my first scratch 38` cat built

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  • 08gtrking
    Member
    • Aug 2010
    • 91

    #1

    my first scratch 38` cat built

    Well i have already almost finished this build, sense the site i posted the build on (link) is kinda dead i decided to post it here with pics of current progress , i have already ordered the hardware(link) and i want to start to order motor etc.. i would appreciate feed back of my set up for 60 mph+ set up
    motor 4082 1500kv
    esc t180
    batts 3`s series for 6`s
    prop going to start with a x445
    hardware http://cgi.ebay.com/sliver-110mm-rud...item20b7c9b439

    Speed - Electric - my First scratch build - First off i want to say thanks to MaxCorvette for the plans and SV27dayton, KD0EM,and everyone else i left out for the help.I have just finished cutting all the balsa wood its 1/8 inch the boats length is 36inches and im not sure what to do next before i epoxy the stringers
    Attached Files
  • Boaterguy
    Fast Electric Addict!
    • Apr 2011
    • 1760

    #2
    I think the setup is good, KV may be a little high for 6S, but it's gonna be nice.

    Comment

    • johnson22456
      Counting down the days...
      • Jul 2008
      • 218

      #3
      The kv is fine. That leopard will rock in that boat. Larrys h&m drifter with that same motor was in the 60's running around a x447 or x450, but your smart to start smaller. I also love the 180 speedos, but disable the bec if your gonna run it on 6s. You should have a nice reliable setup there.
      Hpr 115, Neu 1521 1.5d x2. Delta force Pirate, Insane 45" Neu 2230

      Comment

      • LarrysDrifter
        Big Booty Daddy
        • May 2010
        • 3278

        #4
        Thanks Eric. I ran an X445 to start and was at 62mph and very cool temps. Great set up for your cat. Again, another misleading comment by an inexperienced member.( Not Johnson ).

        Comment

        • LarrysDrifter
          Big Booty Daddy
          • May 2010
          • 3278

          #5
          Set the center of gravity to 30% and adjust from there. You have the perfect combo to meet and exceed your speed goal.

          Comment

          • 08gtrking
            Member
            • Aug 2010
            • 91

            #6
            ok thank you guys for replying

            Comment

            • 08gtrking
              Member
              • Aug 2010
              • 91

              #7
              Originally posted by LarrysDrifter View Post
              Set the center of gravity to 30% and adjust from there. You have the perfect combo to meet and exceed your speed goal.
              when you say adjust from a 30% of center of gravity means to adjust every thing inside to balance the boat from 30%? sorry for the dum question
              Last edited by 08gtrking; 06-26-2011, 12:38 PM.

              Comment

              • Boaterguy
                Fast Electric Addict!
                • Apr 2011
                • 1760

                #8
                It means he has it currently set at 30% from the transom. He will adjust depending on the ride attitude of the boat.

                Comment

                • johnson22456
                  Counting down the days...
                  • Jul 2008
                  • 218

                  #9
                  You will want to measure from the sponson transom. 30% of 38" = 11.4". Should be a good place to start.
                  Hpr 115, Neu 1521 1.5d x2. Delta force Pirate, Insane 45" Neu 2230

                  Comment

                  • 08gtrking
                    Member
                    • Aug 2010
                    • 91

                    #10
                    ok i understand now ,well im going to order batts and motor etc.. in about 2 weeks ,this week im going to be sanding the boat down so i can primer it (seal) ,and im gong to create a mold so i can make fiberglass version.

                    Comment

                    • 08gtrking
                      Member
                      • Aug 2010
                      • 91

                      #11
                      ok i recieved the hardware today shipping was pretty fast but when i put the flex shaft through the shaft holder it hits the rudder looks like a 1/4 shaft instead of a 3/16 and is too long , i contacted the seller lets see what he replys
                      Attached Files

                      Comment

                      • Rumdog
                        Fast Electric Addict!
                        • Mar 2009
                        • 6453

                        #12
                        Loosen the set screw on the drive dog and slide it towards the threaded end. Also be sure to grind a small flat on the prop shaft where the set screw will seat.

                        Comment

                        • Jacked1
                          Senior Member
                          • Jun 2010
                          • 772

                          #13
                          Originally posted by 08gtrking View Post
                          ok i recieved the hardware today shipping was pretty fast but when i put the flex shaft through the shaft holder it hits the rudder looks like a 1/4 shaft instead of a 3/16 and is too long , i contacted the seller lets see what he replys
                          The strut is in there backwards, the tapered end should point toward the front of the boat and that should fix the clearance problem. But that is weird they would send you a 1/4in setup?
                          And good job on the hull!
                          Fleet: 55" Quad inline T600 Cigarette boat, Twin Mean Machine, Twin T600 47" mystery mono, 4082 Surge Crusher, 1717 8s Genesis, 4074 Villain, "mini mono", 52" Bonzi, Prather Funcruiser, 2 DPI 3.5cc tunnels, 5' Styrofoam recover barge

                          Comment

                          • 08gtrking
                            Member
                            • Aug 2010
                            • 91

                            #14
                            [QUOTE=Jacked1;334849]The strut is in there backwards, the tapered end should point toward the front of the boat and that should fix the clearance problem. But that is weird they would send you a 1/4in setup?
                            And good job on the hull![/QUOTE
                            i feel so dum right now i ,i fliped the strut over and fits perfect and i mesearued the flex shaft and it is the 3/16 thank you sooooo much !!

                            Comment

                            • Boaterguy
                              Fast Electric Addict!
                              • Apr 2011
                              • 1760

                              #15
                              Don't worry, I've seen more than just you do it, I would have if I wasn't on a forum and read multiple builds.

                              Comment

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