Welcome to ScubaBoard, an online scuba diving forum community where you can join over 205,000 divers from around the world discussing all things related to Scuba Diving. To gain full access to ScubaBoard (and make this large box go away) you must register for a free account. As a registered member you will be able to:
Participate in over 500 dive topic forums and browse from over 5,500,000 posts.
Communicate privately with other divers from around the world.
Post your own photos or view from well over 100,000 user submitted images.
Gain access to our free classifieds marketplace to buy, sell and trade gear, travel and services.
Use the calendar to organize your events and enroll in other members' events.
All this and much more is available to you absolutely free when you register for an account, so sign up today!
If you have any problems with the registration process or your account login, please contact the ScubaBoard Support Team.
The best time of day to dive is after dark. AfterDark
Regeanomics: Start a business in your parents garage and become a billionaire. Obamanomics: Live in your parents garage.
It is a paradoxical truth that tax rates are too high and tax revenues are too low and the soundest way to raise the revenues in the long run is to cut the rates now ... Cutting taxes now is not to incur a budget deficit, but to achieve the more prosperous, expanding economy which can bring a budget surplus."
– John F. Kennedy, Nov. 20, 1962, president's news conference
Thanks for the info Miketsp but I think I'll stick with what I know for this. I want to be able to reuse the cannon and I don't think I want my hand in front of the muzzle when I drop the feather in! Also I like the smoke and smell of the BP! Sounds like intertesting stuff.
The best time of day to dive is after dark. AfterDark
Regeanomics: Start a business in your parents garage and become a billionaire. Obamanomics: Live in your parents garage.
It is a paradoxical truth that tax rates are too high and tax revenues are too low and the soundest way to raise the revenues in the long run is to cut the rates now ... Cutting taxes now is not to incur a budget deficit, but to achieve the more prosperous, expanding economy which can bring a budget surplus."
– John F. Kennedy, Nov. 20, 1962, president's news conference
As a kid I made any number of black powder cannons from pipe of various dimensions, big fun.
Enjoy
I was about 13-14 when I made my last "cannon" out of a pipe. We lit it and waited for it to shoot the gravel out of the end, next thing we knew there was metal buzzing all around us, somehow we didn't get hit by any of it, the biggest piece was about 20 ft away. That was with a potassium chlorate/sugar propellant, an excellent mixture to lose body parts. "A little knowledge is a dangerous thing" I gave up on pipe "cannons"
When I was a kid we used to have a great deal of fun with various bits of pipe, firecrackers, BB's, smokeless powder, waterproof fuse, rocket engines, match heads etc. When my backyard neighbor stopped coming to school, I found out he'd had an accident. Months later a new kid showed up at school. I had to ask around to find out it was him, because he wasn't recognizable. I wasn't exactly scared straight, but I gained a healthy respect for what explosions can do, and a great desire to understand what I was doing before I did it.
The former president of PGI (Pyrotechnics Guild Int'l) was a plastic surgeon. His advice, "keep your back to it, it's easier to make the back look like it used to, than the front"
He was looking down the barrel. Hard to do that with your back to it. I guess that deserves another quote "never get in front of anything that's loaded unless you intend to kill they guy behind it". That was someone on a military range many years ago.
By the way, it was dry pool chlorine and gasoline in a coffee can. It self-ignites. Eventually.
Last edited by DIWdiver; August 28th, 2011 at 09:46 PM.
Reason: spelling
In my last year of prep school, there was a kid who was a real genius with chemistry. He also liked blowing stuff up. Towards the end of the school year, there was an unholy explosion down by the gym - pretty far from the academic buildings that rocked the whole campus.
The kid wound up going to MIT to study chemical engineering, but his right hand, right eye, right ear, and a lot the right side of his face stayed in Connecticut.
Screwing around with explosives in a steel scuba tank is sheer brilliance. You're talking about a 7+' diameter - the destroyers that I was on only had 5" bores. Have fun.
3Likes
LinkBack URL
About LinkBacks
Reply With Quote
! Also I like the smoke and smell of the BP! Sounds like intertesting stuff.
Originally Posted by adurso
