New to boats, need help!

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  • Thomas Bolger
    Junior Member
    • Mar 2016
    • 22

    #1

    New to boats, need help!

    I've got an old 40" v hull that was gas powered and I want to rebuild it electric. I have built rc trucks and planes but new to boats and could use any help I can get!
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  • photohoward1
    Fast Electric Addict!
    • Mar 2009
    • 1610

    #2
    Where in Ohio are you?


    Sent from my iPhone using Tapatalk

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    • Thomas Bolger
      Junior Member
      • Mar 2016
      • 22

      #3
      Cleveland

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      • runzwithsizorz
        Senior Member
        • Jan 2009
        • 896

        #4
        What batteries do you now have? Cells, and Mah. What is your budget? What transmitter(s)? Everything needed to convert that 40" boat could easily cost around $750, probably much more
        if you bought all new stuff. Is the boat pretty strong?

        Comment

        • Thomas Bolger
          Junior Member
          • Mar 2016
          • 22

          #5
          Yeah the boat is in good shape and strong. I'm about to reinforce the in side of the hull with fiberglass. I'm trying to get things together for this build. So I need info on motor size and kv and stuff to do this.

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          • Mxkid261
            Senior Member
            • Jun 2015
            • 734

            #6
            How fast do you want it to go I think is the main question lol

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            • tryinotocrash
              Senior Member
              • May 2012
              • 190

              #7
              http://www.offshoreelectrics.com/pro...eations+Motors
              This on 5s 2P Will be in the 50 Mph range if done right . I am sure others will chime in . Needs a big ESC and some 5000MAH batteries at a 50c rate should be a good start .
              Youll need a water can for the motor and a quality motor mount . I have this in a Vanquish from Hobby king and it roosts pretty good . Just one opinion.
              Don't forget to put your brain in gear before you engage your mouth! Thanks Dad!

              Comment

              • RCKong
                Fast Electric Addict!
                • Sep 2009
                • 1545

                #8
                If you are doing a conversion you'll need to seal up the hull and make it water tight if you can. I usually cut out thin marine ply, cover any holes and epoxy them and coat with z-poxy. Also if the boat has rails its not to hard to find or fab a motor mount. Also probably looking at .250 flex and hardware with a 160mm rudder with large trim tabs... you gotta start somewhere.

                Comment

                • runzwithsizorz
                  Senior Member
                  • Jan 2009
                  • 896

                  #9
                  Originally posted by tryinotocrash
                  http://www.offshoreelectrics.com/pro...eations+Motors
                  This on 5s 2P Will be in the 50 Mph range if done right . I am sure others will chime in . Needs a big ESC and some 5000MAH batteries at a 50c rate should be a good start .
                  Youll need a water can for the motor and a quality motor mount . I have this in a Vanquish from Hobby king and it roosts pretty good . Just one opinion.
                  800kv motor on 5s ????? Are you sure your brain is in gear
                  Yo OP, make Dasboata an offer on that Nue 1527 1.5 D/S 1500kv motor in the for sale forum, it would be the perfect motor for your hull.
                  You could run it on 3s serial, 4s serial, 6s parallel, and more.
                  You could save some money and buy a TP Power motor 4070 D 2050kv with a free jacket right here at OSE.
                  Last edited by runzwithsizorz; 03-24-2016, 10:04 AM.

                  Comment

                  • tryinotocrash
                    Senior Member
                    • May 2012
                    • 190

                    #10
                    Did you really read what I posted??? 5s 2p. Is 10 cells is it not??
                    Don't forget to put your brain in gear before you engage your mouth! Thanks Dad!

                    Comment

                    • runzwithsizorz
                      Senior Member
                      • Jan 2009
                      • 896

                      #11
                      Originally posted by tryinotocrash
                      Did you really read what I posted??? 5s 2p. Is 10 cells is it not??
                      Yes sir I did. two 5s (18v) 5000mah batteries in a 2p config. = 18v @ 10,000mah. Great if you have a 2000+ kv motor, (some rpm, and run time).
                      A 800kv motor as you recommended would require a 5s *SERIAL* config. = 36v @ 5000mah. Decent RPM, but with a heavy amp hungry mono such as the OP's,- 5000mah would last for maybe 2 and a half minutes tops.
                      In a nutshell; parallel (2p) is twice the mah, but the same voltage. Serial (#+S) is twice the voltage but the same mah.

                      Comment

                      • tryinotocrash
                        Senior Member
                        • May 2012
                        • 190

                        #12
                        My bad. I am running them pos to negative then to the esc and have no runtime issues. Your results may vary. I was under the impression that was 5s 2p but I have been wrong before.if I'm wrong I have no problem admitting I don't know everything.
                        Don't forget to put your brain in gear before you engage your mouth! Thanks Dad!

                        Comment

                        • runzwithsizorz
                          Senior Member
                          • Jan 2009
                          • 896

                          #13
                          Something that explains it better than I;---- https://www.youtube.com/watch?v=_dvjGIo4gQc

                          Comment

                          • photohoward1
                            Fast Electric Addict!
                            • Mar 2009
                            • 1610

                            #14
                            Originally posted by Thomas Bolger
                            Cleveland
                            Check your PM. Are you in a club in Cleveland? Would love to get together.

                            Comment

                            • Thomas Bolger
                              Junior Member
                              • Mar 2016
                              • 22

                              #15
                              Around 50 mph would be nice.

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