What are these called

[displayfireworks1]

This video is from Spain. At 35 seconds into this video, you will see people walking down the street throwing firecrackers onto the ground. They look like what we call torpedo firecrackers here in United States. Does someone know the name for these in Spain?
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Este video es de España. A los 35 segundos de este video, verás a gente caminando por la calle tirando petardos en el suelo. Se parecen a lo que llamamos petardos torpedo aquí en los Estados Unidos. ¿Alguien sabe el nombre de estos en España?

http://www.youtube.com/watch?v=SSw3pxFVGZw

[jamietje]

Tro de Bac its called.
Lots of dutch people go to this festival for the fireworks.

[displayfireworks1]

Thank you, now that I know what they are called we can now expand our knowledge. Look at the video I found.

http://www.youtube.com/watch?v=pNIkN6DMyzY

[PyroManiacs]

sheesh, looks like such a tedious process, but very cool none the less.

[smilli]

A very unsual peace of fireworks, spain is trying to ban it's use.
Only the company Ricasa was aloud to produce the tro de bac for the desperta as start of the Fallas festival.
The desperta is held every year at the dia de la crida(beginning of Fallas) you see the group of people crossing the streets of Valencia throwing the tro de bac accompanied by live music to wake the city up.
They end at Plaza del Ayuntamiento for the macro mascleta(super mascleta)

They are not for sale for consumers in spain and are only produced in small numbers for this typical event.
I've witnessed some of these in person and they are incredibly loud!

[PyroManiacs]

What is the composition of these?

[smilli]

What is the composition of these?

In not sure because Ricasa does not give away it's forumulas, this is what we think: amstrongmix (unstable) potassium chlorate, sulfur and / or phosphorus

Ricasa just told the press they stopped producing the tro de bac, Pirotecnia Zarzoso will produce them from now on.
4000 boxes of these for 1500 participants are made for the dia de la crida this year.

[displayfireworks1]

This does not look like an Armstrong’s mix to me. That has more of a black powder look to it. If you notice the people in the parade throwing the torpedo’s to the ground they are all doing it with great force. I have a feeling if you do not throw these to the ground forcefully they will not explode. There is one thing I would venture to say the mixture will have potassium chlorate and sulfur in it, where it goes from there I do no know.

[smilli]

That could be so Dave my knowledge of powders and chems is pretty low,i copied the possible mixture of a dutch forum.
U do have to throw them with force like u have noticed, happens very often that they don't detonate.
Also the reasen why there are always participants of the desperta carrying some kind of metal cane with a flat top at the end pushing on the tro de bac that did not go off yet to cause them to explode.
The orginisation of the desperta is hold responsibly for any mishappens so they need to be sure al the tro de bac are fired off properly.

[RunBang]

You're totally right. This is Ag2C2.AgNO3 (Silver Acétylide) ;-)))
Tro de bac are very famous in Valencia. But only use at the begining and given by autorities, after it's prohibited because their sensitivity ;-)


http://www.youtube.com/watch?v=MbmAfFiEZD0

[displayfireworks1]

I really like those; I have never seen these in United States. Here are some great pictures of what they look like.
http://www.vivelasfallas.es/sites/default/files/imagecache/node-gallery-display/imagenes/story/Tro_de_Bac_0.jpg
http://www.midiariodeviajes.es/wp-content/uploads/2013/03/tro-de-bac-550x366.jpg
http://img266.imageshack.us/img266/5949/ciclista2.jpg
http://www.vivelasfallas.es/sites/default/files/imagecache/node-gallery-display/imagenes/story/sandra-mu%C3%B1oz-macro-desperta_0.jpg
http://www.fallasvalencia.es/files/imagecache/foto_articulo_original/tro_1.jpg
http://www.fallasvalencia.es/files/imagecache/foto_articulo_original/petardos_1.jpg

[RunBang]

Here you have a very old box of TRO DE BAC (from 50's) at 1:40 in a little Spanish fireworks museum!


http://www.youtube.com/watch?feature=player_embedded&v=OE8xqD5k9Fw

ENJOY PYRO!

[countryboy7978]

This is not an HE. I've researched these tro de bac. These items are made using a mixture of potassium chlorate, antimony trisulfide, and sulfur, coated on gravel or other media that will cause friction This can be seen on the video of the mixture being diapered. The dark color of the mixture and white sparks given during the report reinforce this.

[displayfireworks1]

When I spoke with Riccardo about these he told me they are very closely regulate their use for this event. His company may be the only ones making them. If someone has the formula to make them please post it I would enjoy seeing it.
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Here is something I found from 2013 so the dates may be off but it summarizes the event.

Exuberant and anarchic, Las Fallas is Europe’s wildest spring party, which is a pretty big deal for what is essentially a glorified puppet show. It’s a time when the city is all but taken over by the fallas, which are huge sculptures of papiermâché on wood, built by teams of local artists. Each neighbourhood sponsors its own falla, and when the town wakes after the plantà (overnight placement of the fallas) on the morning of 16 March, more than 350 have been erected. Reaching up to 15m in height, with the most expensive costing more than €350,000 to build, these grotesque, colourful effigies satirise celebrities, current affairs and local customs.
Though the festival begins on 12 March, it doesn’t really get going until after the plantà. The fallas are placed at various locations around the city and you have four days to wander about checking out the displays as well as revelling in the around-the-clock festivities, which include street parties, paella-cooking competitions, parades, open-air concerts and bullfights. What Las Fallas truly prides itself on is fireworks, with afternoon shows that also reach their peak on 16 March. Valencia considers itself the pyrotechnic capital of the world and each day at 2pm a mascletà (more than five minutes of deafening thumps and explosions) literally shakes the city, so much so that pregnant women are banned from attending a mascletà…this could be one of the loudest events you’ve witnessed.

Unsurprisingly, Las Fallas’ grand finale involves fireworks when, at midnight on the final day, each falla goes up in flames in another fiery explosion, with months of work turning to ash in seconds. Thirty minutes after midnight, it’s the turn of the falla judged the festival’s best to be burned. It’s hardly the spoils of victory. Las Fallas is held in honour of St Joseph’s Day (19 March), though it’s said to trace its origins to a pagan celebration of the spring equinox. The first records of the festival are from the late 15th century. Banned in the mid-19th century, and then taxed almost out of existence, the fallas were revived in the 1880s. Today, the festival attracts hundreds of thousands of visitors.

[displayfireworks1]

Firecrackers Shop - Fallas '09, Valencia
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https://www.youtube.com/watch?v=2bm2GN2GQ-M
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I think I seen a couple of those items make it into United States from time to time. LOL

[PyroJoeNEPA]

I saw this article today about the tro' de bac:
http://www.lasprovincias.es/fiestas-tradiciones/201501/27/sigue-tradicion-20150127000030-v.html?ns_campaign=WC_MS&ns_source=BT&ns_linkname=Scroll&ns_fee=0&ns_mchannel=FB

It is in Spanish but I did a google translate on it---there is a pic of assembly on the page.

The tradition of throwing tro de bac in despertaes has decreased, but refuses to go away. Proof of this is that the pyrotechnic company Height Zarzoso this year will continue to manufacture this product Fallas week for both macrodespertà organized by the Central Board Fallera for Crida (Sunday 22 February), and for the morning events Fallas week.

As confirmed from the company's height, to date, are already twenty committees or groups who have completed the reserve material. "Last year there were about fourteen orders, and this time there are six" indicate Jessica and Chelo Zarzoso.

Another group that made the order for the first time cite the failure Manuel Melia and Fuster-Carlos Cortina, clustering center and Sagunto-Quart. In Valencia there are other repeating as the Rat Penat, Flashlight and failures Xirivella or Mislata.

In principle provide make half a million units, ie, 10,000 cases with 50 pieces each. "The commissions are still thinking about the issue have to go making the request because we have to submit documentation to the Ministry of Industry, because you have to tell the number of participants, travel and start and end of the event and the name of an authorized fallero responsible "indicate.

[wizard7611]

I hope those fireworks hanging from the ceiling in the museum from Spain aren't real.

[PyroJoeNEPA]

I hope those fireworks hanging from the ceiling in the museum from Spain aren't real.
HaHa---indoor Mascleta!!!

[Niceshellsdude]

Looked like everyone was negotiating prices at the counter.