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New launch of beautiful r-candy rockets with 6 inch shells.


MinamotoKobayashi

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New artillery ready to be launched:

32878460707_7233d458ee_h.jpg

 

Here are some videos:

 

6 Inch Shell Double Petalled Turquoise Plus Kamuro Plus Strobe:
6 Inch Shell Golden Glitters With Blue Stars:
6 Inch Shell Green Fade Red Plus Strobe:
6 Inch Shell Green Fade Red Plus Strobe:
6 Inch Shell Kamuro With Strobe:
.. and as a bonus, a scary 5" shell CATO:
Edited by MinamotoKobayashi
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Truly magnificent! Didnt know RCandy could be powerful enough to carry such large shells. You should be proud.
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good job, I see that your rockets do not reach enough height and the explosions reach the ground.
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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?

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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 cap

with a consequent premature shell ignition :P .

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 the

altitude ignition), while I will shorten the rockets for the 5" shells for about 1 cm.

 

Ciao Sulphurstan :D

Edited by MinamotoKobayashi
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Very nice symmetrical breaks, beautiful tails. Did you use aluminum tubes for all motors, event for two shorter ones with 4" shell?

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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.

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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

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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 ..

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Very good looking shells! What was the formula for the kamuro you used?

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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.....)
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For Kamuro I used the Jopete's formula:

 

0.29 Potassium nitrate
0.05 Sulfur
0.41 Pine charcoal
0.12 Titanium, 0-250 micron (60 mesh and finer), which will determine the density of the sparks
0.07 Dextrin
(I replaced the pine charcoal with coconut charcoal for long lasting sparks).
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  • 8 months later...
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
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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

r-candy.

 

Nice rockets as always!

Edited by Aspirina
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Guest PyroManiac1

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

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