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  • Propeller Repair

    Attached are some pictures of a prop I repaired for a friend.
    The boat was 50 HP and was built in 1968.
    Last fall the prop hit a log.
    Attached Files
    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport
    Miller Spectrum 375 Plasma Torch

  • #2
    And the last picture
    Attached Files
    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport
    Miller Spectrum 375 Plasma Torch

    Comment


    • #3
      Nice...Bob
      Bob Wright

      Spool Gun conversion. How To Do It. Below.
      http://www.millerwelds.com/resources...php?albumid=48

      Comment


      • #4
        It looks like you did a fine job on the repairs!

        How much time did you have in the project start to finish? Hopefully the boat owner will be more careful where he/she takes the boat this season.
        Blondie (Owner C & S Automotive)

        Colt the original point & click interface!

        Millermatic 35 with spot panel
        Miller 340A/BP
        Victor O/A torches
        Lincoln SP125
        Too many other tools to list

        03 Ram 1500
        78 GS1000
        82 GL1100 Interstate

        Comment


        • #5
          Originally posted by Blondie_486 View Post
          It looks like you did a fine job on the repairs!

          How much time did you have in the project start to finish? Hopefully the boat owner will be more careful where he/she takes the boat this season.
          It took me about 1-1/4 hours.
          It took a little longer because there was a crack in the middle of the blade from a previous repair.

          Don
          Miller Thunderbolt
          Smith Oxyacetylene Torch
          Miller Dynasty 200DX
          Lincoln SP-250 MIG Welder
          Clausing/Coldchester 15" Lathe
          16" DuAll Saw
          15" Drill Press
          7" x 9" Swivel Head Horizontal Band Saw
          20 Ton Arbor Press
          Bridgeport
          Miller Spectrum 375 Plasma Torch

          Comment


          • #6
            i wish you were around or i knew how to tig when i was seventeen. i ran my Dads mid fifties seventy horse johnson on a sand bar. to get loose i gunned it and ground away half the propeller. My dad didnt say a word. which is worse than getting yelled at. Took a year to find replacement prop.
            Joe
            wrench3047@gmail.com

            Comment


            • #7
              Looks like you saved the day with this repair. The boat owner would probably have a hard time finding a replacement prop for an outboard that old in the size and pitch needed. Not to mention what the price would be IF a replacement could be found. Any idea how it turned out as far as balance goes? If it vibrates too much at operating speeds it could chew up the seals on the shaft causing water to enter the gearbox and trashing the lower unit if not checked. If it has some vibration after this, it can be taken to a prop shop for final balancing, look in the yellow pages for a shop to do this if needed. They can also replace the rubber bushing in the hub if it starts slipping. The impact with the log that cause this damage could have loosened the bushing enough to the point where it could start trying to spin in the hub during acceleration. If the motor revs up more than normal before the boat reaches speed, then that is what's going on. It may take several outings before this happens, but it is probably going to happen eventually with this old of a prop. There are specialty shops out there that do prop repairs as well as modifications that do this kind of work. Some dealership repair departments may also be able to do this, too. So if it starts to slip in the hub, get the bushing replaced before it spins off completely and sends the repaired prop to the bottom of the lake, never to be seen again. Seen that happen before, then you need a tow back in if a replacement is not onboard the boat. Weekends last longer when you carry a spare propeller.

              Comment


              • #8
                Originally posted by aametalmaster View Post
                Nice...Bob
                Bob,

                My friend Jim, the boat owner, is a decent TIG welder. To prepare him for the prop repair, I sent him a link to your latest prop welding repair posting.

                http://www.millerwelds.com/resources...at-prop-repair

                I also sent him a link to Welding Tips & Tricks prop welding repair.

                http://www.weldingtipsandtricks.com/...ropellers.html

                After work Jim brought the prop to our TIG welder and discovered that the Argon bottle was empty because it had been left open for some time and the spare was also empty because whoever last switched tanks didn't bother to move it to the empty cylinder corral. I just told him to give it to me . I welded it that evening and brought it in the next day.
                Miller Thunderbolt
                Smith Oxyacetylene Torch
                Miller Dynasty 200DX
                Lincoln SP-250 MIG Welder
                Clausing/Coldchester 15" Lathe
                16" DuAll Saw
                15" Drill Press
                7" x 9" Swivel Head Horizontal Band Saw
                20 Ton Arbor Press
                Bridgeport
                Miller Spectrum 375 Plasma Torch

                Comment


                • #9
                  Originally posted by Bistineau View Post
                  You (should) carry a spare propeller.
                  Fortunately Jim does have a spare prop. I didn't realize that it would be difficult to find one for such an old boat. I will remind him that he might want to keep it on the boat for emergencies.

                  I will review the technical information of your post with Jim.

                  Thanks for taking the time to post. I really enjoy everything that I have learned from this forum.

                  Don
                  Miller Thunderbolt
                  Smith Oxyacetylene Torch
                  Miller Dynasty 200DX
                  Lincoln SP-250 MIG Welder
                  Clausing/Coldchester 15" Lathe
                  16" DuAll Saw
                  15" Drill Press
                  7" x 9" Swivel Head Horizontal Band Saw
                  20 Ton Arbor Press
                  Bridgeport
                  Miller Spectrum 375 Plasma Torch

                  Comment


                  • #10
                    Well it looks great, I couldn't have done it better myself. I'll bet your friend is happy you saved them a bunch of money fixing it vs replacing it.
                    Blondie (Owner C & S Automotive)

                    Colt the original point & click interface!

                    Millermatic 35 with spot panel
                    Miller 340A/BP
                    Victor O/A torches
                    Lincoln SP125
                    Too many other tools to list

                    03 Ram 1500
                    78 GS1000
                    82 GL1100 Interstate

                    Comment


                    • #11
                      Originally posted by Don52 View Post
                      Fortunately Jim does have a spare prop. I didn't realize that it would be difficult to find one for such an old boat. I will remind him that he might want to keep it on the boat for emergencies.

                      I will review the technical information of your post with Jim.

                      Thanks for taking the time to post. I really enjoy everything that I have learned from this forum.

                      Don
                      Has he tryed it yet on the boat at full throttle, to check for vibrations/balance? If not, encourage him to try it. That way if it is off a little he can get it to a prop shop to get it balanced so it is ready for use.Some people just want to say"it'll be all right", but when it's needed, then they find out it is trying to shake the motor apart. Have him put it on and run it in the water, not just on the trailer, makes a big difference.

                      Comment


                      • #12
                        I sent him a link to this thread and asked him to pay particular attention to post #7 & 11. Thanks again for everyone that took the time to post.
                        Miller Thunderbolt
                        Smith Oxyacetylene Torch
                        Miller Dynasty 200DX
                        Lincoln SP-250 MIG Welder
                        Clausing/Coldchester 15" Lathe
                        16" DuAll Saw
                        15" Drill Press
                        7" x 9" Swivel Head Horizontal Band Saw
                        20 Ton Arbor Press
                        Bridgeport
                        Miller Spectrum 375 Plasma Torch

                        Comment


                        • #13
                          Re: Propeller Repair

                          You have done really a great job. I have gone through these images. Nice man. How long did it take to repair the propeller?

                          Comment


                          • #14
                            Originally posted by felipe View Post
                            You have done really a great job. I have gone through these images. Nice man. How long did it take to repair the propeller?
                            I did it in an evening.
                            Miller Thunderbolt
                            Smith Oxyacetylene Torch
                            Miller Dynasty 200DX
                            Lincoln SP-250 MIG Welder
                            Clausing/Coldchester 15" Lathe
                            16" DuAll Saw
                            15" Drill Press
                            7" x 9" Swivel Head Horizontal Band Saw
                            20 Ton Arbor Press
                            Bridgeport
                            Miller Spectrum 375 Plasma Torch

                            Comment

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