Fireworks Blog

As you already have may notice, Spain is a very rich country in the fireworks culture. This time, I will present you a Spanish tradition named " Correfocs ", in English "Fire run". A Correfoc is an event where people dress like devils ( " Diables " ) and carry pitchforks with fireworks like gerbs attached to the top usually named " Carretilla " or " Carrutxa ". Some of these fireworks rotate like Girandolas and have a whistling sound! During the festivals, these people run and dance around and inside crowds of spectators that must wear protective clothes to prevent accidental burns. According to some sources, the Carrefocs emerged in 1978 during the La Mercè festival, in Barcelona. The most famous places for these festivals are the cities of Barcelona, Tarragona, Girona and Catalonia.

It is always a question people do when they start making fireworks shells. How much lift powder do I need to lift my shells up to the "correct" altitude? Maybe there is not a perfect answer for this questions, because this may depend on multiple factors. The main ones are the quality of the powder, whe length of the morta, the clearance (space between the mortar intertnal walls and the shell) and obviously the weight of the shell. I'm not a specialist but by my experince, usually you need to have mortars as tall as at least 5 to 7 times it's diameter, so, suppose you have a 75mm diameter mortar, you need it to be at least 375mm tall. As in gun barrels, usually as more length it has, more precision and distance you can get from the firing. About the space between the mortar internal walls and the shell inside, I would recommend a space of about from 5mm to 7mm all around the shell. Now, if you have a good black powder for lift (check this link about m...