How about a "D" battery or a soup can filled with cement for a projectile? I got real interested in build a cannon after visiting Gettysburg and hearing how accurate those BP cannons were. Still haven gotten to it!
Upvote 0
The PVC, 1-1/4" Bore PCP air cannon????
- Thread starter ThomasT
- Start date
Fascinating trigger! I guess I didn't scrutinize the photos. All of mine were built with solenoid sprinkler valves and fired electrically (A couple 9V batts and a switch for a trigger.) There are probably better battery options these days.
GsT
GsT
Upvote 0
- Apr 25, 2021
- 3,915
- 5,708
- 83
Hello @GeneT
This trigger works off of a vacuum principal. The "blow gun" acts as the trigger by releasing the vacuum. When you charge the tank with air, a vacuum is created on the back side of a diaphragm which holds the pressure in the tank. Release the vacuum and bingo, all of the air is released instantly.
ThomasT
Upvote 0
I did.
I hope people read the entire link I provided. It clearly states that PVC is not approved for use with compressed air. No where does it state any acceptable air pressure level for PVC pipe.
I am not looking for an argument or trying to win any points here. I just want folks to know that compressed air and PVC are a dangerous mix and wanted people to see what the makers of PVC pie and fittings say about mixing the two.
Eighteen years spent selling pipe, valves and fittings to commercial and industrial installers and another 6 years in the plumbing business and it was drilled into our brains not to mix PVC and compressed air.
I just wanted to provide the information. What people do with it is their business.
Upvote 0
- Apr 25, 2021
- 3,915
- 5,708
- 83
Hey @Chukar60
Your statement is an absolute false and misleading assessment “ I just want folks to know that compressed air and PVC are a dangerous mix “. Explain the difference between 60 pounds of air pressure and 100 pounds of water pressure. OR, explain this chart?
Have a great day,
ThomasT
Your statement is an absolute false and misleading assessment “ I just want folks to know that compressed air and PVC are a dangerous mix “. Explain the difference between 60 pounds of air pressure and 100 pounds of water pressure. OR, explain this chart?
Have a great day,
ThomasT
Upvote 0
Speaking of vacuum, those vacuum cannons shooting a ping pong ball thru a paddle,,,,,,, well my grey goo kick out a " interesting " in that regard.
Flowrates in pipes and pressures are engineering 101,,,, also in Denmark.
Also as i recall what Howard used to take down the smartarses know it all Sheldon in the Big Bang TV show.
Flowrates in pipes and pressures are engineering 101,,,, also in Denmark.
Also as i recall what Howard used to take down the smartarses know it all Sheldon in the Big Bang TV show.
Upvote 0
I got to take a coworker to the ER to get stitched up and remove pvc shards from his arm and face after he bumped a fitting with a piece of lumber while removing it from a rack. He ended up with a meager settlement from the incident that has allowed him to live work free in a crappy camper in Montana. Some guys have all the luck. 
Upvote 0
- Apr 25, 2021
- 3,915
- 5,708
- 83
Good morning @thomasairI got to take a coworker to the ER to get stitched up and remove pvc shards from his arm and face after he bumped a fitting with a piece of lumber while removing it from a rack. He ended up with a meager settlement from the incident that has allowed him to live work free in a crappy camper in Montana. Some guys have all the luck.
yes sir, some folks are just born lucky .ThomasT
Upvote 0