Caramanos2000 Posted March 29, 2007 Posted March 29, 2007 I have been trying to make rockets without pressing. I tried the 60/40 melted and put it in a 1/4" tube about 3" long. Nozzle was wall putty, it flew up about 1' and sideways about 50' bouncing allover the place. It was on a kibob stick. What other formulas or solution are there?
pudidotdk Posted March 29, 2007 Posted March 29, 2007 Try balancing the kebab stick on your finger. The balancing point should be behind the nozzle, but not too much.
deadman Posted March 29, 2007 Posted March 29, 2007 Try not caramelizing it. I don't have a huge experience with Rcandy, but when melted I do know it burns much slower. Since you are using a 1/4" ID rocket a faster propellant will work well. Try the recrystillization method or ramming it. 1% red iron oxide has proven to make a much quicker fuel as well. 6/4 has proven workable for many people, and I wouldn't worry too much about that, but experimenting is key. For a more stable flight try a little longer stick or add a flare at the end of the ones you are using.
Caramanos2000 Posted March 29, 2007 Author Posted March 29, 2007 So ram it without a press? Just put the kno3 and sugar and iron oxide in it? Should it be course or powdered?
pudidotdk Posted March 29, 2007 Posted March 29, 2007 Ramming is with a mallet or deadblow hammer, while pressing is with a press. If you have a press then use it, else just ram it. If you use it in powdered form it must be finely powdered and homogenous, else it might be too weak to lift a rocket from the ground. You'd have to ram it here. Recrystallize it (see jamesyawn.com how to recrystallize) and you don't have to ram, you can just press the soft material into the tube by hand and let it harden. This is much better than the powdered form.
Caramanos2000 Posted March 29, 2007 Author Posted March 29, 2007 Can I use my kitchen oven? Seems creepy to me. Also, dont I just slap the engine at the top of the kibob stick? Do I need a nozzle for the recrystalized stuff? As for initial heating I have an old stir fry like thing which is flat on the bottom.
FrankRizzo Posted March 29, 2007 Posted March 29, 2007 Can I use my kitchen oven? Seems creepy to me. WOAH there! You're asking if the *kitchen* oven is an appropriate place to manufacture a rocket propellant? What do you THINK genius?
pudidotdk Posted March 29, 2007 Posted March 29, 2007 I bought an electric toaster oven for ~7$ at a flee mart. It's compact and I can take it anywhere I want including the garage. James Yawn describes how to do it with toaster ovens too!
FrankRizzo Posted March 29, 2007 Posted March 29, 2007 The garage is only *slightly* better than the kitchen. If you don't have an acceptable place to manufacture, DON'T.
kwinchee Posted March 29, 2007 Posted March 29, 2007 Are thay coreless?? or core if thay have a core and you are melting the rcandy put a piece of dowel in there for the core Ive noticed it buggers up if you drill it
pudidotdk Posted March 29, 2007 Posted March 29, 2007 The garage is only *slightly* better than the kitchen. If you don't have an acceptable place to manufacture, DON'T. Depends whether your garage is your pyro shop or if it is for the car But yes doing it in the garage is not safe under normal circumstances, so doing it outside is good if anything should happen.
Caramanos2000 Posted March 30, 2007 Author Posted March 30, 2007 Lol I ask becuase thats what it looks like in his pic. Lol, I tried the whole mini toaster over from walgreens, quite a show too, lol a giant smoke bomb as it ignited. anyways I think I will try again.
deadman Posted March 30, 2007 Posted March 30, 2007 If it was a smoke bomb, that means you let it heat to fast. If it appears to be darkening let the heat down a bit. A nozzle and semi core is usually good for smaller rockets. If it blows, use a stronger tube, and a smaller core. If it flops make a deeper core.
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