas
                And stuff I have lots of stuff.

                Comment


                • #9
                  The neck is liable to have an "I" bean inside the box!
                  I cut one up many, many years ago.
                  We used Oxy-Propane with a tip that would go through 6 inches of steel.
                  The first plate leads to scale between the I beam and it blows back all over you!
                  Just select one piece and patiently work on it.
                  An Acet tip sized for 1 inch will get the job done!

                  Comment


                  • #10
                    Get a set of tip cleaners.
                    http://www.facebook.com/cary.urka.urkafarms

                    Comment


                    • #11
                      Anything that beastly I'd try a 3 or 4 Victor tip, leaning towards a 4. Demolition ain't fab shop work.

                      If you still have or can get a BBQ LP jug you can run an LP tip and save on acetylene.

                      Sorry for you loss. I cut down most of the trees around my place and your post is a good reminder to dispose of more of them.

                      Comment


                      • #12
                        As a scrap burner for thirty plus years,this is and easy one to cut. Using that small of tip,you sure are a glutton for punishment. I use oxy /propane since its cheaper and I know the tip sizes and pressures off by heart. For oxy/propane........15 lbs of fuel and 125 lbs of oxy using a small #8 tip. NEVER cut with the tip at 90 degrees to the steel,always on a 45 degree to blow rust/dirt before the cut. Put a small weave on while cutting and you should have no problem. Using this method,should take you about and hour to cut the whole thing up for #1 prepared scrap (3 ft and under).Remember that you are cutting scrap and not fitting. As I was taught when I started........If you can see through the cut - its cut

                        Bill

                        Comment


                        • #13
                          While I have never been a "scrap burner", I have noticed most scrap guys use propane, and the serious ones use liquid oxygen tanks. Even once, watched a "scrap burner" using a gasoline torch. Cut fast, but not pretty. I would guess most scrap guys don't care about "pretty", just what is fast and efficient. I have also noticed over the years, most have 3 or 4 foot long torches.
                          *** Disclaimer ***

                          As I have no wish to toy with anybody's life, I suggest you take this and all other posts with a certain amount of skepticism. Carefully evaluate, and if necessary, research on your own any suggestions or advice you might pick up here, especially those from my posts, as I obviously haven't the skill and experience exhibited by some of the more illustrious and more successful members of this forum. I'm not responsible for anything I say, as I drank toxic water when young.

                          Comment

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