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Jim Phelps plugged two together by mistake......third degree burns from the short......I have done this at a racing event with nicads while rushing to get to my next heat of racing.
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Um, think about that for just a second. Times up.
What normally goes in an AMMO box? Would not that imply "bits of metal and gunpowder?" And just why do AMMO boxes weigh so much? Is it not because they're THICK STEEL intended to contain exploding rounds?
LiPos do NOT explode. They catch fire. They spew a flame, a la flame throwers.
No holes are necessary.
AndySpektrum Development TeamComment
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Agree on that one! I own two ammo boxes the walls are very thick compared to the coin box seen in a video. I'm not aware of any tests done with the new breed of monster size packs and there will be major pressure creating that (bomb effect) just don't know if the gas/heat build up would be enough allow anything other then smoke to escape.Comment
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I learned along time ago these things arent toys i had a highly modified emaxx climb my leg and pizza cut it i have the scar and 4 stitches to prove it lol i make sure i turn everyone away from a cheap charger too ive got a hyperion and love itComment
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I need to invest in some lipo sacks.
$15 lipo sack > house burning downComment
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Saw this, thought i would chime in. My storage at home is an old non working kiln i have, i could have 20 packs of 6s go off and all that would happen is the smoke vented outside and maybe pissing the kiln off a bit.
Kilns are expensive even used broken ones but you can find them for between 200-600 bucks depending on size, so alternatives are these.
Soft kiln bricks (silica) you can cut them with a hand saw lining an aluminum case or a pit in the ground if you prefer, or make your own metal enclosure and line it with these. you also have KAOWOOL for kilns, cheap, comes in 1/16 to 2 inch thicknesses any lengths. KAOWOOL boards, self supporting, also easy to cut, they make great liners, 1/4 to 1 inch thick boards, also fairly cheap considering the consequences.
everything i mentioned is rated to 2800 degrees and 1800 degrees, lithium will burn at 1100-1300 constant with a microsecond flash over 3000 wich doesnt do anything for burning and wont even piss off the silica brick or kaowool over 1/2 inch thick, though it will discolor it.
i line my kiln when firing with 1/8 inch kaowool to 2800 degrees for several hours it goes in white, comes out white. tests i have done with flash burns will discolor or char the surface of 1/8 inch kaowool so 1/2 inch looks ok.
for charging, a kiln shelf (cheap) in whatever size with a few soft kiln bricks on the perimeter makes a great charging stand, though i just use the shelf as i stare at my packs while they charge.
Hazmat warnings for kaowool is to use a respirator when cutting but unlike abestos it is made of ceramic and not iron (and wont oxidize) and is totally inert, it wont give you splinters either like CF, just wash your hands after cutting it. Good stuff.Comment
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Great Post James!
I just happen to know where I can get the Kaewool for free. The place I work has heat treat ovens and they have buckets of the stuff.IMPBA 20481S D-12Comment
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Don't get me wrong, lipos do deserve respect. It's funny though, I remember reading threads like this on other rc sites about NiMh batteries some years ago........... I remember some guys referring to NiMh as "a bomb waiting to go off" In my 25 years of dealing with RC vehicles/aircraft the only batteries that I have ever seen explode were NiMhs and NiCd. The big thing about puffing of a lipo is that the foil fatigues eventually, or there is too much gas pressure produced and the foil wrapping fails resulting in fire. That along with shorting out of leads. I feel it basically boils down to a little more care taken with the charging and discharging. AS most know lipos cannot handle the over discharging that other chemistries can tolerate.Comment
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Best way to charge a lipo is get a plant pot drill two holes in the side for your wires ( i adapted mine so there is a 8s balance board crammed through a hole, fill the plant pot with sand.
im in a dilema, we have a 4 car garage packed with expensive cars etc and it has welding equipment in it as well as 200 liters of fuel stored in the pit... so house or garage?? if a gas bottle went off its bye bye house + garage...Hpr 06 / 09 / 150 /185, Mhz Skater H45 hydro.
Uk SAW record holderComment
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Not to piss in anyone cheerios
(grin) but ammo cans are thick because of the rough handling they receive in transporting the ammo, joe is rough when loading and unloading boxes. They will not stop an exploding round, i know this first hand.
If they have bits of metal or gunpowder in them its because civy yenu in the backwoods used them in an improper way and pawned them. A new ammo can that has just had its rounds pulled out is exceptionally clean, Red River has a reputation to uphold.
They are sealed and watertight if the latch and rubber seals are still good. If overpressurized the can will pop or explode along the weld seam, so a small vent or the top seal removed might not be such a bad thing.Comment
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fairly sure fire blankets are made from fibreglass cloth, wonder if a piece of cloth thrown over a burning lipo would put it out once they air supply is cut of.
anyone have any ideas
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My ammo cans all have the rubber lip seal removed, it helps to vent them and make them easier to close and latch. I also grind a notch in both sides to lay the wires in. I have not had a lipo ignite in one yet, just a NiMh pack.Comment
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Hi Andy,
Ammo boxes are designed primarily to keep the elements away from ammunition (moisture), and can explode if subjected to heat. I'll refer you to these threads, the first one specifically talks about the problems of storing lipos in a sealed metal ammo box.
-ChiefComment
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