BJV Posted July 5, 2012 Posted July 5, 2012 Hi All, I have a large festival ball in the works.So far I have the main stars complete it took over 13lbs of comp.The burst is finished I made 9lbs black powder on cotton seed 1:1Just started on the inter petal. I will post up-dates later. Below are a few photosof what I have complete.BJV
BJV Posted July 6, 2012 Author Posted July 6, 2012 WOW! that's about all I can say what size is it?bob 12" bobBJV
PyroAce Posted July 7, 2012 Posted July 7, 2012 WOW! What a monster! Your going to have fun pasting this one!What's the purpose of the tissue paper wrapped around the time fuse on the inner shell?
BJV Posted July 7, 2012 Author Posted July 7, 2012 WOW! What a monster! Your going to have fun pasting this one!What's the purpose of the tissue paper wrapped around the time fuse on the inner shell? The tissue paper is used to separate the burst from the stars.BJV
PyroAce Posted July 7, 2012 Posted July 7, 2012 The tissue paper is used to separate the burst from the stars.BJV Ah ok no probs, it just looked like it was there for some other purpose because normally the stars are loaded then the tissue paper with the burst in it.How long does a shell of this size take to complete?
BJV Posted July 7, 2012 Author Posted July 7, 2012 Ah ok no probs, it just looked like it was there for some other purpose because normally the stars are loaded then the tissue paper with the burst in it.How long does a shell of this size take to complete? The most time involved is star drying and burst drying time. Will let you know how long it takes to complete.When its complete.BJV
ExplosiveCoek Posted July 7, 2012 Posted July 7, 2012 Have you checked the stars for their burn time? Most of the time I use hemi size/10 is the size of the stars, so 30mm in this case. But yours are only 23mm? Do you still have to prime them, or does this rule not apply anymore when you're starting to make bigger shell's? Biggest one I've made so far is 6'' so I can't say for sure..
PyroAce Posted July 7, 2012 Posted July 7, 2012 The most time involved is star drying and burst drying time. Will let you know how long it takes to complete.When its complete.BJV Thanks for the info! Can you please post more pics up of the progress of the shell being built? I find pics of the construction process very helpful And what kind of stars will be in this shell?
BJV Posted July 7, 2012 Author Posted July 7, 2012 Have you checked the stars for their burn time? Most of the time I use hemi size/10 is the size of the stars, so 30mm in this case. But yours are only 23mm? Do you still have to prime them, or does this rule not apply anymore when you're starting to make bigger shell's? Biggest one I've made so far is 6'' so I can't say for sure..Explosive Cork I am just going on what Dr. Shimizu recommends for star size for a 12" shell.See table below:BJV
fredhappy Posted July 7, 2012 Posted July 7, 2012 Barry, those stars and breakcharge look very nicely done. Great project....
marks265 Posted July 8, 2012 Posted July 8, 2012 Looks good so far BJV. By the time your done I imagine that thing will weigh about 20-22 pounds depending on what stars you stuff in it. I'm working on another 12 myself right now. I like working on bigger shells it just seems easier on my half broke meat hooks! Will you be hand pasting it or do you have a WASP or other shell pasting machine? I bought a WASP after I started hand pasting 8's so I couldn't imagine doing a 12"er. Mark
BJV Posted July 9, 2012 Author Posted July 9, 2012 12” Double-Petalled Chrysanthemum w/ pistil Construction Hi All,Here is an up-date on the 12' shell I have been working on the last couple of weeks,Below are a few more photo of the shell Construction. BJV
ExplosiveCoek Posted July 9, 2012 Posted July 9, 2012 Looking good . No booster? When are you going to shoot it?
burningRNX Posted July 9, 2012 Posted July 9, 2012 (edited) Awsome stuff, I'm verry curious about its performance Do you have some details about the compositions?Just curious, how did you transfer the fire from the timefuse into the tube? crossmatched? Edited July 9, 2012 by burningRNX
BJV Posted July 9, 2012 Author Posted July 9, 2012 Looking good . No booster? When are you going to shoot it? No Booster, the inter petal 6" I used rice hulls with hot bp 5:1The main bursting charge is on cotton seed with hot bp 1:1I will shoot this shell Sept 8th or 9th and have video.BJV
BJV Posted July 16, 2012 Author Posted July 16, 2012 Hi All, Finished pasting my 12" shell, yes hand pasting. All that is left itadd the leader (quick match)BJV
bob Posted July 16, 2012 Posted July 16, 2012 what is the point of the hole in the top of it?and very nice shells bob
BJV Posted July 16, 2012 Author Posted July 16, 2012 what is the point of the hole in the top of it?and very nice shells bob It's how I load the shell. Check out TAKEO SHIMIZU book. FIREWORKSThe Art Science and Technique. BJV
Zumber Posted July 25, 2012 Posted July 25, 2012 No Booster, the inter petal 6" I used rice hulls with hot bp 5:1The main bursting charge is on cotton seed with hot bp 1:1I will shoot this shell Sept 8th or 9th and have video.BJVwhat is hot bp BJV??Do you use aluminium in it?
bob Posted July 25, 2012 Posted July 25, 2012 what is hot bp BJV??Do you use aluminium in it? I think he just means fast burning black powder nothing added just good ball mill and good charcoal bob
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