Fuse Lengths

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jay

Noble the 2nd
Oct 11, 2012
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69
1,189
not sure if this is the right place but...
just wondering if anyone knows whether different fireworks have different fuse lengths and how long should they take to burn. for example if I wanted to fire volley of 1.3G rockets so that they launch as soon as 30 second long cake ends, would it be different to firing 1.4G rockets? :confused:
 

jay

Noble the 2nd
Oct 11, 2012
221
69
1,189
it's just that smaller fireworks seem to have shorter fuses. especially with rockets.
 

Somersetpyro

Moderator
S-T Fireworks Guardian
Dec 16, 2013
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Taunton
it's just that smaller fireworks seem to have shorter fuses. especially with rockets.
think it may be mixed, thinking about it we've had small fountains with longer fuses than large candles.
Although maybe the bigger items mah have longer fuses to give you more time to retire before it goes off
 

zephieish

Moderator
Royal Knight the 1st
Sep 6, 2014
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West Midlands
Best advice is to test a sample of each one if you can, and note down the delay from lighting to ignition.

Fireworks come with different lengths and different positions of fuse placement, it's really hard to judge.
 

zephieish

Moderator
Royal Knight the 1st
Sep 6, 2014
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I think Cat 3 items have to have a 7 second delay, before igniting.

Perhaps you could time 7 seconds before the end of the cake and then light the rockets :)

How will you be lighting them?
 
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Reactions: Somersetpyro
Oct 13, 2014
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glasgow
green visco fuse usually burns about 1 cm a second. measure the fuse give you a rough idea of the burn time