27" carbon cat black edition build

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  • kfxguy
    Fast Electric Addict!
    • Oct 2013
    • 8746

    #61
    I need some advice fellas. I'm at a road block. I'll admit, I didn't plan this part out too well because had I known, I would have machined the offset bracket with an open bottom. I could still do that but I'd had to make another bracket. So I have three choices and I'll list from easiest to hardest and I'll post pics illustrating what I mean.

    1) flip the linkage boot inside the hull. Easiest and possibly the cleanest solution

    Like this.




    Or I could machine a spacer and powder coat it black. It would space the whole strut out and extend the length of the boat. I never really got a solid answer on what moving the prop and/or rudder father from the transom does. Any insight on this is appreciated. I always thought the closer the prop is the harder to bring the bow up.


    Here's what I'm faced with. Just too close and the boot hits the bracket. That will wear a hole in it.






    And here's how it would be if I spaced it off the transom. Notice this boat which is a larger version of the hull I'm building, has a spacer built on to the transom

    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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    • kfxguy
      Fast Electric Addict!
      • Oct 2013
      • 8746

      #62
      And the 3rd option is to machine the bracket where one side is open like this


      Something like this except I'd make the bottom open


      32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

      Comment

      • kfxguy
        Fast Electric Addict!
        • Oct 2013
        • 8746

        #63
        Let me add one more option I just thought about. Ok, I could mill out the bottom and then add a piece of 3mm carbon plate back on the bottom


        Cut this part out
        Then recess a 3mm carbon strip to strengthen the bottom back.


        32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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        • CraigP
          Fast Electric Addict!
          • May 2017
          • 1464

          #64
          Why not put the boot on the inside?
          Attached Files

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          • kfxguy
            Fast Electric Addict!
            • Oct 2013
            • 8746

            #65
            Originally posted by CraigP
            Why not put the boot on the inside?
            That was pic and option one. Which would be easiest but sometimes I like to make things more difficult to be different lol
            32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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            • Erroneous
              Senior Member
              • Apr 2016
              • 451

              #66
              Could you just stick the boot through the hull a little further? Just past a ridge splitting inside/outside. If it still seals well that is.IMG_1349.jpg Did it on BJ#2 because the hole was a little loose. Works great........ I mean... I know a BJ doesnt hold a candle to this build but....
              Last edited by Erroneous; 09-20-2017, 04:49 PM.

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              • fweasel
                master of some
                • Jul 2016
                • 4288

                #67
                Maybe you're over thinking this. Inverting the boot like you did on my boat looks cool and would work out just fine. The only downside is, you can't easily pull the boot out to use the hole as a drain if the boat spend a little too much upside down, something I wish I could do on mine, as water is tricky to get out of this small hull. If the edges are smoothed out on the aluminum bracket, I don't see wear as an issue for the limited amount of travel that boot will see if you were to install it in the traditional manner. I would ditch all ideas that involve cutting material away from your bracket. If/when this boat crashes, it will be doing so at very high speeds and we already know where the force is being concentrated on mine...

                This reminds me of one additional improvement. Powder coat your steering push rod. Assuming you're making yours from the same material used in my boat, it's starting to oxidize. PC that sucker black or better yet, if you do the entire hardware group in black, make the pushrod your patented green color as the single accent rather than a green antenna mast.
                Vac-U-Tug Jr (13mph)

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                • kfxguy
                  Fast Electric Addict!
                  • Oct 2013
                  • 8746

                  #68
                  Originally posted by fweasel
                  Maybe you're over thinking this. Inverting the boot like you did on my boat looks cool and would work out just fine. The only downside is, you can't easily pull the boot out to use the hole as a drain if the boat spend a little too much upside down, something I wish I could do on mine, as water is tricky to get out of this small hull. If the edges are smoothed out on the aluminum bracket, I don't see wear as an issue for the limited amount of travel that boot will see if you were to install it in the traditional manner. I would ditch all ideas that involve cutting material away from your bracket. If/when this boat crashes, it will be doing so at very high speeds and we already know where the force is being concentrated on mine...

                  This reminds me of one additional improvement. Powder coat your steering push rod. Assuming you're making yours from the same material used in my boat, it's starting to oxidize. PC that sucker black or better yet, if you do the entire hardware group in black, make the pushrod your patented green color as the single accent rather than a green antenna mast.
                  Damn you have good ideas! You know, for a while I was putting drain plugs in my boats but I stopped for some reason. I have a stainless rod for this one but I think your right, I'll powder coat it. Are you ok with drilling a hole in the transom? If so I'll send you a nifty drain plug that doesn't fall out when you pop it out. I have about a dozen of them. If you still want that rudder I can send it to you with it. Also, during the winter, pull the steering rod out and send it to me and I'll powder coat it for you. Of course no charge for any of it


                  Yea I think your right. I'm over thinking it. I think what I'm gonna do is invert the boot and make a billet push in ring.
                  32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

                  Comment

                  • kfxguy
                    Fast Electric Addict!
                    • Oct 2013
                    • 8746

                    #69
                    Damnit. I realized this esc I bought for this thing is 4s to 6s. That's not gonna work for me. I need it to at least go down to 3s. Anyone know if it will actually work on 3s? I really do t know what my other options are. If I could find a mamba xl2 I could machine a custom case for it. I thought about a mamba monster2 or a mamba x and water cool those but I really would like xl2....I could make a killer looking case for it. I could machine it out of a solid piece of billet and incorporate a carbon top plate. Any other ideas? My maximum height can only be 26-27mm
                    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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                    • kfxguy
                      Fast Electric Addict!
                      • Oct 2013
                      • 8746

                      #70
                      Ok well disregard the above post. It works on 2s and 3s so I'll forge ahead. Typo on the ose store and on hifei website. When I plugged it into the programming software it says 220a 2s-6s
                      32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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                      • fweasel
                        master of some
                        • Jul 2016
                        • 4288

                        #71
                        Glad to hear it. I'll probably swap to that same ESC as well if it works out well for you.
                        Vac-U-Tug Jr (13mph)

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                        • kfxguy
                          Fast Electric Addict!
                          • Oct 2013
                          • 8746

                          #72
                          Ok fellas. Where should I put the water outlet? I was thinking in that bump to the right. I'll pc some brass tubing black. Or should I put it in the intention to the left? I could flush mount it in the bump.....


                          32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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                          • fweasel
                            master of some
                            • Jul 2016
                            • 4288

                            #73
                            Bump on the right, pc it black.
                            Vac-U-Tug Jr (13mph)

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                            • Jesse J
                              scale FE racer
                              • Aug 2008
                              • 7119

                              #74
                              When I had my hotr cat almost 10 years ago, I put two exhaust tubes out the intentions... you could run your output through one of those?!?!
                              "Look good doin' it"
                              See the fleet

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                              • kfxguy
                                Fast Electric Addict!
                                • Oct 2013
                                • 8746

                                #75
                                There's no turning back now...........
                                32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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