MarcS said:
Canmore summed it up a lot better than me.
I would not want to be some rescue worker at an accident, cutting someone out of a car when one of your crappy welds burst because you wanted to think your an engineer and or above the law.
I've also noticed most people that responded "Yea" are under 25 years old and still in that "Know it all" phase of life.
I'm done with the subject. I can afford to buy the properly approved containers and mounts.
Welds burst? Do you have any idea what you just said? In order for it to be remotely dangerous you'd have to be using a cutting torch without safety glasses. I haven't seen anyone provide a law that says you can't have bumpers with pressurized air in them.
It's not a "know it all" phase in life, it's called common sense and being something besides booksmart and braindead... like most wannabe mechanical engineers.
The only way it'd be remotely dangerous is if:
You could somehow squish the tube so the pressure inside grows astronomically so your air fitting shoots off... assuming you're retarded and didn't install a blowoff valve or somehow you have indestructible hoses...
You could somehow get something the size of a BB to shoot out the fitting or valve.
ntsqd said:
You are right, I can't qoute them verbatim. Can you?
Adding thickness to replace good design is exceptionally bad practice. At the risk of offending someone I'll call that the N-rigged method of building it. Has it occurred to anyone here that maybe those design practices, REGARDLESS of the metal thickness, came about b/c of bad experiences? Why the **** do you want to risk repeating them?
I learned a long time ago in dealing with mechanical engineers with doctorates that just because someone thinks they're smart that doesn't mean they have any real world experience.
I believe most guidelines, specifications, and requirements are to keep dumb engineers from making mistakes that can cost people their lives. Our campus has a walkway that can't be used in the wintertime due to the fact that it can't support both people and snow load. The architect, engineers, and builders all were there when there was snow on the ground and the walkway was actually built in the snow. Common sense can look at something and say "wow, I bet them there bridgemajigger can have enough snow piled on top of it to be equivalent of having 4" of water spread over the entire span".
ntsqd said:
You have obviously never set off a "veggie bomb." 6 times out of 10 it will do as you describe. The other 4 times one end goes flying. It IS effectively shrapnel. Those are not good odds.
Using what as the propellant? Compressed air? If it was merely compressed air then what were you using for the tube? A carpet tube? If you were using a flammable gas then what do you think the pressure is, 10,000psi? 20,000 psi?
I've made a bunch of them in the past, used acetylene and oxygen as the propellant.
Honestly, the AC system in your automobile is more dangerous than a mild steel bumper filled full of air. The AC system in your automobile has highly flammable oil in it... and if it happens to use a flammable refrigerant (some states have banned this) then it's doubly dangerous. 200+psi of flaming fun. What happens when the AC condensor ruptures... which is often close to 100psi? Do people die from little fins hitting them in the colon or something? Yeah, that's what I thought.
Yeah, there's a small amount of danger in using a bumper with compressed air in it. It's all relative I guess. I'd say it's about as dangerous as cleaning your fish tank. It's not like you're playing racquetball with a hand grenade.
