I am also a newbie and have been lurking on this group a month or two now and though I have had a Caveman hybrid for several months more I had not acquired any...
Greeting everyone, being new to the group, I saw one message asking if anyone launches their motor. After checking with our hosts, I upload a video to the...
Hi there, Excuse my ignorance, but as someone living in the UK, without an explosives licence, is it possible to light the MH without resorting to APCP starter...
Smurf, Reliable ignition of microhybrids is a continuing challenge for some of us. There are some ideas in the series of messages with the subject "Reliable...
Friday, November 14, 2003, 3:06:20 AM, Art Applewhite wrote: AA> I have had some success with igniters made from CAT 5 cable with a AA> thin copper bridge wire...
Dan, Thank you for the clarification. It's a wonder that Roger Bacon managed to invent gun powder. :) Art Applewhite www.artapplewhite.com ... charges ... ...
Friday, November 14, 2003, 2:57:28 PM, Art Applewhite wrote: AA> Thank you for the clarification. It's a wonder that Roger Bacon AA> managed to invent gun...
Here in the Netherlands I do have a licence to handle BP. and al sorts of other stuff you need a licence for. If it is legal to ship igniters to the UK may be...
For those of you within driving distance of Austin, Texas ... it looks as if you can fly if your micro hybrid meets the Tripoli requirements ... details should...
My understanding is that Tripoli EX rules allows MH's as long as you make your own fuel grains. No commercially made grains. Regards, Jim Robertson Roanoke, VA...
I made another static test a couple of days ago with my Caveman Microhybrid. It lit the first try, again using a Quick Burst Slim Gem. I tried my idea of using...
I found out to the is some differnece in the seal the cylinders come with. But in most cases the extra grease will do the trick and keep the gas in the...
hum that's pretty long for a MH. are you sure you didn't borrow one of the old Apollo boosters :-) The burst disk normally burn trough complete and it should...
I spoke on the phone with Ben Russell, the Tripoli Director of Research, several months ago and that is exactly what he said. You could use a "factory-made"...
I have tested mine three times so far, and it works great each time. I used a piercer from a pellit gun and cast epoxy kno3 mg/al mixture to hold the nitrous...
How much cleanup is required after a firing? ... From: "sheath65" <sheath65@...> To: <microhybrids@yahoogroups.com> Sent: Sunday, December 14, 2003 8:55...
Interesting idea. By eliminating a separate burst disc the piercer could actually be machined as part of the injection head eliminating a small and easily lost...
I used visco fuse to ignite two and nicrome cast in with a little 1F blackpowder on the other. As to the other fellows question on clean up I just use hot...
First, the Nox Cylinders are filled to 900 pounds, Does this mean that you cannot have a chamber pressure higher than that? Has anyone determined the best...
yes that does it mean.You can't get more pressure than there is in the cylinder. If you make the fuel grain shorter you will also get a smaller burning surface...
... I believe at room temp, the N20 cylinders are ~700 750 PSI. And yes, you have to run the Pc at less than the N20 supply pressure. 300 to 400 PSI is a...
Does this mean a longer fuel grain would be better? Would the performance improvement make up for the extra casing weight this would require? Art Applewhite ...
This self limiting behavior makes microhybrids less likely to CATO from over-pressure. This is a safety feature. Art Applewhite www.artapplewhite.com In a...
no a longer motor not but a bigger core in the grain will. bigger surface and less weight resulting in a better performing motor. Jan-Hein ... weight this ... ...
For a microhybrid, I suppose a 1/2" circular core would be the pratical limit to avoid burning through of the grain to the casing. A star shaped core might...
... Actually, a longer fuel grain is better than a bigger core diameter from an O/F standpoint. For a shorter grain, my theory is a smaller core diameter is...
... from ... There is nothing inherent in the micro hybrid design that makes it less prone to cato than any other hybrid rocket motor, IMO. If you get Pc over...
Actually, if the pressure in the combustion chamber increases past the pressure inside of the nitrous chamber, no nitrous will flow into the combustion...
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