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#1
10-13-2011, 12:40 PM
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Not gyro related...Need some suggetions regarding project..
Hey guys, I have a project I am working on that will require a hollow tube to act as a crucible for a period of 10 to 15 seconds only. It is disposable and looks are of no concern. Problem is it needs to contain a thermitic reaction which can reach temps of 5000 degrees, but only for a few seconds.
I tried glass and ceramic, but they shattered from the temp shift. Someone suggested looking at graphite and I am awaiting a call from a company even now. So any ideas? I have been using a piece of thick 5/16 pipe which has survived remarkably well, but the weight is a major drawback. Price isn't a main concern, but the lower the cost the more the profit! So any ideas? Ben S
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Heavy P.E.T.N. leads to smokin holes! N388HS 
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#2
10-13-2011, 12:46 PM
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My pulsejet calls for stainless. The combustion chamber gets red hot and I think it's only a few thousand degrees. I have some graphite laying around. I don't remember if it's tube or rod....want a piece? EDIT: It's a 1/4 inch rod.
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President of PRA Chapter 73 PRA# 42165 Sport Copter's Website  Sport Copter's Facebook http://www.pra73.net PRA73 Facebook Last edited by Master Roda; 10-13-2011 at 12:51 PM.
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#3
10-13-2011, 01:24 PM
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AH HA!! I found my graphite crucibles. You want one? They are a little used from my last experiment, but I'm sure they can be cleaned out.
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President of PRA Chapter 73 PRA# 42165 Sport Copter's Website Sport Copter's Facebook http://www.pra73.net PRA73 Facebook
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#4
10-13-2011, 02:16 PM
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Graphite was going to my suggestion .
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#5
10-13-2011, 02:50 PM
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I not sure if Ben remembers the converstion we had about this
 Hey Ben!! This thing is only 3.5 inches long and 1.5 inches inside diameter,1/4 wall. If that's good enough I'll ship it to you. Actually, I have two of them for you. They are crucibles, but the bottoms are sure to come off after what I did to them so it will be a tube I made an aluminum alloy that dissociates hydrogen from water. Too messy and expensive. Smelled bad too. You have my number.....
__________________
President of PRA Chapter 73 PRA# 42165 Sport Copter's Website Sport Copter's Facebook http://www.pra73.net PRA73 Facebook
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#7
10-13-2011, 04:15 PM
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Are snowboards in season?
Taste like chicken!
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#8
10-13-2011, 04:59 PM
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Almost snowbird season, annd I don't know what they taste like. Never had one.
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#9
10-13-2011, 06:47 PM
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I wish I was a snowbird. Seems like a better life than a snowboard.
__________________
President of PRA Chapter 73 PRA# 42165 Sport Copter's Website Sport Copter's Facebook http://www.pra73.net PRA73 Facebook
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