http://groups.yahoo.com/group/microhybrids/ Microhybrids Mon, 09 Nov 2009 14:15:15 GMT Abu Bar-Fartootsi http://groups.yahoo.com/group/microhybrids/message/840 http://groups.yahoo.com/group/microhybrids/message/840 Nice layout, Ed.  A couple of discussion points:  1)  Not sure that the compression spring is strictly necessary.  I'm not aware of any larger monotube Mon, 09 Nov 2009 03:47:11 GMT Flash Gordon http://groups.yahoo.com/group/microhybrids/message/839 http://groups.yahoo.com/group/microhybrids/message/839 we have to come up with a fail-proof system... the paint ballers have done it. They use N2O in thier tanks and guns. Maybe figure a way to fill it in the Mon, 09 Nov 2009 01:49:53 GMT anotherbigwil http://groups.yahoo.com/group/microhybrids/message/838 http://groups.yahoo.com/group/microhybrids/message/838 Nice. I've had a similar idea, only using a simpler smaller valve system and filling directly off a push valve style charger (still sad they are gone). The Sun, 08 Nov 2009 15:32:46 GMT Flash Gordon http://groups.yahoo.com/group/microhybrids/message/837 http://groups.yahoo.com/group/microhybrids/message/837 I up-loaded a concept drawing for a micro with an internal tank. See what you think. Ed Thu, 05 Nov 2009 20:13:27 GMT fraserneville http://groups.yahoo.com/group/microhybrids/message/836 http://groups.yahoo.com/group/microhybrids/message/836 ... It is all about explosive potential. Actually, a lot of Australian law works on two principles: 1. You can make the device, but you cant get the stuff to Thu, 05 Nov 2009 16:38:07 GMT Abu Bar-Fartootsi http://groups.yahoo.com/group/microhybrids/message/835 http://groups.yahoo.com/group/microhybrids/message/835 Bob Steinke just recently reported to the arocket list on an HTP/paraffin hybrid test.  Here's a link with a video: http://speedupworld.com/news_10_21_09.html Thu, 05 Nov 2009 01:53:38 GMT Robert Richer http://groups.yahoo.com/group/microhybrids/message/834 http://groups.yahoo.com/group/microhybrids/message/834 There was a fellow in Amarillo who recommended simple gray duct tape. I believe it was just a few wraps around the ignitor/powder ball. His theory was that Thu, 05 Nov 2009 01:32:37 GMT Steve Colbourne http://groups.yahoo.com/group/microhybrids/message/833 http://groups.yahoo.com/group/microhybrids/message/833 Keeping a bucket of water handy to quickly wash of the H2O2 is wise and always wear safety goggles when handling the stuff. I heard the accident mentioned was Thu, 05 Nov 2009 00:33:39 GMT Matthew Ornawka http://groups.yahoo.com/group/microhybrids/message/832 http://groups.yahoo.com/group/microhybrids/message/832 I used to use both 50% hydrogen peroxide and 70% hydrogen peroxide when I worked making printed circuit boards... trust me, you do NOT want to get this stuff Wed, 04 Nov 2009 18:11:15 GMT Ray R http://groups.yahoo.com/group/microhybrids/message/831 http://groups.yahoo.com/group/microhybrids/message/831 ... I wasn't aware of this. Perhaps you are thinking of Robert Compton, who died from burns in his house fire. Robert was turning cast Zn-S propellant in the Wed, 04 Nov 2009 14:30:55 GMT mike http://groups.yahoo.com/group/microhybrids/message/830 http://groups.yahoo.com/group/microhybrids/message/830 On Tue, Nov 3, 2009 at 10:21 PM, Robert Richer ... HMS Excalibur and Explorer were HOOH turbine powered. So many problems, nicknamed HMS Excruciator and HMS Wed, 04 Nov 2009 03:21:16 GMT Robert Richer http://groups.yahoo.com/group/microhybrids/message/829 http://groups.yahoo.com/group/microhybrids/message/829 I saw a story a couple of years back about a (British ?) submarine explosion a decade or two earlier. It seems that when Hydrogen peroxide contacts the 'wrong' Wed, 04 Nov 2009 02:36:13 GMT artupton http://groups.yahoo.com/group/microhybrids/message/828 http://groups.yahoo.com/group/microhybrids/message/828 ... I do know that the peroxide guru of the RRS died in one of his tests of H202 liquid rockets. You know it eats the flesh off your bones right? The German Wed, 04 Nov 2009 02:28:54 GMT Steve Colbourne http://groups.yahoo.com/group/microhybrids/message/827 http://groups.yahoo.com/group/microhybrids/message/827 The new lands speed record attempt is using a hydrogen peroxide hybrid with a solid fuel. Has anyone managed to get this to work for model rockets. I have seen Tue, 03 Nov 2009 17:40:46 GMT artupton http://groups.yahoo.com/group/microhybrids/message/826 http://groups.yahoo.com/group/microhybrids/message/826 ... Thanks, Exactly ;) I worry that because these are small I see folks treating them in a smaller risk way. I think I have beat the pour horse dead now and I