41" falcon cat build

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  • Brod
    Senior Member
    • May 2009
    • 196

    #16
    Originally posted by bustitup
    ya the orange grows on you..lol

    I have been trying to decide cog and how far i want to set the motor back..also an s bend or j bend in the stuff tube......I think I will go with s bend..also deciding weather or not to CF the floor..another decision is to put in a forward bulkhead or not...i think someone told me the hull may twist with this much torque without a bulkhead...will mount the strut and rudder and go from there


    I have seen you falcon run and its pretty awesome
    If it was me i wouldnt reinforce.asuming you are mounting the motor mount to the rails.
    Got to remember we have a 5+hp gas motor only mounted to the rails and no cracking,movement under load.
    I'll measure cog on ours a bit later for you,same hull,same cofg.
    You will be ok to adjust when built easy by moving the lipos back or forth.
    Personally i would mount the motor as far forward as possible,therefore enabling a straight tube through the bottom of the hull and then a bend under the hull.Just like the gas versions.
    I wouldnt bother with a bukhead either,more weight,

    Yours looks a downsight cleaner than ours,its gets oil and crap inside after a good few tanks.
    We are still experimenting with props,but the bad weather is against us at the mo'.
    Brod.
    Slow gets boring fast.

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    • bustitup
      Fast Electric Addict!
      • Aug 2008
      • 3071

      #17
      thanks for the info brod...looking forward to knowing your cog

      Originally posted by Brod
      If it was me i wouldnt reinforce.asuming you are mounting the motor mount to the rails.
      Got to remember we have a 5+hp gas motor only mounted to the rails and no cracking,movement under load.
      I'll measure cog on ours a bit later for you,same hull,same cofg.
      You will be ok to adjust when built easy by moving the lipos back or forth.
      Personally i would mount the motor as far forward as possible,therefore enabling a straight tube through the bottom of the hull and then a bend under the hull.Just like the gas versions.
      I wouldnt bother with a bukhead either,more weight,

      Yours looks a downsight cleaner than ours,its gets oil and crap inside after a good few tanks.
      We are still experimenting with props,but the bad weather is against us at the mo'.
      Brod.
      SPRINT CAT 40.........BOOGIMAN 25" MONO 8xl
      EX President of the Offshore FE Vultures Society

      Comment

      • NitroVal
        Senior Member
        • Jun 2009
        • 423

        #18
        Looks like the "Whataboat"...
        You should paste a giant Whataburger decal on the hull and maybe try for some sponsorship..
        J/K, I like it- it beats the drabby traditional white, red and yellow colors for sure
        The RTR Nightmare- Electric King of Shaves
        Now with 540s- 62mph
        New setup- Etti 150A's, Turnigy 2600s, 5S, X442s and a whole lot of cooling hoses

        Comment

        • bustitup
          Fast Electric Addict!
          • Aug 2008
          • 3071

          #19
          Originally posted by NitroVal
          Looks like the "Whataboat"...
          You should paste a giant Whataburger decal on the hull and maybe try for some sponsorship..
          J/K, I like it- it beats the drabby traditional white, red and yellow colors for sure
          Dude you just made me hungry.....they used to sell a giant cheeseburger smothered with jalopeno peppers....just peppers and musterd...yummmmmmm


          SPRINT CAT 40.........BOOGIMAN 25" MONO 8xl
          EX President of the Offshore FE Vultures Society

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          • crabstick
            Senior Member
            • Jul 2008
            • 954

            #20
            this is the exact powertrain im going to power my 1/8 AVL with ...

            Loving this build man!
            Matt.
            FE, Nitro and Gas racing in Auckland
            www.rcboats.co.nz

            Comment

            • Brod
              Senior Member
              • May 2009
              • 196

              #21
              Originally posted by bustitup
              thanks for the info brod...looking forward to knowing your cog
              my gas version is set at 13" from transom.
              Runs well.
              Hope it helps in initial setup..
              Brod..
              Slow gets boring fast.

              Comment

              • DISAR
                Fast Electric Addict!
                • Aug 2007
                • 1072

                #22
                Nice hull and color! The gel coat quality looks very good. It is a good idea to go with the Scorpion motor, very interested to see the results. What prop will you use?
                Twin Cat 135, Sprintcat40 (single-twin), DF 35", Maritimo, Mean Machine, SV 27
                http://www.rcfastboats.com/

                Comment

                • bustitup
                  Fast Electric Addict!
                  • Aug 2008
                  • 3071

                  #23
                  Originally posted by DISAR
                  Nice hull and color! The gel coat quality looks very good. It is a good idea to go with the Scorpion motor, very interested to see the results. What prop will you use?
                  of the b/s props i have in prather I have 215, 230, 235, 240.245

                  start with 230 and move up from there....i am going to use the maytech 200amp HV 10s esc with fans on both the motor and esc

                  i think it will take the 245 but we will see
                  SPRINT CAT 40.........BOOGIMAN 25" MONO 8xl
                  EX President of the Offshore FE Vultures Society

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                  • Rumdog
                    Fast Electric Addict!
                    • Mar 2009
                    • 6453

                    #24
                    I was just reading through this build while between coats of paint on my cat. I dont know why it popped into my head, but i really think that an outboard on a cat would make one totally awesome setup. Especially a great looking outrunner!

                    Comment

                    • ray schrauwen
                      Fast Electric Addict!
                      • Apr 2007
                      • 9471

                      #25
                      Nice cat. I have an orange 29" one coming from promise hobbies. They had to make it special for me. Should be here this week...

                      Your hull looks very similar to the 41" Chinese cats from Promise. Thats where I thought you got it from.

                      I'm going all orange. I have 2-DF orange monos, 26" & 33" and my Whip is going to be orange too. I think I'll paint my Lifter Orange or in the Elam paint sceme.
                      Nortavlag Bulc

                      Comment

                      • bustitup
                        Fast Electric Addict!
                        • Aug 2008
                        • 3071

                        #26
                        Thanks Ray...this IS the chinese cat from promise

                        I like the 29 also in fact i like most of the hulls from Frank...hes a great vendor

                        Originally posted by ray schrauwen
                        Nice cat. I have an orange 29" one coming from promise hobbies. They had to make it special for me. Should be here this week...

                        Your hull looks very similar to the 41" Chinese cats from Promise. Thats where I thought you got it from.

                        I'm going all orange. I have 2-DF orange monos, 26" & 33" and my Whip is going to be orange too. I think I'll paint my Lifter Orange or in the Elam paint sceme.
                        SPRINT CAT 40.........BOOGIMAN 25" MONO 8xl
                        EX President of the Offshore FE Vultures Society

                        Comment

                        • ray schrauwen
                          Fast Electric Addict!
                          • Apr 2007
                          • 9471

                          #27
                          Originally posted by RandyatBBY
                          I love my big 41 inch cat, I will enjoy watching your build. Who made the motor mount?
                          Looks home made from some 1/4" thick wall box Aluminum. I like the water cooling face.

                          I'll make my own motor mount for the 29" one using similar materials from Metal Supermarkets.
                          It takes little effort to make nice mounts like that. Some elbow grease, hack saw, drills and files.
                          Nortavlag Bulc

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                          • bustitup
                            Fast Electric Addict!
                            • Aug 2008
                            • 3071

                            #28
                            OK big update here this boat just got bought by my son in law and I get to help him build it which is great since I had to sell it now I get to help design and help with the build and watch it run,,,,but some big changes Have been made.....my son in law (Eric) is kind of nuts...no other way to put it...everything he does had to run on its limits so I just ordered another 4035 800kv outrunner and two swordfish 240 HV esc's...two speedmaster stingers and going to run twins in this boat....just ordered the 8 6s turnigy's so the boat will run on 12s for each motor


                            I need some help on what left and right prop to start with...andy brown from cmdi has a matched set of x450/3 I could start with...any suggestions here?...flex shafts are .187 with 3/16" prop shafts l&r naturally

                            this build will move much faster now
                            the goal is 100mph
                            SPRINT CAT 40.........BOOGIMAN 25" MONO 8xl
                            EX President of the Offshore FE Vultures Society

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                            • Brushless55
                              Creator
                              • Oct 2008
                              • 9488

                              #29
                              Twins!
                              .NAMBA20...Caterpillar UL-1, P-Spec OM29, P-Mono DF33, P-Spec JAE, Aussie 33" Hydro-LSH, Sprintcat CC2028 on 8s, PT SS45 Q Hydro, PS295 UL-1 power, OSE Brothers Outlaw QMono 4-sale, Rio 51z CC2028 on 8s

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                              • rearwheelin
                                Fast Electric Addict!
                                • Oct 2008
                                • 1941

                                #30
                                Nice !! My thought were twins also, Im threw with singles, I burn up too much $$$$ , you are way less likely to burn stuff up if you take a hot setup in a single prop boat and double it you will have about 50% less amp draw on you systems. Just my thought on the front of this hull looks like it could generate some serious up lift, might blow over on you before u hit 100mph, looks like it will run nice and light though...
                                Hope the Sprint cat worked out ! I just ordered a Aeromarine 42'' Conquest cat.
                                Ordered it with no bulk head or strakes, with carbon fiber. I m going to put 4 Turnigy 180 amp esc's, 4= 540xl 9t, 4=447x left n rights. Should be good for 720 amps continuous, 1440 amp quick bursts, I will run it on 4 to 6s , I will try 4s first.
                                Last edited by rearwheelin; 03-25-2010, 01:53 AM.
                                "Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction."
                                --Albert Einstein

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