55 gal. is huge! Straight acetylene or mixed with oxygen at the same ratio for a welding tip.
I did a 20 gal. about 6 years ago. Dryer sheet in a kitchen trash bag attached to half dozen helium balloons with a book of matches and cigarette fuse. It made it about 750' up and 1/4 mile out. Easily as loud as as any pro fireworks i have heard and reasonably safe...it was an undeveloped area around my shop..Bunch of leo and fd showed up cruising around trying to figure out what happened....probably cause i did it in the middle of winter.
years ago Had a 30gal plastic trash bag full go off in my hand , in the garage! blew shit all to hell !
my hearing has never been the same ! not to mention molten plastic stuck to my skin. hair eyebrows and stash burnt all to hell ! Static Electricity !!! bag touched bench and K-BOOM !
i wanted to do the same thing,make a separate bag and fill that with helium and send it over the town. Last year we towed a road flair on a line into the bag to set it off,this year we used a 100ft 2wire with a model rocket igniter taped in the bag and a truck battery at the other end,worked perfect! As for the static,i was scared sh!tless hauling it out there. I made a handle to distance myself from it as i walked it out and wore a sweatshirt and paintball mask as i was hooking up the igniter haha. Prolly wouldnt have done it in a north wind.
I was told by an old navy guy the only reason I wasn't hurt any worse was because I was in the center of the blast, he said if I was five or ten feet back would have been a lot worse, maby like the rest of the garage. Blew out all the florsent lights, blew the phone off the wall, everything off all the shelves .
wife said I looked like wile coyote in the roadrunner cartoon sphss
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