1/6th Scale Crackerbox - Ruleset

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  • blizard05
    Senior Member
    • Jun 2007
    • 576

    #166
    NICE Solid or flex,prop under hull,what hardware ? Are there any plans yet? I will have to build one. Larry
    America home of the free, thanks to the brave [/url]

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    • Hydromaniac
      Senior Member
      • Oct 2007
      • 816

      #167
      Originally posted by blizard05
      NICE Solid or flex,prop under hull,what hardware ? Are there any plans yet? I will have to build one. Larry
      Thank you Larry, There are no plans for this hull it is my own design, I prefer to work with demensions and measurements however some builders are scaling the Dunlap 1/10 and 1/4 Crackerbox plans to get a 1/6 build, they are scaling up or down accordingly to get a hull in the 28-32 inch range. On this build I will be using a flex cable subsurface driveline with an under the hull strut. But a solid shaft would work well also. See post #158 and 159 for the set up I'll be using. We have an agreement for the FE Nats to run either a under hull straight shaft of a flex line that need be under the hull but allows the prop to extend past the transome a bit. We'll be running these set ups for some exhibition races at the Nats. But builders who have no desire to race can build it to their choice. Also there is a fiberglass hull that will be out soon as well as a short kit that will be out soon (If interested get with Flyguy55 on the forum) , And a full build very detailed kit from Legend Boats. I have finished the hull and will be installing the running gear and testing shortly. Here are some pics of the hull ready for final install. I'll post more in coming days. I modified some pilot bust for drivers as none are available that I can find in this size,
      Attached Files
      www.rockymountainthunderboats.org

      Comment

      • Hydromaniac
        Senior Member
        • Oct 2007
        • 816

        #168
        A few more pics ready for hardware.
        Attached Files
        www.rockymountainthunderboats.org

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        • sailr
          Fast Electric Addict!
          • Nov 2007
          • 6927

          #169
          What happened to the fiberglass hull somebody was making? Any news?
          Mini Cat Racing USA
          www.minicatracingusa.com

          Comment

          • Hydromaniac
            Senior Member
            • Oct 2007
            • 816

            #170
            Originally posted by sailr
            What happened to the fiberglass hull somebody was making? Any news?
            It is very close, we should have a date next week. The first one is out of the mold .
            www.rockymountainthunderboats.org

            Comment

            • sailr
              Fast Electric Addict!
              • Nov 2007
              • 6927

              #171
              Great. Keep us posted!

              Originally posted by Hydromaniac
              It is very close, we should have a date next week. The first one is out of the mold .
              Mini Cat Racing USA
              www.minicatracingusa.com

              Comment

              • blizard05
                Senior Member
                • Jun 2007
                • 576

                #172
                NO FG for me, I'l go with wood, I built 4 -1/10 C boxes and 4-1/4 zipp kit C boxes,looking forward to building the 1/6 C box Larry
                America home of the free, thanks to the brave [/url]

                Comment

                • blizard05
                  Senior Member
                  • Jun 2007
                  • 576

                  #173
                  Wel,I took the first step today,ordered the wood from National Balsa,about 50 mi from me. I will be modifying a Dumas SK into a C box, if I square up the sides it looks like a C box, almost flat on the bottom,L and W are good, wil add 2-3 in to length. The SK 2 is 27 in,want to end up with 29-30 in. WHAT do you think?? Larry
                  America home of the free, thanks to the brave [/url]

                  Comment

                  • Rumdog
                    Fast Electric Addict!
                    • Mar 2009
                    • 6453

                    #174
                    Damn you work fast Hydromaniac!! That C-box is beautiful!

                    Comment

                    • Hydromaniac
                      Senior Member
                      • Oct 2007
                      • 816

                      #175
                      Originally posted by blizard05
                      Wel,I took the first step today,ordered the wood from National Balsa,about 50 mi from me. I will be modifying a Dumas SK into a C box, if I square up the sides it looks like a C box, almost flat on the bottom,L and W are good, wil add 2-3 in to length. The SK 2 is 27 in,want to end up with 29-30 in. WHAT do you think?? Larry
                      Thats funny, I thought about the same thing The SK is very close to a CB, I think your plan may work fine, Have fun with it. Thats the main idea. Keep us posted as to how it works out.
                      www.rockymountainthunderboats.org

                      Comment

                      • Hydromaniac
                        Senior Member
                        • Oct 2007
                        • 816

                        #176
                        Originally posted by Rumdog
                        Damn you work fast Hydromaniac!! That C-box is beautiful!
                        Thank you, I am pushing things as we are having a warm spell and a pond is open so I plan to give it a go this weekend.
                        www.rockymountainthunderboats.org

                        Comment

                        • Hydromaniac
                          Senior Member
                          • Oct 2007
                          • 816

                          #177
                          Finished

                          I spent most of Saturday finishing the Crackerbox, To get her redy for a test run, the first thing I did was to add the fotation, I used swimming pool noodle cut in to 6 inch sections and stuffed the cavities of the nose with it, Next I added bunks on the bulkheads near the floor in order to hold the batteries secure and increase COG adjustment, I also added a stand or shelf for the ESC. I waterproofed the bunks and shelf and moved on to the cooling pick up which I installed through the floor near the transome. Next I installed the Blackjack motor and strut. I sealed the adjustable strut where it enters the hull with some white caulk and let dry. Once dry I added the .130 drive cable, motor coupler and teflon tube then used shrink tube to help keep water out. I am using an SV-27 esc I had on hand which works well with the BJ motor and is smaller then the proboat esc. I then added a set of trim tabs I had built from aluminum angle and installed the rudder and steering servo assembly. Now the receiver and test, Everything went well and worked out for the bench test. I decided to add an antenna tube to the cockpit behind the mechanic that can be removed when not running but allows the receiver wire to be raised when in use. It looks like I'm ready for a test run today. Here are the photos of the lay ouy and hardware all ready to go.
                          Attached Files
                          www.rockymountainthunderboats.org

                          Comment

                          • blizard05
                            Senior Member
                            • Jun 2007
                            • 576

                            #178
                            VERRY NICE set up,good luck on your test run. Larry
                            America home of the free, thanks to the brave [/url]

                            Comment

                            • Hydromaniac
                              Senior Member
                              • Oct 2007
                              • 816

                              #179
                              Originally posted by blizard05
                              VERRY NICE set up,good luck on your test run. Larry
                              Thank you!! I'm excited but no test yet.
                              www.rockymountainthunderboats.org

                              Comment

                              • Hydromaniac
                                Senior Member
                                • Oct 2007
                                • 816

                                #180
                                Well the test did not happen, as mother nature did not cooperate. The pond that was open now has about a 10 foot ring of ice around it. It has been warm here during the day but pretty cold at night, Forercast is for warm days this week if the pond opens back up I'm ready.
                                www.rockymountainthunderboats.org

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