In recent days I have treaty making based on nitrocellulose of blue llama, free (AP), I have added copper oxide, copper sulfate, but no colour, if someone knows thank the contribution.
When casting a cored r candy motor, is there a basic formula to determine core diameter. I believe core should be 1/3rd of the I/D of the grain / motor? Correct? So if I was to cast my regular weekend blazer ( simple 400mm X 45mm nozzle-less ) I can figure out core diameter no problem, but is the a maximum allowable limit to how far into the motor, ie how close to the head to drive my coring rod? I core till I'm about 30mm from the end of the motor tube. Lastly, and a bit off tangent, I kno
I will start this off with the basic things about the SCP Foundation, there are theres a good handfull of things to the SCP universe. SCP is supossebly a 'Fictional' orginazation of the paranormal and dangerous Anomolies. Some SCP's are interesting A LOT of them can easily kill a man, and some are just plain... creepy? o.o. I can give some examples on what Creepy SCP's are and all. Just ask away from a number between 1 to 2,999.
Homegrown Oxidizers Part Nine WSM The Experimental Cells The lead dioxide cell with the anode sandwiched between two cathodes. On the left side of the photo above, a close fitting PVC assembly is shown which is used mainly to protect the Pyrex tank we used. It also added an insulating layer, which wasn’t our intention or particularly wanted. In the lid of the cell are four fittings: two for the electrodes, one for a Teflon coated thermal sensor and the last one to vent gasses generated
Homegrown Oxidizers Part Eight WSM As a proof-of-concept demonstration of the conversion of sodium chlorate to sodium perchlorate, we will set up some trial cells. Sodium chlorate is much more soluble than potassium chlorate, so our starting electrolyte concentration will be about 600 grams per liter of water (600g NaClO3/L H2O) or about 5 pounds per gallon. Higher concentration electrolytes are easier on the electrodes during the electrolysis process. To show proof of the presence of perchl
Homegrown Oxidizers Part Seven WSM The Holy Grail… Making Perchlorates We’ve primarily made potassium chlorate during our efforts so far. What about pushing forward and making, the more often used and useful, potassium perchlorate? Anodes and Other Differences from the Chlorate Process To make chlorates we used specific anodes which optimize the production of the ClO3- (chlorate) ion. Will those anodes also make perchlorates? Many have theorized they will but in practice this has not pro
Homegrown Oxidizers Part Six WSM The Continuous System in Practice The potassium chlorate batch systems previously discussed are simple compared to a continuous system. To run a chlorate system on a continuous basis involves a great deal of attention to myriad details (many of which can be ignored in batch systems), and to omit any one of them invites headaches and an inefficient system. Where, in batch systems it’s nice to track various conditions in the cell, in continuous systems, it’s
Homegrown Oxidizers, Part Five WSM Is that all there is? We’ve built and run single batch cells and even set them up to run fairly consistently. We’ve improved efficiency by controlling the pH to where we approach the “sweet spot” of ideal precursors to get more chlorate for the current consumed. But the big question is, “Can we run a system continuously the way industry does?” The short answer is, yes! The Continuous System Theory System Design Because of the complex steps and details
Homegrown Oxidizers Part Four WSM A fellow enthusiast has offered this method: When is a batch finished? For maximum anode life, one should end a batch run when the potassium chloride concentration drops to about 10% by weight. Without expensive analytical equipment the easiest way to infer the concentration is by measuring the specific gravity, which falls as the chloride is converted to the chlorate that largely drops out of solution. This can be done by carefully weighing a known volum
Homegrown Oxidizers Part Three WSM The Power Supply Our power supply (5Vdc, 30A) The name plate, showing the input and output power Since the power supply has a voltage adjust trimmer, we can adjust the output voltage slightly above or below the 5V rating. To save energy we adjust it downward as the cell needs less than 4 volts to operate. Since this supply has multiple positive and negative output terminals, combining the positive wires to the anode and likewise the negative wires to t
Homegrown Oxidizers Part Two WSM The Anode A key to modern chlorate production is the MMO anode. These were hard to come by many years ago, but now are so common that surplus material can be had at reasonable cost through careful searching. Part of the success of these MMO anodes is due to their large surface area (on a microscopic scale). The typical process of manufacture involves multiple coating and baking cycles that leave the microscopic surface looking like the cracked mud of a dry
Homegrown Oxidizers Part One WSM Not all of us live in an area friendly to fireworks. Access to these articles of celebration, let alone the materials to produce them may be extremely limited if not completely banned. Reliable information to produce fireworks raw materials is very difficult to find and even consulting professional chemists usually yields little useful information (unless they happen to work in the chlor-alkali industry). In these articles we’ll try to describe some workable
What is a bombette in the first place? Simply a tube shot from a small mortar, like we see in commercial cakes linked together to shoot 12, 19, 30 shots one after one. Each shot tube contains a slightly smaller tube containing a clay plug holding the delay fuse, stars and flash burst. When they are fired we see a colored rising tail. Red, green, gold, glitter, silver... followed with whatever is inside the bombette. Making this tail is rather simple, but not obvious. NOTE: this blog only consi
Different Kinds of Mortar Tubes There are many different types of mortar tubes that are used to shoot off fireworks. Hdpe, steel, fiberglass, and cardboard are some that are most commonly used. Each of them is very different from each other, and they each have different uses. When firing aerial shells, you want to be very careful. Don’t stick anything over the tube when you are reloading another shell or lighting one. When you have shot one shell, let the tube cool off, an
I've been working off of a supply of real black powder and using the one ounce per pound formula for decent altitude. I'm going to run out of the real stuff soon, and am testing my black powder quality and production process to see what adjustments need to be made to get my shells into the air. One thought was to have a two stage boost, one to get the shell moving and the other to go off a millisecond later while the shell is still in the tube. I saw a video where the sound seemed to have a t
Hi all, Here is a 3 lb rocket with Ti tail, the 4 " cylinder has 3/4 " glitter comets and timed reports( the timing was not great) I also put a bottom shot on that must have had a seal problem, because it burst during the shell burst( you can see it in slow motion view, and hear it in the video as almost a double burst.) overall , home made tooling with a short spindle, 6 ", nice lift, nice tail, good break , good umbrella effect with the glitter. The glitter was a bit course so the flashes a
Hi, As a beginner first batch of chemicals has arrived. I will keep updating the blog as and when things arrive and i make something. 1. Salt peter 2. Barium Nitrate 3. Strontium nitrate 4. Bentonite powder. Now, waiting for Sulphur, Charcoal (airfloat and 80 mesh), Titanium powder, Acetone, Ethanol, Shellac. Still, struggling to get Aluminium. Any other chemicals i require? I want to stay away from chlorates and perchlorates at the moment. Enquiring about a H type hydraulic press.
Wanted to test a 1 # rocket for lifting 3" cylinders, loaded this one with a 330 g "flour " payload ( soon to be used as air float flour in glue that I want to try) Put a Ti tail on it and a tiny break of 3 washed out blue stars I'm trying to get rid of. She jumped out of the tube, straight and sweet ! delay charge was a touch long with break just after the apex. This is homemade tooling, with a 5 " spindle, tube was 7 ", with 1.5 inches of Ti mix above the spindle. Total fuel was 46 g,
After years of loving consumer mortar lift shells, I just started this hobby in January. I definitely love the mortar lifts, but have found that I am really liking rockets for lift, I am amazed by the lift power from a small motor. Tonight with a 1/2 inch rocket, I pushed a 102 gram 3 inch ball with 2 ( 14 g) sticks attached, total weight 130g. A 4 oz rocket lifting just a tad over 4 oz counting the sticks. The Firefly Stars were dextrin / water bound and cut to 3/8 + using the "zip l
Hi all, I have been collecting Indian fireworks labels and stuff for the last 4 years now. The inspiration came after i visited an online pyro museum. Indian fireworks are very old and there are a lot of companies. Few of them have been there for decades and few just mushroom up and never see the next season. The reason may be financial or cancelling of licence due to safety reason. http://www.youtube.com/watch?v=WvdEffMwMLo
All are 3 inch shells we fired for a marriage celebration, It was manual firing.
This flare is manufactured in Jaipur state of India http://www.youtube.com/watch?v=nv8iSnXaoxc
