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#21 lloyd

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Posted 11 April 2017 - 06:31 PM

Chuck, this is only an opinion, not 'fact':  I consider ALL tubes "single-use".  Tubes strong enough to lift comets or mines are so cheap when bought in bulk, that it's just not worth the trouble to treat them to try to make them last longer.

 

Again... just my opinion...

 

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#22 chuckufarley

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Posted 11 April 2017 - 06:42 PM

That's what I always thought too Lloyd. The treatment I heard of was for cardboard consumer mortars to increase their lifespan. But hearing OM get so much use out of his made me curious if he was doing anything special.

#23 OldMarine

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Posted 11 April 2017 - 06:47 PM

Nah, these tiny things don't take but about 9 -10 grams of lift and fit fairly loose in the tubes so I'm getting no tube blowout or real burn damage. Even the crackle loaded ones are only about 10 grams including the gum tape skirt I'm putting on them to amplify the lift!


Come on! Name one other hobby in which you cheer as your money and hard work go up in smoke!

#24 chuckufarley

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Posted 11 April 2017 - 07:04 PM

Im assuming you drill a hole/holes just above the plug to ignite the lift/Passfire to the next tube. Or do you leader the shells?

#25 OldMarine

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Posted 11 April 2017 - 07:32 PM

Yeah Chuck, I have a hole drilled through both sides just above the plug since I planned on chain fusing these into 12 shot cakes. I made up a gross of the tubes so I'd have enough for a dozen come time to light them. I suspect I'd better make up another dozen to make up for "test losses" and other necessary fun..er....experimentation. Yeah, that's the ticket!


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#26 chuckufarley

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Posted 11 April 2017 - 07:34 PM

Sounds fun! Keep us posted on your progress.

#27 OldMarine

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Posted 11 April 2017 - 07:57 PM

I'm just started on an unlimited data plan so I'll try to put up a video soon just to see how it goes.


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#28 Mumbles

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Posted 12 April 2017 - 11:47 AM

Hygroscopic BP residue would be my biggest concern, not lift forces.  You can always try to preserve them.  They're cheap enough to discard every once in a while though.  The water glass and calcium chloride treatment would be a quick way to start.  Pyrocreations does sell little pre-made 1" cardboard mortars if you're interested.  http://www.pyrocreat...tar-1-inch.html  They look to just be their normal 1" x 4" tubes stuck onto a base.

 

For a more permanent mortar, you could look into HDPE.  This size of HDPE is often only available on a roll, but sticks might be available.  The rolls can also be straightened in short lengths by inserting a dowel into them and allowing them to relax back straight.  I've heard putting them in the sun can help.  There used to be some places that sold smaller ones like 1" or 1.2", but I am unable to find any in stock at the moment.  Pyrodirect has 1.2" and 1.5" listed, but out of stock.  Platte River Fireworks has 1.5" and looks to be in stock, but nothing smaller.  It also never hurts to e-mail and ask about smaller sizes.  It may  be available, but just not common enough to warrant keeping in stock.


Just so you guys quit asking, here is the link to the old forum. http://www.xsorbit2....forum/index.cgi

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#29 OldMarine

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Posted 12 April 2017 - 04:44 PM

Kyle has a project on PF that used PVC and with this tiny lift and no salutes sounds safe enough.


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#30 OldMarine

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Posted 12 April 2017 - 07:28 PM

Attached File  IMG_20170412_2287.jpg   30.79KB   1 downloadsMy latest ball shell....


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#31 NeighborJ

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Posted 13 April 2017 - 07:34 PM

I see you found a use for the foil tape. Those tiny plastic shells work good for bottle rocket headers as well. Let's see a video.

#32 OldMarine

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Posted 13 April 2017 - 08:08 PM

Working on it. Gotta make up a bunch more without "testing" them all this time!
I needed a laugh and these little jewels provided it!
Come on! Name one other hobby in which you cheer as your money and hard work go up in smoke!

#33 Mouse

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Posted 16 April 2017 - 02:53 AM

Poly irrigation risers cut in halve work for me!!!!




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