Pressurized hull challenge

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  • Peter A
    Fast Electric Addict!
    • Sep 2012
    • 1486

    #16
    Have you considered this. If you tape up well and seal the hull, when you run a boat the motor esc and batts all heat up. This in turn heats the air inside the hull which expands and creates a small amount of positive pressure inside the sealed hull, the effect of which helps to prevent water ingress.
    NZMPBA 2013, 2016 Open Electric Champion. NZMPBA 2016 P Offshore Champion.
    2016 SUHA Q Sport Hydro Hi Points Champion.
    BOPMPBC Open Mono, Open Electric Champion.

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    • Cooper
      Fast Electric Addict!
      • Jan 2011
      • 1141

      #17
      Originally posted by Peter A
      Have you considered this. If you tape up well and seal the hull, when you run a boat the motor esc and batts all heat up. This in turn heats the air inside the hull which expands and creates a small amount of positive pressure inside the sealed hull, the effect of which helps to prevent water ingress.
      Exactly, you beat me to that comment. Only thing I've ever done is I had some of that compressed air in a can and it was co2, I occasionally spray it under the hatch as I'm sealing up a saw boat. The only reason I occasionally do this is when I'm potentially expecting something to blow up, catch fire and maybe it will help by not having as much oxygen inside the hull after taped up. But now they use some compressed stuff that is flammable, so that defeats that. (Kids were inhaling the co2 so they changed it as a deterrent to inhaling.). As far as pressurizing if you were able to what benefit were you thinking it would add? Buoyancy? Structural support? I just can't figure what it would benefit.

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      • Fluid
        Fast and Furious
        • Apr 2007
        • 8011

        #18
        ....I remember when altering props was a stupid idea...
        Really? My fellow racers and I were modding props in the 1970s and we were hardly the first. Instead of helping us to understand why you really want a pressurized hull, you get defensive and dis people. Of course this starts the sh**-storm you see above and the thread deteriorates. It's your thread, take responsibility for it; bring it back to a high level - or close it.



        .
        ERROR 403 - This is not the page you are looking for

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        • Doby
          KANADA RULES!
          • Apr 2007
          • 7280

          #19
          Originally posted by Bduncan
          Longer term i could envision it being used for dynamic
          ballasting in turns hole shots etc...
          .
          Explain please..
          Grand River Marine Modellers
          https://www.facebook.com/search/top/...ne%20modellers

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          • properchopper
            • Apr 2007
            • 6968

            #20
            2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
            2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
            '11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono

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            • grsboats
              Senior Member
              • Jul 2012
              • 975

              #21
              I'm still trying to find a benefit!?Gill
              GO FAST AND TURN RIGHT !
              www.grsboats.com.br

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              • DPeterson
                Senior Member
                • Apr 2007
                • 842

                #22
                I fill my hulls with biological gasses that were formed from the "night before the race activities". These gases are lighter than air and makes my boats much lighter. The only glitch is that these gasses can be slightly flammable and a small spark could cause a rukus.

                Doug
                Doug Peterson
                IMPBA 19993
                www.badgerboaters.com

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                • properchopper
                  • Apr 2007
                  • 6968

                  #23
                  Originally posted by DPeterson
                  I fill my hulls with biological gasses that were formed from the "night before the race activities". These gases are lighter than air and makes my boats much lighter. The only glitch is that these gasses can be slightly flammable and a small spark could cause a rukus.

                  Doug
                  There's an "APP" for that

                  http://www.amazon.com/Gas-X-Extra-St.../dp/B000GZA7W0
                  2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
                  2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
                  '11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono

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                  • Doby
                    KANADA RULES!
                    • Apr 2007
                    • 7280

                    #24
                    Too much cheese.....
                    Grand River Marine Modellers
                    https://www.facebook.com/search/top/...ne%20modellers

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                    • DPeterson
                      Senior Member
                      • Apr 2007
                      • 842

                      #25
                      Doby
                      Too much cheese.....
                      No - I think it is the Canadian Beer I have been drinking.

                      Propper - there really is an APP for everything.

                      Doug
                      Doug Peterson
                      IMPBA 19993
                      www.badgerboaters.com

                      Comment

                      • Doby
                        KANADA RULES!
                        • Apr 2007
                        • 7280

                        #26
                        As the OP seems to have abandoned the proverbial ship on this topic.....

                        Peterson, If you want some real beer next year, let me know..
                        Grand River Marine Modellers
                        https://www.facebook.com/search/top/...ne%20modellers

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                        • properchopper
                          • Apr 2007
                          • 6968

                          #27
                          Originally posted by Doby
                          As the OP seems to have abandoned the proverbial ship on this topic.....

                          Peterson, If you want some real beer next year, let me know..
                          Caution is advised ; Doug gets real "interesting" when he drinks beer : http://www.youtube.com/watch?v=b4-HYY_qkGc
                          2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
                          2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
                          '11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono

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                          • kevinpratt823
                            Fast Electric Addict!
                            • Aug 2012
                            • 1361

                            #28
                            Originally posted by siberianhusky
                            Nope, been doing it the same way for years, hatch locks just another place to leak, good ol hockey shin pad tape, nobody I run with uses anything in most boats, one buddy does have one bolt and blind nut holding down the lid of his rigger, tape still seals out the water.
                            SAM_0090.jpg
                            If you use the right size, a simple shock O-ring below the spring seals a hatch lock right up. 3 of my boats, Cyberstorm, Sniper 45", and my DF Explorer Cat I just sold, have hatch locks/o-rings, and some foam rubber tape(for windows) run around the hatch area of the hull. All have been repeatedly submarined, submerged, and sat upside down for 10-15 min before retrieval without much more than a shot glass of water inside. My whiplash, which relies entirely on tape to hold the hatch takes on more water than any of these boats when it has a blow over. I think it's partly because the sudden pressure in the hull caused by slamming the surface breaks the seal of the tape, where the hatch locks relieve that pressure, but keep the seal after. For me, if the design of the hatch allows, this is better than tape(and WAY easier), and these boats have been through the ringer pretty hard.
                            Last edited by kevinpratt823; 09-06-2013, 07:45 PM.
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                            • Bduncan
                              Senior Member
                              • Jan 2013
                              • 296

                              #29
                              Those of you who replied privately in good form please disregard). In response to the last few comments and the nasty inappropiate personal messages I can't help but l offer the following. I pitty your Colleagues, friends, children etc... It would appear the Socratic method or thought provoking comments and or suggestions are outside of your repertoire. If you take the time to be so myopic and negative on a hobby forum, I can only imagine how you interact with people in the real world. Was my post extremely well thought out as if i were a hydrodynamic engineer or physics professor, No. Go ahead and tell everyone you associate with how stupid they are and how useless there thoughts are. It will get you very far in life.

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                              • Cooper
                                Fast Electric Addict!
                                • Jan 2011
                                • 1141

                                #30
                                Originally posted by Bduncan
                                Those of you who replied privately in good form please disregard). In response to the last few comments and the nasty inappropiate personal messages I can't help but l offer the following. I pitty your Colleagues, friends, children etc... It would appear the Socratic method or thought provoking comments and or suggestions are outside of your repertoire. If you take the time to be so myopic and negative on a hobby forum, I can only imagine how you interact with people in the real world. Was my post extremely well thought out as if i were aa hydrodynamic engineer or physics professor, No. Go ahead and tell everyone you associate with how stupid they are and how useless there thoughts are. It will get you very far in life.

                                Wow, really? I must have missed something, some private chat perhaps?

                                Well only thing I can think of in reply to that is my bumper sticker----- my kid beat up your honor roll kid!!!



                                Lol!!!!!!!

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