oh...oh...got a more serious problem

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  • JimClark
    Fast Electric Addict!
    • Apr 2007
    • 5902

    #16
    Is it possible that there isn't cloth (or very little) in the air dam protrusion? it must be extremely hard to get cloth into the molds even in vacuum bagging it.

    Jim
    "Our society strives to avoid any possibility of offending anyone except God.
    Billy Graham

    Comment

    • AndyKunz
      Fast Electric Addict!
      • Sep 2008
      • 1438

      #17
      Originally posted by egneg
      Will 30 min epoxy work as well as I haven't found 2 hour epoxy.
      I like to use 2 hour because it gives lots of working time and you want it to flow freely down into the gap and seal things up well.

      You could try 30 minute and let us know.

      Andy
      Spektrum Development Team

      Comment

      • Capt. Crash
        Senior Member
        • Jan 2009
        • 301

        #18
        Originally posted by JimClark
        Is it possible that there isn't cloth (or very little) in the air dam protrusion? it must be extremely hard to get cloth into the molds even in vacuum bagging it.

        Jim
        That is what I suggested on this post after the sponson sagged when I touched it and it was not that hot.

        http://forums.offshoreelectrics.com/...ead.php?t=6221

        Now with this crack too it makes me start questioning this whole adventure. It's starting to look like my whole boat needs strengthening. How much bulkhead adding/upgrading and glue do I need to pour into this to keep it together?

        How much can I do to it before my warranty becomes void? How many holes can I put into it before it is unreturnable?

        A replacement hull with the stuffing tube already installed is starting to look better. and better...but it needs to be completely upgraded and be a lot better than this one or it's a waste of my time and patience.


        At this point I'm also considering the Proboat offering again...using the Miss Elam hull and everything else from this thing as a last resort. I really like this boat but I'm starting to lose my patience with it.

        Comment

        • SweetZ28
          Fast Electric Addict!
          • Apr 2007
          • 1322

          #19
          Originally posted by Grimracer
          You know what.. it looks like (depending on your batteries) that is close to the CG..

          Here is what i suspect..

          The boat lands in the water hundreds of time each run. it must be flexing from the weight + impact force at the CG.

          Im going to see what can be done about adding extra cloth in that area.

          WILD.. after 100s of runs on the development boats we never saw this... like taking a brick to the side of the head.. that one left a mark!

          Are we OK with this suspicion and suggestion guys?

          Grim
          Also Grim keep in mind it's cold out and the water is much colder than in the summer time ...so you guy's may have been testing in warm waters and cold makes stuff tend to crack much more easy and you guy's had no way of knowing this because i bet it wont happen in summer time when water temps are much warmer?... this is what i am thinking
          :p What go faster that's what I like to do!
          Custom RC radio steering grips
          WWW.PPRSLOTS.COM

          Comment

          • JimClark
            Fast Electric Addict!
            • Apr 2007
            • 5902

            #20
            I am not talking about the bottom only the small air trap just behind the sponson it would be next to impossible to get cloth down in the area where the crack has develpoed at the beginning of the thread

            Originally posted by Capt. Crash
            That is what I suggested on this post after the sponson sagged when I touched it and it was not that hot.

            http://forums.offshoreelectrics.com/...ead.php?t=6221

            Now with this crack too it makes me start questioning this whole adventure. It's starting to look like my whole boat needs strengthening. How much bulkhead adding/upgrading and glue do I need to pour into this to keep it together?

            How much can I do to it before my warranty becomes void? How many holes can I put into it before it is unreturnable?

            A replacement hull with the stuffing tube already installed is starting to look better. and better...but it needs to be completely upgraded and be a lot better than this one or it's a waste of my time and patience.


            At this point I'm also considering the Proboat offering again...using the Miss Elam hull and everything else from this thing as a last resort. I really like this boat but I'm starting to lose my patience with it.
            "Our society strives to avoid any possibility of offending anyone except God.
            Billy Graham

            Comment

            • Capt. Crash
              Senior Member
              • Jan 2009
              • 301

              #21
              My sponson bottom sagged...and the topside hull area just forward of the vertical fins seems very flexible too. I can press on it and it flexes...more so on the starboard side. It seems very thin there. Add to that Grims question about the possible need for more glass in the tub under the batteries....where does it end? I measured the surface temps @ 51 degrees. Air temp 40-50.

              Comment

              • JimClark
                Fast Electric Addict!
                • Apr 2007
                • 5902

                #22
                Dudes it is a race boat there are going to be areas that flex. If you made it rock solid with glass it would sink or at least not get up on a plane because of the weight
                "Our society strives to avoid any possibility of offending anyone except God.
                Billy Graham

                Comment

                • Capt. Crash
                  Senior Member
                  • Jan 2009
                  • 301

                  #23
                  Originally posted by JimClark
                  Dudes it is a race boat there are going to be areas that flex. If you made it rock solid with glass it would sink or at least not get up on a plane because of the weight
                  So you think a little epoxy down in that spot will fix it?

                  Comment

                  • JimClark
                    Fast Electric Addict!
                    • Apr 2007
                    • 5902

                    #24
                    flexing on the deck and some other areas is normal for a race boat. Now I don't have a UL-1 so maybe it is more flexing than I think but. The cracks are another issue.
                    Jim
                    "Our society strives to avoid any possibility of offending anyone except God.
                    Billy Graham

                    Comment

                    • JimClark
                      Fast Electric Addict!
                      • Apr 2007
                      • 5902

                      #25
                      Where is the motor mount in relation to the cracks that are developing?
                      Just a thought it might not be a bad idea to stiffen that area in the tub some but I would wait until I hear from Mike Z on this as I am sure he is right on top of this issue.

                      Jim
                      Originally posted by Capt. Crash
                      So you think a little epoxy down in that spot will fix it?
                      "Our society strives to avoid any possibility of offending anyone except God.
                      Billy Graham

                      Comment

                      • Steven Vaccaro
                        Administrator
                        • Apr 2007
                        • 8724

                        #26
                        Anyone see this. http://forums.offshoreelectrics.com/...ead.php?t=6308
                        Steven Vaccaro

                        Where Racing on a Budget is a Reality!

                        Comment

                        • planezero
                          Member
                          • May 2008
                          • 94

                          #27
                          Originally posted by Capt. Crash
                          It is only on the starboard side...so far. Let me know if i can be of further assistance.

                          Crash
                          Just checked my hull it has two cracks on the other side (where the fin is ) 5,5 and 6,5 cm from the point where you are measuring.
                          In my case its just the gel coating that has cracked. Not serious at all (yet ?).

                          For reference, I've only had about 8 runs on my boat, but the last one was a major crash at top speed with a fountain installation.

                          Comment

                          • Capt. Crash
                            Senior Member
                            • Jan 2009
                            • 301

                            #28
                            Originally posted by Steven Vaccaro
                            That may be the ticket...I don't want to keep adding weight to this thing try to fix the weak points.

                            I would like to ask some questions over there and registered last week but still have no posting rights. I can't figure out how to contact the admin. to see why I can't post. Would someone here send a heads up to him for me? I registered as Capt. Crash over there.

                            Thanks

                            Comment

                            • Grimracer
                              Senior Member
                              • Nov 2008
                              • 656

                              #29
                              under the batterys? What?

                              The batterys are in front of the CG...

                              O man...



                              Grim

                              Comment

                              • egneg
                                Fast Electric Addict!
                                • Feb 2008
                                • 4664

                                #30
                                Originally posted by Grimracer
                                under the batterys? What?

                                The batterys are in front of the CG...

                                O man...



                                Grim

                                No behind the sponson on the rail leading towards the back just like in the captains picture. It very well could be at the center of balance but I have taken everything out to make repairs so I can't check it.
                                IMPBA 20481S D-12

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