Now this is my kind of thread! I can't believe I've not heard of this before. How do you actually launch the bottle, are you holding it on the compressor wand with your hand or what? I've got to try this.

My dad made this little signal cannon called a thunder mug. Kinda like the beer can shrapnel thing mentioned above. Piece of big hydraulic cylinder sleeved over heavy 1.5" pipe, looks like a big black beer mug or stein. Put about 2oz of FF Goex in it, and pack in some newspaper wadding. It will rattle the windows, you can feel the concussion in your chest. Makes a hell of a smoke and fire ring that spins up in the air about 20 or 30 feet, awesome at night. But I gotta see this plastic bottle thing.

 

If you can get hold of some MRE heaters. They can be fun. Crumple up and dump into empty plastic soda bottle. Apply a small amount of water. Screw on cap. Place on ground and stand well clear. Or at least I have heard about things like this happening. Warning!! This should not be attempted by amateurs only trained professionals.

 

As kids we used to launch soup cans in the air with a Black Cat fire cracker. Take a 5 gallon bucket and put 1 inch of watter in the bottome of the bucket. Take a normal sized soup can and puch a hole in the bottome just big enough to tightly wedge a Black Cat in. Place the soup can with the big hole down in the watter and the firecracker end up. Light the firecracker and step back. A good fire cracker will launch the soup can 100' easy. If you can figure out how to jam 2 Black Cats in there it will go even higher. The fun part is trying to cach the can on its way back down withought getting hit in the face buy it. Bigger fire crackers such as M80's dident work as good. All they did was blow all the watter out of the bucket and destroy the soup can.

Enjoy. It is a good way to wast an afternoon witht he kids.

 

The whole thing this post started on was "bottle rockets" not homeade bombs. Those are a ton of fun as it is. My 8th grade class teacher had manufactured a "launcher" that had held the [lastic 2 liter coke bottles down while air pressure was applide, and at the push of a button, it realeased the coke bottle. The air pressure against the water/jello provided enough force to launch the bottle high in the sky. I can try to explain it if anyone wants, but Im not good at this. It basically had a fork that held down the lip just under the threads of the coke bottle, and at the puch of a button, it retracted enough to release its hold on the bottle. Anyways, a lot of fun. Have fun with this and be careful, but in my experience, plastic doenst shrapenlize too bad, it stays in 3-5 main large pieces, without enough weight to propel too far and too deep Be safe out there

M Sandt

 

Fill the 2 liter with 1/3 water and 2/3 air(it may be the other way around) add your compressed air. Whatever is just under the burst limit and watch em fly. It'll take off like a.....well....rocket . There is a world record set for a water propelled rocket. Can't remember the exact distance, but it was retarded, something like 1400-1600 ft. There was a onboard cam on it. Pretty cool if you ask me!!

 

A soda bottle has threads that match to garden hose threads. So you can take fitting hardware for garden houses, and then match that to pipe hardware, and then match that to your air compressor quick-disconnect hardware.

You put a male disconnect on the end of the bottle, and then plug it into the air compressor. After you reach desired pressure, simply disconnect it and let it fly.

 

I wouldnt doubt they would hold 150 psi, my friends bottle rocket launched at a 45 degree angle back in 5th grade went 400 feet with 80 psi!!! We make dry ice bombs on the fourth every year, VERY LOUD!!! We scared off the neighbors dog, but yea, they expand hella under preasure before they blow, and when they dont go off we dont get near em, we just shoot em with a pellet gun. Good times! I remember the first time we tried it at my friends house his dad was doubting us thinking it wasnt gonna work, so we just stood there for about 5 minutes watchin this 20oz bottle expand then all of a sudden, BANG!!! It was one of the loudest thing we had ever heard! His dad wasnt skepticle any more.

 

as a prank in high school, a guy brought in some dry ice and put it in a 20 oz plastic coke bottle. dropped it in a trash can and walked away, and BOOM! 500 people hit the deck, everyone laughed their edit off.