Exhile
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Everything posted by Exhile
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Chapeau als je dat lukt, daarvoor heb je de allerbeste kwaliteit BP nodig en juiste ID's en cores n stuff. De meeste pyrotechneuten die erin slaagden gebruiken gewoon commercieel gekocht BP
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Hard aanrammen, persen is aangeraden, Als je nat perst krijg je een nozzle met scheuren die stukken minder stevig is
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Vergeet het maar om als noob maar iets deftig als payload naar boven te sturen, Je weet zelfs nog niet hoe je een deftige lont maakt!
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When you wetten the BP, some of the KNO3 will dissolve in the water and crystallize IN the C,when you press it, you will force more KNO3 molecules in the C molecule giving you even better quality blackpowder, ideal pressure for BP is 1.7gr/cc IIRC.
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CIA or precipation method, gives quiet good blackpowder, only drawback is the drying time, i allways mill everything together and then wetten it with a water acetone solution. You have to use the acetone to prevent the KNO3 from crystallising out on the sides of the composition
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Shellack is een binder in compositie's, ik weet niet uit wat het bestaat, eerst dacht ik uit een hars maar ik heb van iemand gehoord dat dit de vleugeltjes zijn van 1 of ander insect. Deze stof is verkrijgbaar bij drogisterijen.
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Excuse me, i wasn't logged in.
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Make a machine that makes the fuse for you!! I do that for blackmatch, a bobine of cotton string is lying in a bah with dissolved KNO3 in it, the string goes true a paste of blackpowder(i use a silicon tube)and comes out coated with blackpowder, i make about 5 meters in a minute
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You can work that out by using stoichiometrie, S also gives some gas as you said but it actually slows down the mix a bith, in case of blackpowder it eliminates the precipation of carbonate so the mix will burn slower.
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If you do that you will overfuel you're composition, sulfur has only one goal and that is to make the sas more sensitive(flahs more sensitive :shock: )
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Go to brainfever his site, bridgeless eletrical igniters, i make them to for firing aerial mortars and stuff, very reliable and easy to make, Blaf are you sure 1.5 Volts is enough? I use 12 volt over a distance from 20-30 meters
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Sure, if you pay me the send cost and the visco fuse, why would you need that VISCO if i might ask?
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Compositie's met suikers en andere koolwaterstofketens zullen altijd traag branden omdat ze eerst moeten ontbinden voor ze effectie reageren, voor snelle composities heb je C, Al of Mg nodig als reductor.
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Nope, weather
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Glad for you you haven't lighted one of those devices, tourbillions give loads of sparks, so does the tail of a rocket, I haven't fired anything here for the past week cause of the huge heat. I am waiting for the rain to come so i can start working again.
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At night on the beach, big open place and allmost no danger of fire?
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Ba(NO3)2 can be made by 2 easy ways(the ways that i use and know) First one: BaCO3+2HNO3--->Ba(NO3)2+H2CO3(the H2CO3 will most likely fall apart in H2O and CO2) Second way: BaCO3+2NH4NO3--->Ba(NO3)2+2NH3+H2CO3(watch out for ammonia vapours, the H2CO3 will most likely fall apart to) BaCO3 can be bought at several places, just search a lot for it
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Ba(NO3)2 isn't hard to find or make,if you want a flash core for the brightness of flash then i recommend you to use KNO3/Al/S flash(slow and quiet bright) EDIT; I am from Belgium
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Ja die is er maar de procedure is niet echt veilig, CaC2 kan je gewoon kopen in de betere tuinwinkels...
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Stable flash, Ba(NO3)2/Mg
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I am free friday afternoon, i'll do my stuff then to learn in the weekends, i think this rocket will lift about 50 grams of payload, not much but it's ok for such a small rocket
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Die ziet er een stuk beter uit, natuurlijk is deze reactie sterk vereenvoudigt en ontstaan er nog andere stoffen.
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Richard zijn post is niet juist, je mist een zuurstof atoom
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The rocket was in the experimental fase, maybe i'll try to take payloads up on friday(exams now) But i am quiet satisfied with the result now.