Mini Rivercat redo

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  • kfxguy
    Fast Electric Addict!
    • Oct 2013
    • 8746

    #1

    Mini Rivercat redo

    I've had this neat little cat for a while. I haven't done much with it. I posted a thread where I was attempting 75mph with it. I got pretty close even tho I didn't try or put much time into it. Note that I sold my 32" Rivercat I figured I'd put a little into it and make it a touch faster but a bit nicer. I've learned a lot since building this cat so I'd like to apply some of that here. There's a few things I don't like about it. Heres a list.

    Wires. Messy and all over the place. The cooling lines are right in the way.

    Servo. It's a $15 pro boat servo. Slow, weak and big. I've already ordered it's replacement. Much nicer, stronger, smaller and faster.

    Steering linkage. Flimsy, ugly. I came up with a new setup that has a slightly larger stainless rod that will be polished. No threads on it either.

    Rudder offset. It's originally a inline setup. The bracket is too long and just didn't look right. I'm going to replace it with the right stuff. While I'm at it I'll mill out the linkage pass through hole in it to cut down drag at low speeds.

    Cooling lines. Like I said they are I the way. I'm going to replace them with nicer but thinner lines and reroute for a cleaner look. I also got rid of the through transom fitting in favour of a through hull ring that the hose slides through. It eliminates two house connections. I also moved the exit fitting to the middle side of the boat instead of the rear. I used a ul1 drain plug to fill the hole that was in the transom. Also makes it to where I don't have two hoses going to the rear.

    Motor. It's a finned version castle. I don't like the look of it off the cooling jacket. I'll shave the fins off, polish and put a nicer jacket on.

    Receiver. It's right in the way where I'd like to have a gps. I'll move it and figure something on hiding the wires.

    Hers some before pictures. I'll post some after pictures one I start putting it back together.







    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was
  • kfxguy
    Fast Electric Addict!
    • Oct 2013
    • 8746

    #2
    And another rear pic.

    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

      #3
      Got a few things done and need some opinions. Here's the rudder offset I changed to.



      And notice the through hull ring now. Muuuuuuuch easier to run hose though this than to try and fit it on a nipple and put a wire tie on it so it don't pop off. Makes me agitated just thinking about it!



      And notice the little 90 degree swivel for the rudder hose. Did the same on my 32" Rivercat. Like that little touch. Guess it looks sleeker.

      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

        #4
        Now here's where I need some feedback. I'm not too much for painting a carbon hull. Call me boring, I just like the carbon look. I like to put a little color on it I guess, so it gets some simple decals. Should I put the "Rivercat mini" obit straight, at an angle or none at all?







        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

          #5
          I milled out the offset bracket to cut down drag while it's not on plane. Seems to pull a little one way because of it. Untouched one for comparison.

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

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          • Luck as a Constant
            Make Total Destroy
            • Mar 2014
            • 1952

            #6
            Mini Rivercat redo

            The rivercat sticker looks strange diagonal unless the cat decal were placed diagonal too
            Go straight


            Sent from my iPhone using Tapatalk
            There's a hole at the center of earth where the rest of the world sinks but i stand still...

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            • Luck as a Constant
              Make Total Destroy
              • Mar 2014
              • 1952

              #7
              On the offset, it looks like there isn't much meat left? No concerns?


              Sent from my iPhone using Tapatalk
              There's a hole at the center of earth where the rest of the world sinks but i stand still...

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              • kfxguy
                Fast Electric Addict!
                • Oct 2013
                • 8746

                #8
                Originally posted by Luck as a Constant
                The rivercat sticker looks strange diagonal unless the cat decal were placed diagonal too
                Go straight


                Sent from my iPhone using Tapatalk

                Gotcha. Thx
                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

                  #9
                  Originally posted by Luck as a Constant
                  On the offset, it looks like there isn't much meat left? No concerns?


                  Sent from my iPhone using Tapatalk
                  It's a thick version. I didn't really take any from the top, widened it and thinned the bottom a good bit.
                  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

                    #10
                    I blue printed the sponsons. I had to throw it back together last night because my buddy wanted to go run this morning. The sponsons were hooked prett bad on the last two ride pads got that fixed and she runs even nicer. Water was prett choppy and she soaked it up right to the point where it caught a ripple, dove down and disappeared. I don't know how long it was under for but it felt like eternity. I was getting ready to walk back to the car and my buddy said there it is. It came back up a few feet from where it dove under. Whew. Thought I lost the little meanie. No water in it either which is awesome. I should have a video emailed to me sometime today.
                    Last edited by kfxguy; 02-23-2015, 01:41 AM.
                    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

                      #11
                      I received some more items in today (finally!) to get more of this rebuild done. The servo, steering rods and water fittings came in. I chose a strong little short savox servo to replace the spectrum miss geico servo it had. It was slow, and wasn't quite strong enough. I went up put the savox it and it was a tab wider. Dang. So I pulled the mount out and made another one, nicer this time. I also decided the spaghetti sterring rod just wasn't gonna cut it. It was corroded and starting to rust anyway so I replaced it with a muuuuuuch stronger stainless rod. Very hard to bend. I'll be using these rods in future builds for sure. I repositioned the servo and remade the rod with much less bends. Turned out much better. Boat should drive Better now with no slack.

                      Junk steering rod I had:



                      New servo and mount




                      Stainless rod I used.
                      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

                        #12
                        Installed. Look how much better and stronger the steering rod looks





                        And the 90 degree fittings on the water lines. I actually have some much better looking stainless ones on order but they haven't come in yet. These will at least get the water lines out my way.





                        Next I'm gonna shave the fins off the motor and put a lighter, better looking cooling jacket on. This will take some higher locted weight off. I always try to make things light up high and heavier down low. Helps to keep the boat planted (my theory anyway) and helps the boat live up to the name "cat" so when it flips it lands right side up. Sounded good anyway lol.
                        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

                          #13
                          Well I decided to rip it all out and start over. Omg it was a pain to get the motor mounts out. At least I know they were in good! I'm basically gonna sand it and revolt the carbon. It seems like it was done too dry. Figured I might as well fix it right.




                          And after sanded and cleaned. I already did the epoxy too. It's setting up right now.

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

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                          • Luck as a Constant
                            Make Total Destroy
                            • Mar 2014
                            • 1952

                            #14
                            Oh Travis.... Lol


                            Sent from my iPhone using Tapatalk
                            There's a hole at the center of earth where the rest of the world sinks but i stand still...

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                            • kfxguy
                              Fast Electric Addict!
                              • Oct 2013
                              • 8746

                              #15
                              Originally posted by Luck as a Constant
                              Oh Travis.... Lol


                              Sent from my iPhone using Tapatalk
                              I know I know. I've got quite a few irons in the fire right now. I really wanted to run an mbp collet and the way things were, it wasn't going to fit no matter what. I'm changing the motor mount to a kintec slider mount also. It's definately going to be nicer, it really deserves it. This is a sweet little boat. The stuffing tube epoxy will be redone too. Stay tuned, letting epoxy cure.
                              32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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