38 replies to this topic

[Atom Fireworks]

I have been watching videos on youtube and came across this, swedens whole display was immense but ime fascinated with the material at 1.06 ish. What are these i cant work it out, they are absolutly amazing. Please take a look and see if you know what they are !!

[phildunford]

Some very nice crown wheels - aka girondola by the look of them.

They are wheels that are made of a ring of rocket motors that lift and spin them.

Very careful graduation of the power of the motors can make them rise and fall, but never seen any as good as this!

[The Legendary Graham]

Yes double crown wheels we have used many over the years but nothing like as good as those just regular silver sparks out of the motors and whistles.

[crystal palace fireworks]

Yes double crown wheels we have used many over the years but nothing like as good as those just regular silver sparks out of the motors and whistles.

Any chance of a photo of what they actually look like?...please!

[Mortartube]

Even better than a photo.



This is a single acting crown wheel. The double ones as shown in the Motreal video, have two sets of lifting motors. After the first set burn out, there is a small delay and the wheel drops back to Earth, then the second set light and send it back up again

Some more Girandolas. These are more normal size for use on displays.

Edited by Mortartube, 13 September 2010 - 08:42 AM.

[The Legendary Graham]

Edited by The Legandary Graham, 13 September 2010 - 08:55 PM.

[Creepin_pyro]

http://www.pyrobin.com/files/porc1.jpg

[The Legendary Graham]

[crystal palace fireworks]

Thanks `Legandary Graham` and `Creepin-pyro` for uploading the girondola photos, Ive seen the single crown wheels before, but never the doubles.

Thanks `Mortartube` for clearly explaining the motion/concept regarding how the doubles work in the Montreal display, this certainly sparks my imagination on other possiblities for new construction techniques/materials etc, along with the skill/appreciation involved with the drivers, burn rates/delays & weight etc = very very clever.

[Potassium chlorate]

GFF is simply great. Although professional firework shows aren't a huge thing in Sweden compared to countries like Spain,. Malta, Italy, Japan etc, they often win.

[crystal palace fireworks]

GFF is simply great. Although professional firework shows aren't a huge thing in Sweden compared to countries like Spain,. Malta, Italy, Japan etc, they often win.

Without seeing the competition winners (Canada), Goteborgs was unlucky not to win first prize, there timing and mix of old and new is some of the best Ive seen.

[phildunford]

Think this was in Lancaster's book.

Kimbolton fired a girondola at a display & it decided to go sideways, skimming the heads of the crowd and landing behind them. With the crew waiting for the angry reaction, someone in the audience said - " that was great - how did you make it do that?"

Observation - if you think rocket sticks are a problem, what about something the size of a bucket falling out of the sky!

[dr thrust]

lol i had the same thought about them at a public display, what if it goes t~ts up, surely there must be a larger fall out zone needed for these?

[phildunford]

surely there must be a larger fall out zone needed for these?

Size of a small town I would hope!

BTW, surely these must be 'fireworks of eratic flight'...

[Arthur Brown]

Yes they are "of erratic flight" but I still like the look of them on video. Somewhere on Youtube there is a vid of a HUGE girandola being chased by a party of about 30 men who try to guide it's direction of flight with hands and sticks, scary! That one was probably not in the UK.