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I need information ref TIG welding a Husky chainsaw

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  • I need information ref TIG welding a Husky chainsaw

    I have a Husky 2100 chainsaw, and when I was in the middle of falling a big fir tree the drive pawl for the clutch broke an arm and before I could get the saw stopped, it had eaten through the chain cover.
    I know it can be welded because a friend of mine does it regularly. Unfortunately, he has gone on holiday for six weeks and I have no way to find out what rod he uses.
    The reason I am concerned, is that I believe the piece could have magnesium in it and want to be certain to get the proper TIG rod. Does anyone know what rod I should use for this job? I have another saw that I can use, but the saw with its 5 ft bar is an overkill for this job.
    Yes, a replacement clutch cover would be the answer, but this is an older saw and this is one of the parts that failed most often. They are not available, and repair is my only option.
    Bob
    Things that are of no use to a pilot, runway behind you, altitude above you, and gas in the pump.http://www.hobartwelders.com/mboard/...lies/smile.gif

  • #2
    Most chainsaws are Magnesium alloy castings. It needs to be very clean and you must hold a very tight arc when welding. Weld it with Magnesium filler wire and use Aluminum settings and process.

    It's cake, really.
    Two turn tables and a microphone.

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    • #3
      welding the chainsaw

      Do you know the number of the rod I need to use? I phoned one of the local suppliers and he didn't have a clue.
      Bob
      Things that are of no use to a pilot, runway behind you, altitude above you, and gas in the pump.http://www.hobartwelders.com/mboard/...lies/smile.gif

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      • #4
        You should be certain of the material before you buy the rod. you can put some vinegar on it and if it bubbles, its mag. If it doesnt, its alum.

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        • #5
          Originally posted by jjock View Post
          . They are not available, and repair is my only option.
          Bob
          2100 is a sweet saw. Is yours a thin ring?
          There is a clutch cover on Ebay right now
          http://cgi.ebay.com/HUSQVARNA-2100-A...QQcmdZViewItem

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          • #6
            Can you just POP rivet a piece over the hole as a stop gap measure for now?
            "Weld It And You Won't Be Screwed"
            Rescued from the boneyard SA-250 on a fully equipt trailer (My Wife's Explorer cries every time I hitch up)
            Trailblazer 301G (can't touch the SA-200 for stick)
            Arcair K-4000 A.K.A "The Hissing Cobra"
            HF- 251 TIG box for the TB with a Weldcrap torch, Yes I weld aluminum
            More than a toolbox full of stuff on an F-350 that is way to small

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            • #7
              Husky clutch cover

              Originally posted by gatkeper1 View Post
              2100 is a sweet saw. Is yours a thin ring?
              There is a clutch cover on Ebay right now
              http://cgi.ebay.com/HUSQVARNA-2100-A...QQcmdZViewItem
              Thanks for the link. This is repairable, so I don't think I'll buy that one, but he has a lot of interesting stuff. I really would like to do the repair for the practice. I haven't had the saw apart in the 25 years I have been using it, so I can't tell you which ring set it has. It just runs extremely well.
              Bob
              Things that are of no use to a pilot, runway behind you, altitude above you, and gas in the pump.http://www.hobartwelders.com/mboard/...lies/smile.gif

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              • #8
                welding the clutch cover

                I did the test and it bubbled. I was also lucky enough to find a clutch cover from a 4-80 which fits. I can work for now and will repair it when my buddy gets back. I have welded aluminum, but I would prefer to have some supervision for my first attempt at welding magnesium.
                Thanks for all the help, the trees are down, now I have to dig out the stumps.
                Bob
                Things that are of no use to a pilot, runway behind you, altitude above you, and gas in the pump.http://www.hobartwelders.com/mboard/...lies/smile.gif

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                • #9
                  Crown Alloys offers 2 Magnesium Tig alloys
                  R AZ61A for welding wrought mag alloys and R AZ92A for cast mag alloys, which is I believe, what you would use for the clutch cover.
                  Glad to see you got the old girl back to work so quickly.

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                  • #10
                    Bob, from one BC saw guy to another BC saw guy, it might be worth it to give walker saws a call and see if they have a used one they could send you out for cheap. I trust you know the name if you're in the industry. If not, I can dig up a phone # for you.
                    Proud owner of Bushwacker Mobile Welding
                    Pictures

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                    • #11
                      TIG a Husky chainsaw

                      I didn't think of them, I'll give them a call. Now that I have it working again, I will wait until my buddy gets back. I would really like to practice TIG welding on this piece, and this is the perfect excuse. Like myself, he is still using a pair of them on an Alaska mill and he is in the business.
                      Thanks,
                      Bob
                      Things that are of no use to a pilot, runway behind you, altitude above you, and gas in the pump.http://www.hobartwelders.com/mboard/...lies/smile.gif

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                      • #12
                        You bet, I understand the wanting to fix it, I'm the same way. If you find yourself in a bind, call walker as they have treated me well. Alaskan Mill, can't go buy 4" thick slabs at the lumber store, got to mill your own sometimes
                        Proud owner of Bushwacker Mobile Welding
                        Pictures

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                        • #13
                          Yep, they're beautiful. I went the next step and bought a Norwood bandsaw because I had a lot of wood to do, but for portability there is nothing like a chainsaw mill.
                          Bob
                          Things that are of no use to a pilot, runway behind you, altitude above you, and gas in the pump.http://www.hobartwelders.com/mboard/...lies/smile.gif

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                          • #14
                            The band mill would be a nice step up for sure. I've looked at the woodmizers, but they haven't sold me yet. Doing a structure with the chainsaw mill takes lots of work and sweat, but it does a decent job. I'd really like to build a double blade circular mill one of these days, nothing fancy, just an old style cable/drum carriage setup with a 24' carriage. I keep telling myself next year I'll have more time and I'll do it.
                            Proud owner of Bushwacker Mobile Welding
                            Pictures

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