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Guinness world record attempt 60 inch shell


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#1 Dean411

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Posted 04 March 2014 - 07:30 AM

https://www.kickstar...y-set-a-world-r

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Edited by Dean411, 04 March 2014 - 08:16 AM.

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#2 AzoMittle

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Posted 04 March 2014 - 07:41 AM

This is ridiculous, I'll be watching


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#3 Dean411

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Posted 04 March 2014 - 08:21 AM

I posted this to inform people in the pyro community , I am not a part of it although I know some of the people involved.

I am sure the same comments were made at the thought of 24 inch , 36 inch and 48 inch now they are all fired regularly in japan and elsewhere.
So I really dont see it as ridiculous!

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#4 BrainDamage

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Posted 04 March 2014 - 11:24 AM

That is going to be one BIG SHELL 5 feet



#5 Blackthumb

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Posted 05 March 2014 - 01:48 PM

Calculated lift? What kind?


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#6 ddewees

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Posted 05 March 2014 - 03:21 PM

Just rough numbers, but a 60 inch sphere is:

113,097 cubic inches,
Which holds 489.6 gallons,
Which would weigh almost two tons filled with water (3,916.8 lbs).

#7 Mumbles

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Posted 05 March 2014 - 03:33 PM

I'd estimate the shell weight to be closer to 4700-5000lbs.  When the size of a shell doubles, it approximately scales.  A 4" ball shell weighs about 1lb, so an 8" shell should weigh about 8lbs.  A 12" shell weighs around 18-22lbs, so a 24" shell weighs about 160lbs (real weight about 140ish).  A 16" shell weighs about 70lbs, so a 32" shell should weigh about 560lbs.  A 36" shell weighs about 650-700lbs, so a 64" shell would weigh about 5200-5500lbs.  Subtract a bit for being 60" instead of 64" and you're in the ball park.


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#8 ddewees

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Posted 05 March 2014 - 03:36 PM

They should hold a contest that if you can guess the weight, you get to light the fuse.

Does it have to be "launched" by traditions means? I would image it'd be easier to drop it out of an airplane "Hiroshima" style... just sayin.

Edited by ddewees, 05 March 2014 - 03:46 PM.


#9 nater

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Posted 06 March 2014 - 09:23 AM

Wow, that is an interesting analogy. 

 

They intend for it to be lifted as a traditional shell. 


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#10 Mumbles

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Posted 11 March 2014 - 04:04 PM

Hah, so it turns out I'm occasionally terrible at math.  Somehow 36 x 2 equals 64 in my mind.  My initial estimate was way off.  Fred says 1700lbs, I'd be more inclined to go with between 2000-2100. 


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#11 TYRONEEZEKIEL

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Posted 11 March 2014 - 04:33 PM

That number makes much more sense as I have a hard time seeing the shell being more dense than a water filled shell. Rice hulls are used because they are light
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#12 nater

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Posted 12 March 2014 - 04:00 AM

On large shells, cotton seed is often used as it is even larger and lighter than rice hulls.  On monster shells like this project, I have no idea what they will use as a carrier to get the appropriate about of burst and keep the shell as light as possible.


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#13 marks265

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Posted 12 March 2014 - 05:34 AM

Maybe they could use tennis balls, or stuffed teddy bears or maybe cabbage patch dolls.   :)


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#14 Bobosan

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Posted 12 March 2014 - 07:16 AM

Maybe they could use tennis balls, or stuffed teddy bears or maybe cabbage patch dolls.   :)

 

oh my, that's disturbing.  :lol: :D



#15 Mumbles

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Posted 12 March 2014 - 12:47 PM

Some 36" shells I'm aware of used full sized wine corks as a carrier, and bed sheets to separate the burst from the inserts/stars.  Just imagine pasting in the three dozen(ish) 8" shells used, in addition to making the casing by hand, and pasting the 100 or so layers on the outside by hand.  Makes you appreciate how easy the WASP has made some people's lives. 


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#16 Niladmirari

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Posted 16 March 2014 - 04:24 AM

Most of the weight of the shell - it stars.

Weight and cost can be reduced if you use a star TT+8%Ti or C8+ 8%MgAl (in reality it is a comet stars :) ).


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#17 Niladmirari

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Posted 16 March 2014 - 04:33 AM

Even cheaper fill him shells 4-6 inches. And glue comet to shells.


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#18 ddewees

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Posted 16 March 2014 - 04:27 PM

I guess they put this project on hold?

#19 Seymour

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Posted 24 March 2014 - 06:21 PM

I've always had this fantasy of breaking the world record myself, and going straight to a six footer. I'm glad that some people are breaking the world record without killing my unlikely to be fullfilled fantasy. I'll keep dreaming though!

 

ddewees, I'd be very tempted to drop it from an aircraft too. Not only would it be easier, but probably cheaper too, when you consider the cost of buying and setting up the mortar for only one, or at most a few shells.

 

I'd be really impressed if they dio lift it traditionally though!



#20 taiwanluthiers

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Posted 28 March 2014 - 09:24 PM

I think there could be legal challenges to air dropping shells... mostly it's against the law to carry explosives on a plane. Might be easier to cooperate with the military on this matter and drop it from a military aircraft. An altimeter would be needed to be installed on the shell so that it bursts at a precise altitude.






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