http://groups.yahoo.com/group/water-rockets/ Water Rockets Mon, 09 Nov 2009 20:03:23 GMT Mike Passerotti http://groups.yahoo.com/group/water-rockets/message/10130 http://groups.yahoo.com/group/water-rockets/message/10130 I believe the only way to optimize the microbubble is to make the bubbles in the rocket while under pressure. Sounds difficult. But, if it could be done, Mon, 09 Nov 2009 16:41:38 GMT Jim Fackert http://groups.yahoo.com/group/water-rockets/message/10129 http://groups.yahoo.com/group/water-rockets/message/10129 Do the bubbles recover when the pressure is slowly relieved? I bet so. When you replace the water in a water rocket with bubbles, you are replacing an Mon, 09 Nov 2009 15:12:19 GMT Ralph Oborn http://groups.yahoo.com/group/water-rockets/message/10128 http://groups.yahoo.com/group/water-rockets/message/10128 The solvent is ( maybe ) trichloroethylene. Whatever; it evaporates very fast and is a better grease cleaner. Hey folks I do environmental cleanups for the Mon, 09 Nov 2009 11:08:46 GMT George http://groups.yahoo.com/group/water-rockets/message/10127 http://groups.yahoo.com/group/water-rockets/message/10127 Hello Bruce, Good to hear that you have had some good success with your PU glue in sticking to PET. That is usually half the battle. As far as sticking to the Mon, 09 Nov 2009 11:03:41 GMT Kevin http://groups.yahoo.com/group/water-rockets/message/10126 http://groups.yahoo.com/group/water-rockets/message/10126 Has anyone considered an intermediate pressure vessel containing the high concentration soap solution where the vessel exits to the rocket via the launcher, Mon, 09 Nov 2009 10:43:23 GMT escapehatch@... http://groups.yahoo.com/group/water-rockets/message/10125 http://groups.yahoo.com/group/water-rockets/message/10125 Hello George, I havnt had a chance to look for PL or Sikkaflex, but I tried making use of some polyurethane wood-glue I've had kicking around for years. I also Mon, 09 Nov 2009 07:22:00 GMT George http://groups.yahoo.com/group/water-rockets/message/10124 http://groups.yahoo.com/group/water-rockets/message/10124 Hi Mike, Nice diagram of the mixing apparatus. At first I thought that the dremmel tool might have a hard time overcoming the frictional forces of the air Mon, 09 Nov 2009 07:08:42 GMT George http://groups.yahoo.com/group/water-rockets/message/10123 http://groups.yahoo.com/group/water-rockets/message/10123 I know exactly what you mean Todd. I once experimented with shaving cream since it produces a high density foam. I emptied almost the whole can into a bottle Fri, 06 Nov 2009 15:05:15 GMT Clifford Heath http://groups.yahoo.com/group/water-rockets/message/10122 http://groups.yahoo.com/group/water-rockets/message/10122 ... The same percentage of the air will dissolve given enough time. Microbubbles have more internal surface area so will reach a state of equilibrium on the Fri, 06 Nov 2009 13:18:11 GMT Mike Passerotti http://groups.yahoo.com/group/water-rockets/message/10121 http://groups.yahoo.com/group/water-rockets/message/10121 Thanks for that Todd, Forgot about that. Easiest way to pop a bubble is to change the pressure. So far as I can tell, pressurized foam making is going to be Fri, 06 Nov 2009 12:12:36 GMT Todd http://groups.yahoo.com/group/water-rockets/message/10120 http://groups.yahoo.com/group/water-rockets/message/10120 Hi everyone, I thought I might just add to this interesting discussion. I have seen before that bubbles that are created prior to pressurization seem to Fri, 06 Nov 2009 10:34:28 GMT Clifford Heath http://groups.yahoo.com/group/water-rockets/message/10119 http://groups.yahoo.com/group/water-rockets/message/10119 ... In my experience, there's no need for such stories. Just tell them you're developing a widget that you hope will attract interest from a local producer, Fri, 06 Nov 2009 09:06:33 GMT escapehatch@... http://groups.yahoo.com/group/water-rockets/message/10118 http://groups.yahoo.com/group/water-rockets/message/10118 OK George, I'm going to look for PL and Sikkaflex, but I have some other polyurethane adhesive ( supposed to be for wood ) I've used it before for wood; it was Fri, 06 Nov 2009 08:53:40 GMT escapehatch@... http://groups.yahoo.com/group/water-rockets/message/10117 http://groups.yahoo.com/group/water-rockets/message/10117 Hi, Yes, I think I have the name thingy sorted now. I think I did actually manage to scrounge a free sample from Freescale. I'll let you know if it actually Fri, 06 Nov 2009 08:08:55 GMT irwandi putra http://groups.yahoo.com/group/water-rockets/message/10116 http://groups.yahoo.com/group/water-rockets/message/10116 dear all   any one can help me to inform about water rocket competion..? when.. where, and how to registerd that event,,?   thank you.   wawan