Some Advice Needed on an Upcoming Build

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  • boredom.is.me
    Senior Member
    • Jun 2009
    • 595

    #1

    Some Advice Needed on an Upcoming Build

    Before I start asking a million questions in a million different threads, I figured I should just start one central thread. There will (hopefully) be a Vac-U-Pickle on its way to me soon. I plan on building it in stages.

    First I asked about Teflon vs Brass bushings.

    Then I asked about painting the hardware as I do not like silver. This (see pic) is why. I made this years ago so cut me some slack. I am just using it to get a rough idea for a scheme.
    Vac-U-Pickle-Scheme.jpg


    Now I ask about connectors. For how simple the idea is, I am finding myself very puzzled. The boating community uses 5.5mm bullets on boats this large. I was going to start off with two 3600mah 2s lipos that I already have. They come equipped with HXT 4mm bullets and 10AWG wire. Should I switch them out for 5mm bullets? I know there are larger batteries that come equipped with these 4mm connectors.

    Then there is the motor that comes equipped with 4mm bullets. Again, do I swap them out for 5.5mm bullets?

    My desired ESC is a Turnigy Marine 120A. My motor options are XK3674 2200kv or XK3674 1900kv.

    Thanks,
    Kev
  • Fluid
    Fast and Furious
    • Apr 2007
    • 8011

    #2
    A lot depends on what you expect from your boat. The HXT connectors are rated up to 70 amps ( http://www.progressiverc.com/hxt-4mm...s-2-pairs.html ) but boats are not cars - most FE boat applications exceed that amp draw. Too, running any part in an FE boat at its maximum rating is usually a poor idea as it reduces efficiency and increases heat. Your motor selection can easily pull 100 amps or more, so yes I'd change the connectors out to 5.5mm bullets. Be sure to polarize them (male - / female + ) to reduce the chance of plugging your packs in backwards.




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    • grsboats
      Senior Member
      • Jul 2012
      • 975

      #3
      I think both teflon or brass bushing work great for any aplicattion.In my case that run riggers the speedmaster brass bushing gives better suport with no endplay for long time.Gill
      GO FAST AND TURN RIGHT !
      www.grsboats.com.br

      Comment

      • kendt
        Senior Member
        • Jul 2011
        • 557

        #4
        I really like those hulls. If they were bigger i'd be all over one. Not much chance of fitting a 6s pack in those.Cant wait to see the finished boat.

        Comment

        • boredom.is.me
          Senior Member
          • Jun 2009
          • 595

          #5
          Thanks guys. I'll definitely switch ALL connectors to 5.5mm bullets (polarized of course).

          I'm going with the Speedmaster 21 strut with the brass insert.

          I'll post pics of the build. It's gonna be a slow a build though.

          Comment

          • boredom.is.me
            Senior Member
            • Jun 2009
            • 595

            #6
            I started my build thread.
            http://forums.offshoreelectrics.com/...940#post508940

            Comment

            • boredom.is.me
              Senior Member
              • Jun 2009
              • 595

              #7
              Now I need help sourcing linkage components. I do not those quick connectors (E/z) at all. I would like to use ball links, but I'm having trouble finding the right part. I am using a UL-1 Ruder assembly. The control horn has a 3mm hole for the linkage. What I need is a ball link that uses a 2mm or 4-40 pushrod, but has a 3mm hole in the ball. Kintec has an anodized ball link, but it's that generic orange while my boat is black, red, and white. I have found M3 ball links, but they use 3mm pushrods. I have found what I need, but not in the US. I would really appreciate it if someone can help me out.

              Comment

              • steveo
                Fast Electric Addict!
                • Apr 2007
                • 1454

                #8
                there is not much room on the back of that hydro for hardware mounting. maybe 1 1/4 inch but I think less alot use the fullers hardware because of its small foot print and the rear taper to each side so the wider the strut mount the less height u have I used bby racing hardware and worked great. just giving u a heads up see if anybody can take a measurement for u before u buy

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                • steveo
                  Fast Electric Addict!
                  • Apr 2007
                  • 1454

                  #9
                  just saw the build thread looks like it works

                  Comment

                  • boredom.is.me
                    Senior Member
                    • Jun 2009
                    • 595

                    #10
                    The UL-1 rudder bracket is just the right size. The strut bracket is fine though.

                    I still need a little help with the linkage.

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