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    #1

    What have I done!-gctid383961

    Just kidding, but it sure felt like it at the time. Posting my step by step bow thruster install on a 1985 Contessa CB for anybody interested. Started yesterday but had to put it on hold because the tunnel is too short (ordered the correct one today). I'll keep posting until it's complete. I also finished a heavy cut polish that really brought the hull back to life.Gary,

    [img]/media/kunena/attachments/vb/687485=27917-IMG_1679.JPG[/img]

    [img]/media/kunena/attachments/vb/687485=27913-IMG_1673.JPG[/img]

    [img]/media/kunena/attachments/vb/687485=27914-IMG_1674.JPG[/img]

    [img]/media/kunena/attachments/vb/687485=27916-IMG_1678.JPG[/img]

    [img]/media/kunena/attachments/vb/687485=27918-IMG_1685.JPG[/img]Edit: Project is finished. Separate album below, see sig. All comments and criticism are welcome!
    Tags: None
    #2
    Please explain the bar sticking out of the hull.

    Now won't those holes take in a bit of water ? Or do you have some legs and fins stick out to kick and provide thrust ?
    Jim McNeely
    New Hope a 2004 Bayliner 305 Sunbridge Express Cruiser
    Twin 5.7s with Bravo2 drives
    Brighton, Michigan USA
    MMSI # 367393410

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      #3
      Very interested in this one! Can you give the costs as well? I know this is pricey, maybe more than I paid for my whole boat, but cheaper than buying a new boat with joystick controls.

      Comment

        #4
        JimMc wrote:


        Now won't those holes take in a bit of water ? Or do you have some legs and fins stick out to kick and provide thrust ?
        That's where the oars come out!

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          #5
          JimMc wrote:
          Please explain the bar sticking out of the hull.
          My bet would be that it is a compass to scribe the circle to be cut out.

          Comment

            #6
            Good job,

            Didn't 'ShipShape Tv' demonstrate this being performed by professional installers in the united States?

            I believe they provided an estimate on the cost (don't recall exactly, but I'm thinking -again could be mistaken-, around $7K to $9K for the install, including the thrust motors).

            They determine where the thruster hole is going to go, and they drill with a long 4' or 5' foot (I could be wrong, but it was long) drill bit that was about 1" in diameter. Then they add a large hole drill bit (19" inches...or something big) and follow using the pilot hole of that previous drill bit. They start from one side, and then go to the other side (using reverse, then forward on the cutting bit).

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              #7
              JimMc wrote:
              Please explain the bar sticking out of the hull.

              Now won't those holes take in a bit of water ? Or do you have some legs and fins stick out to kick and provide thrust ?
              That would be a scribe to mark the hole and then its reversed to the other side and marked on the other side and cut on the line.
              1989 Avanti 3450 Sunbridge
              twin 454's
              MV Mar-Y-Sol
              1979 Bayliner Conquest 3150 hardtop ocean express.
              Twin chevy 350's inboard
              Ben- Jamin
              spokane Washington

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                #8
                Wow! Bowthruster will sure be nice to have when you're finished but I'm not sure I'd have the stomach or nerve to cut those holes there :-)

                Comment

                  #9
                  Erik719 wrote:
                  My bet would be that it is a compass to scribe the circle to be cut out.
                  Correct

                  jhenkel wrote:
                  Wow! Bowthruster will sure be nice to have when you're finished but I'm not sure I'd have the stomach or nerve to cut those holes there :-)
                  I had a bit of heart burn, suggest taking Tums.

                  Gary.

                  Comment

                    #10
                    BaitGuru wrote:
                    Good job,

                    Didn't 'ShipShape Tv' demonstrate this being performed by professional installers in the united States?

                    I believe they provided an estimate on the cost (don't recall exactly, but I'm thinking -again could be mistaken-, around $7K to $9K for the install, including the thrust motors).

                    They determine where the thruster hole is going to go, and they drill with a long 4' or 5' foot (I could be wrong, but it was long) drill bit that was about 1" in diameter. Then they add a large hole drill bit (19" inches...or something big) and follow using the pilot hole of that previous drill bit. They start from one side, and then go to the other side (using reverse, then forward on the cutting bit).
                    That's right. I was quoted $7K here as well for a 3HP motor installed. Cutting the hole isn't hard, the thought of it is worse. What is critical is getting the hole in the right location. There are rules as far as were a tube should be located relative to the water line, the bottom of the V as well as how far forward. I found that a few installers don't know these rules and just rely on a good guess that's why I'm doing it myself. The eyebrow and fibreglass work is straight forward as well as the motor installation. I'll post as soon as I get to it.

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                      #11
                      any updates on this project? Would love to see more...

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                        #12
                        I missed this the first time around. I too would like to see and hear more about your project. Very cool. :worth

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                          #13
                          I want to know what you used/did to polish that hull!!! Damn that looks good!

                          Comment

                            #14
                            I used a product called Aquabuff, it's very gritty, feels like pudding with heavy grit sand in it. I then follow up with a fine cut compound (Gel Coat Labs fine cut) and finish with 3M Liquid Wax. That's after all the wet sanding of course.

                            Gary.

                            Comment

                              #15
                              Edit: More final touchups on the inside. Sound proofing not necessary but nice.

                              [img]/media/kunena/attachments/vb/702061=29491-IMG_1719.JPG[/img]

                              [img]/media/kunena/attachments/vb/702061=29492-IMG_1765.JPG[/img]

                              [img]/media/kunena/attachments/vb/702061=29493-IMG_1766.JPG[/img]

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