MinamotoKobayashi Posted May 11, 2019 Posted May 11, 2019 (edited) New artillery ready to be launched: Here are some videos: 6 Inch Shell Double Petalled Turquoise Plus Kamuro Plus Strobe:https://youtu.be/y4QVa720zP0 6 Inch Shell Golden Glitters With Blue Stars:https://youtu.be/VChIO3CKucw 6 Inch Shell Green Fade Red Plus Strobe:https://youtu.be/QiuNxlqKQPg 6 Inch Shell Green Fade Red Plus Strobe:https://youtu.be/g5ZVRceqLvw 6 Inch Shell Kamuro With Strobe:https://youtu.be/Uq27dZ-ypak .. and as a bonus, a scary 5" shell CATO:https://youtu.be/H6OD9TIhp6o Edited May 11, 2019 by MinamotoKobayashi 3
Merlin Posted May 11, 2019 Posted May 11, 2019 Truly magnificent! Didnt know RCandy could be powerful enough to carry such large shells. You should be proud. 1
JOPETES Posted May 11, 2019 Posted May 11, 2019 Bonitas carcasas en especial glitter a azul, buena simetría. 1
Blackmach Posted May 11, 2019 Posted May 11, 2019 good job, I see that your rockets do not reach enough height and the explosions reach the ground.
Sulphurstan Posted May 12, 2019 Posted May 12, 2019 Buongiorno Minamoto.Amazing building, Amazing tails, Amazing Breaks! Regarding the Cato, did you figure out what the cause was? The shell also went off, right?
MinamotoKobayashi Posted May 12, 2019 Author Posted May 12, 2019 (edited) Hello.Thanks to all the users for the kindly words. Yes, the CATO happens because I did an hole in the compound too small (or too deep), so the internal pressure reached was enough to uncork the capwith a consequent premature shell ignition .While for the 6" shells I used a conservative setting rockets, for the 5" shell I used a propellant setting pushed to the very limit.Now I try to boost a little bit the rockets for the 6" shells (I add 1 cm extra of propellant, or increase the packing pressure from 7000 PSI to 8000 PSI, to increase thealtitude ignition), while I will shorten the rockets for the 5" shells for about 1 cm. Ciao Sulphurstan Edited May 12, 2019 by MinamotoKobayashi
Zmuro Posted May 13, 2019 Posted May 13, 2019 Very nice symmetrical breaks, beautiful tails. Did you use aluminum tubes for all motors, event for two shorter ones with 4" shell?
MinamotoKobayashi Posted May 13, 2019 Author Posted May 13, 2019 Hi Zmuro.Nope, for the 4" and 5" shells I use traditional waxed parallel wound cardboard tubes bought from Pyrogarage because I do not need excessive rocket lenght.
Arthur Posted May 14, 2019 Posted May 14, 2019 Is there some reason why you use a rocket where a lift charge would make an easy shell with no falling debris, and no falling stick to find later? The shells are glorious, nicely designed and well built
MinamotoKobayashi Posted May 14, 2019 Author Posted May 14, 2019 Yes, I love the rockets, the departure sound and the tail. Much more scenic Besides this, my shells do not have always the same exact diameter, so there could be big issues with mortar ..
Gerben Posted May 14, 2019 Posted May 14, 2019 Very good looking shells! What was the formula for the kamuro you used?
Sulphurstan Posted May 14, 2019 Posted May 14, 2019 Very good looking shells! What was the formula for the kamuro you used?Yes, this kamuro is great, my first and only kamuro stars were disastrous (probably the charcoal.....)
MinamotoKobayashi Posted May 15, 2019 Author Posted May 15, 2019 For Kamuro I used the Jopete's formula: 0.29 Potassium nitrate0.05 Sulfur0.41 Pine charcoal0.12 Titanium, 0-250 micron (60 mesh and finer), which will determine the density of the sparks0.07 Dextrin (I replaced the pine charcoal with coconut charcoal for long lasting sparks).
VMT93zzz Posted January 19, 2020 Posted January 19, 2020 I really like rockets, the things I create are very limited, the altitude and the load are weak. Are you willing to share the size of the rocket and the fuel you use. thank you very much
Aspirina Posted January 19, 2020 Posted January 19, 2020 (edited) I really like rockets, the things I create are very limited, the altitude and the load are weak. Are you willing to share the size of the rocket and the fuel you use. thank you very muchr-candy. Nice rockets as always! Edited January 19, 2020 by Aspirina
Guest PyroManiac1 Posted January 19, 2020 Posted January 19, 2020 Which r-candy composition do you use? Dry rammed 65% KNo3 & 35% Sugar Melted Together 65% KNo3, 34% Sugar & 1% Iron Oxide Melted Together 74.5% KNo3, 25.5% Sugar
MinamotoKobayashi Posted January 21, 2020 Author Posted January 21, 2020 HI.Usually I use my own procedure described here: https://www.amateurpyro.com/forums/topic/13028-how-to-make-hot-granulated-r-candy-mix/ And these are two tutorials that explains how to make r-candy rockets suitables for 5" and 6" shells: https://www.amateurpyro.com/forums/topic/13154-making-very-performant-nozzleless-r-candy-rockets-with-my-granulated-mix/https://www.amateurpyro.com/forums/topic/13292-making-a-granulated-r-candy-powered-aluminum-rocket-tube-for-6-shells/
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