copper cannon question

[mr.potatohead]

im making a copper cannon and i must solder all the joints is there a way to make the joints where i soldered stronger and what psi may i go up to it is a coaxial canon
also

[killerbanjo]

As long as you solder well you do not need to make them stronger... Depends on the copper but i think most copper is rated for about 120psi. I know BtB went to about 300psi with copper but said it felt very nasty... Im sure 200psi would be ok and 240psi is pushing it.

[sagthegreat]

copper is rated for atleast 500psi, more if its type L. But when your done, start shooting at 100 psi, and bring your way up. stop were u feel safe.

[mr.potatohead]

i thought copper could hold more

[jsefcik]

as long as you have good joints, in school we hooked when up and pumped it up to 600 psi, but im not recommending it, stop when you think its good enough

[killerbanjo]

i would not trust plumbing copper at 600 psi... I would be shitting myself.

[Gippeto]

Read...

http://www.google.ca/url?sa=t&rct=j&q=c ... wB3yLmPGBQ

Tube ratings start on pg 25. Pay special attention to the note found on the bottom of page 27.

Joint ratings for various solders/brazing alloys are on page 28.

[jsefcik]

i would not trust plumbing copper at 600 psi... I would be shitting myself.

its was pretty neat actually, but then we let all the pressure out, but we did hook a soda bottle up and start pumping =)

that was awesome!!

[Crna Legija]

\ what psi may i go up to

that all depends on what type off copper pipe you the size, what solder you use, and of course how well you solder the joints.

[jsefcik]

\ what psi may i go up to

that all depends on what type off copper pipe you the size, what solder you use, and of course how well you solder the joints.

That is very true,, if you braze it you can with stand higher pressures

[Gippeto]

That is very true,, if you braze it you can with stand higher pressures

See my previous post...try reading it too.

[mattyzip77]

Hooked on Phonics worked for me!!!!!

[Crna Legija]

That is very true,, if you braze it you can with stand higher pressures

that could lower it because it heats up the pipe to much witch makes it weaker.

[Zeus]

Yeah, brazing will anneal copper, due to the temperature involved, whereas soldering doesn't usually get to those temperatures.

[jsefcik]

Yeah, brazing will anneal copper, due to the temperature involved, whereas soldering doesn't usually get to those temperatures.

brazing is alot better, higher pressures, your safer, look at refrigeration lines those are all brazed