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'55 Aerocraft CC Resto

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  • #16
    Re: '55 Aerocraft CC Resto

    Click image for larger version

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ID:	7027046Here are a couple pic
    s now that the abomination of a windshield is off. Today I pulled up all the flooring and the side panes (PO used treated ply) and found small areas of severe corrosion. The aluminum was flaking away, but it appears that its still strong as a swift kick with my boot resulted in no movement at all. I also removed the seats and found that there is foam in the benches. Its sealed in, but I poked around with a wire coat hanger and it sounds nice and squeaky so I'm guessing its not water logged. Its amazing how fast one can strip a simple tin boat! I also looked at the place where the old transom was supposed to be, and although there is nothing there at the moment, it looks as if all it was was a 2x6 about 31" long. Perhaps thats why its only rated for 50 HP compared with similar sized boats in the 60's that were 75+.

    Quick question on wood for flooring. Is 1/2" ply the way to go or 3/4"? I am thinking of putting a spacer in the middle to allow for a straight floor instead of a bowed down one so flexibility is not all that needed.
    1974 Starcraft 24' Chieftan IV Express Hard top, 1984 Merc 898
    1972 Starcraft 18' Mariner, 1985 Evinrude 140HP
    >>>
    1969 MirroCraft 18.5' Center Console<<< AVOID https://forums.iboats.com/boat-restor...to-591439.html
    1965 Starcraft Jet, 1996 40 HP Force by Mercury- SOLD
    1955 Aerocraft CC-16 barrel back runabout, '67 Mercury 500
    SOLD

    Comment


    • #17
      Re: '55 Aerocraft CC Resto

      now it REALLY looks like a WWII aircraft.....i'm having visions of the Flying Tiger paint scheme

      Comment


      • #18
        Re: '55 Aerocraft CC Resto

        Originally posted by 1973Chieftain View Post
        ................Quick question on wood for flooring. Is 1/2" ply the way to go or 3/4"? I am thinking of putting a spacer in the middle to allow for a straight floor instead of a bowed down one so flexibility is not all that needed.

        I would think if you can get supports on 18" or less 1/2" would work fine. I have heard of a few people using 5/8'. Don't know if your gravitationally challenged or not, but if yes than use 3/4".

        Glad she is coming apart quickly. Hope you get the corrosion issue sealed up, sounds like they used some thick sheet material back then.

        Squeaky Foam - Wasn't that one of the Manson followers? ..... Oh never mind.


        1973 Starcraft 21 Mariner ---------------- 1966 Lone Star Medallion II --------------- 1963 14' Lone Star Big Fisherman

        A Smart Phone is one that is Not in your hand when driving!

        Comment


        • #19
          Re: '55 Aerocraft CC Resto

          There are a few ways to stabilize that corrosion. One method is to get all of the corrosion removed and then alodine or acid etch, then a good 2 part epoxy paint.
          Corrosion is much harder (physically) that the base metal and is created by water and minerals, so acid etch is simply a "controlled corrosion" with the creator of the corrosion removed, leaving a hard shell like "corrosion" covering over the base metal, that won't continue without more Alodine or acid. The paint is to keep as much moisture out as possible.
          1987 Boston Whaler 18.6 Outrage with Merc 150 and Honda 8.

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          • #20
            Re: '55 Aerocraft CC Resto

            Originally posted by barato2 View Post
            now it REALLY looks like a WWII aircraft.....i'm having visions of the Flying Tiger paint scheme
            A tiger's open mouth on the front was what I was first thinking of too! A gloss balcony with teeth or polished aluminum? Hum, difficult choice!

            Gus, would the corrosion continue even after the treated wood is removed?
            1974 Starcraft 24' Chieftan IV Express Hard top, 1984 Merc 898
            1972 Starcraft 18' Mariner, 1985 Evinrude 140HP
            >>>
            1969 MirroCraft 18.5' Center Console<<< AVOID https://forums.iboats.com/boat-restor...to-591439.html
            1965 Starcraft Jet, 1996 40 HP Force by Mercury- SOLD
            1955 Aerocraft CC-16 barrel back runabout, '67 Mercury 500
            SOLD

            Comment


            • #21
              Re: '55 Aerocraft CC Resto

              in theory, to the extent it's due to galvanic corrosion, it should stop once you get all the copper out of contact with the aluminum. if it were my boat, i'd give all copper-compound contact areas a quick shot of the glass bead blaster to be sure.

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              • #22
                Re: '55 Aerocraft CC Resto

                Originally posted by 1973Chieftain View Post
                A tiger's open mouth on the front was what I was first thinking of too! A gloss balcony with teeth or polished aluminum? Hum, difficult choice!

                Gus, would the corrosion continue even after the treated wood is removed?
                Hey chief,

                Great looking boat you've got there! It would be great to see some pics of the insides and the corroded spots. My understanding is that corrosion will continue unless something is done to stop it --- alum "Swiss cheeses" at a microscopic level. I'll let others who know best weigh in on the particulars of an acid etch as you just want to make sure you get the right dilution so as to not 'eat' the alum.

                My vote for the floor would be to go the thicker wood ... less flex when walking-standing etc just feels more solid. I just took out 1/2" flooring and it had some flex to it with 18" centers. Just some thoughts for you to chew on.

                I'm looking forward to seeing your rebuild!!! Keep the pictures coming when you can!!
                IM
                1968 Starcraft Jupiter
                COMPLETED! rebuild thread - https://forums.iboats.com/showthread.php?t=524687

                1969 Falcon Rebuild
                COMPLETED rebuild thread - https://forums.iboats.com/showthread.php?t=541533

                1964 Jet Rebuild
                COMPLETED! and Sold rebuild thread - https://forums.iboats.com/showthread...=582064&page=2

                Comment


                • #23
                  Re: '55 Aerocraft CC Resto

                  http://kalamazoo.craigslist.org/boa/2820534007.html

                  Something like this would look great on the barrelback.

                  But this has controls

                  http://nmi.craigslist.org/boa/2797985111.html


                  1973 Starcraft 21 Mariner ---------------- 1966 Lone Star Medallion II --------------- 1963 14' Lone Star Big Fisherman

                  A Smart Phone is one that is Not in your hand when driving!

                  Comment


                  • #24
                    Re: '55 Aerocraft CC Resto

                    My home internet is on the fritz, and my phone does not like uploading pics here, so photobucket it is. http://m270.photobucket.com/albumlist/claycrusher1900

                    I uploaded three pictures of the corrosion. By far the worst is on the right rear side panel bracket where it meets the seat, almost 6" are completely gone. The other areas are all on the stringers. The stringers are shaped like an upside down T, the odd thing is all of the corrosion is on the outside leg of the T, no where else. All of it appears old due to the dirt that is mixed into the cracks so I don't know if it has anything to do with the treated wood or is from something else entirely. I was thinking of taking a steel brush and cleaning it up as much as possible then coating the area with my left over West system epoxy that I coated the transom with. I was thinking this should strengthen the area if it needs it, and prevent air from getting in hopefully stopping any further corrosion. Would this work do you think?
                    1974 Starcraft 24' Chieftan IV Express Hard top, 1984 Merc 898
                    1972 Starcraft 18' Mariner, 1985 Evinrude 140HP
                    >>>
                    1969 MirroCraft 18.5' Center Console<<< AVOID https://forums.iboats.com/boat-restor...to-591439.html
                    1965 Starcraft Jet, 1996 40 HP Force by Mercury- SOLD
                    1955 Aerocraft CC-16 barrel back runabout, '67 Mercury 500
                    SOLD

                    Comment


                    • #25
                      Re: '55 Aerocraft CC Resto

                      Hey Chief... That is some corrosion there... but to be honest, I am having trouble orientating my self. My help all with some other shots of the area to get an idea of where the corrosion is. The areas look like they are truly being eaten away.

                      IM
                      1968 Starcraft Jupiter
                      COMPLETED! rebuild thread - https://forums.iboats.com/showthread.php?t=524687

                      1969 Falcon Rebuild
                      COMPLETED rebuild thread - https://forums.iboats.com/showthread.php?t=541533

                      1964 Jet Rebuild
                      COMPLETED! and Sold rebuild thread - https://forums.iboats.com/showthread...=582064&page=2

                      Comment


                      • #26
                        Re: '55 Aerocraft CC Resto

                        Originally posted by 1973Chieftain View Post
                        I was thinking of taking a steel brush and cleaning it up as much as possible then coating the area with my left over West system epoxy that I coated the transom with. I was thinking this should strengthen the area if it needs it, and prevent air from getting in hopefully stopping any further corrosion. Would this work do you think?
                        Get a stainless steel wire wheel for your drill and hit it with that. Use a stainless steel brush for those hard to reach places.
                        I don't think west system epoxy will stick but I have never tried it. I use JB Weld and it seems to stick. There are other products that some are using that stick also. Still for an old boat that thing is in great shape.
                        GLG
                        2005 19' Duckworth 115 Yamaha
                        1975 18' Starchief Volvo 130HP
                        sigpic
                        VP of Client Liason Field Operations

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                        • #27
                          Re: '55 Aerocraft CC Resto

                          http://jxn.craigslist.org/boa/2843987585.html

                          Possible windshield?


                          1973 Starcraft 21 Mariner ---------------- 1966 Lone Star Medallion II --------------- 1963 14' Lone Star Big Fisherman

                          A Smart Phone is one that is Not in your hand when driving!

                          Comment


                          • #28
                            Re: '55 Aerocraft CC Resto

                            Originally posted by InMotion View Post
                            Hey Chief... That is some corrosion there... but to be honest, I am having trouble orientating my self. My help all with some other shots of the area to get an idea of where the corrosion is. The areas look like they are truly being eaten away.

                            IM
                            IM I will try to get some more pics added tomorrow that are more general shots, but I will also try to describe it. The major area that is eaten away is on the bracket that holds the right side panel, sitting on top of the rear bench seat. Essentially where the wood of the seat would come in contact with the side decorative panels. This bracket has absolutley no structural importance and could easily be removed. The other areas are on the 2 parallel stringers, one between the rear bench and the stern, the other in between the benches. The stringers look more like an outer layer is pealing off one side instead of being corroded all the way through. I would call it delaminating if it were some other material then AL, that's what it reminds me of. About 4' on each of the stringers is corroded, but only a couple inches of the bracket. I hope this is somewhat less confusing, but I'll get some more pics up asap.
                            1974 Starcraft 24' Chieftan IV Express Hard top, 1984 Merc 898
                            1972 Starcraft 18' Mariner, 1985 Evinrude 140HP
                            >>>
                            1969 MirroCraft 18.5' Center Console<<< AVOID https://forums.iboats.com/boat-restor...to-591439.html
                            1965 Starcraft Jet, 1996 40 HP Force by Mercury- SOLD
                            1955 Aerocraft CC-16 barrel back runabout, '67 Mercury 500
                            SOLD

                            Comment


                            • #29
                              Re: '55 Aerocraft CC Resto

                              I took some additional pics and uploaded them to photobucket here http://m270.photobucket.com/albumlist/claycrusher1900

                              The PO used the bracket to hold a full sized side panel, but when I was looking at it today it struck me that it might be a bracket for a full length seat with a back. Any ideas on what products I could use to stop or isolate the corrosion? Has anyone tried epoxy?
                              1974 Starcraft 24' Chieftan IV Express Hard top, 1984 Merc 898
                              1972 Starcraft 18' Mariner, 1985 Evinrude 140HP
                              >>>
                              1969 MirroCraft 18.5' Center Console<<< AVOID https://forums.iboats.com/boat-restor...to-591439.html
                              1965 Starcraft Jet, 1996 40 HP Force by Mercury- SOLD
                              1955 Aerocraft CC-16 barrel back runabout, '67 Mercury 500
                              SOLD

                              Comment


                              • #30
                                Sign up today
                                Re: '55 Aerocraft CC Resto

                                Last night I googled aluminum corrosion. Lots of info out there on planes and cars and boats. Most of the boat stuff dealt with pin holes.

                                Saw some different products that might work. Some people said baking soda wash and rinse, other say vinegar wash and rinse.

                                I too look at you pics and have trouble figuring out what this is. It doesn't seem to be structure, is it?

                                If not can you cut it out and fabricate a similar piece to fit what you need. Just thinking out loud.


                                1973 Starcraft 21 Mariner ---------------- 1966 Lone Star Medallion II --------------- 1963 14' Lone Star Big Fisherman

                                A Smart Phone is one that is Not in your hand when driving!

                                Comment

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