eBay- 10" PVC pipe $16.00 per foot
Tempting...
Basketball cannon anyone?
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Gun Freak
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JSR wants it... 
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
its depressing-
Gun Freak
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Lol c11man how old are you?
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
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jackssmirkingrevenge
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JSR tends to build on the smaller side, but for those of you with the benefit of land over which to shoot, why notGun Freak wrote:JSR wants it...
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Gun Freak
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DANG. Thats pretty big.jackssmirkingrevenge wrote:why not
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
Thats what she said.DANG. Thats pretty big.
Nice...are you planning on buying it?
"You can't be friends with anyone if you aren't friends with yourself."
"I'd rather be hated for who I am, than loved for who I'm not." -André Gide
Give me a lever long enough, and a fulcrum on which to place it and I shall move the world.
–Archimedes
Defeat is always momentary.
–Carl Denham
Current Project: None, I'm in Spudremission.
"I'd rather be hated for who I am, than loved for who I'm not." -André Gide
Give me a lever long enough, and a fulcrum on which to place it and I shall move the world.
–Archimedes
Defeat is always momentary.
–Carl Denham
Current Project: None, I'm in Spudremission.
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daberno123
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Not sure yet. I'd love to but I don't really have the space to shoot it (I live in the suburbs). I could take it to a local park I suppose...
Four feet would cost me $86 shipped to where I live. That's manageable but I'm trying to think how often I'd actually get out and shoot it
Four feet would cost me $86 shipped to where I live. That's manageable but I'm trying to think how often I'd actually get out and shoot it
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daberno123
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Good point. I wonder how many shots a basketball could take out of a cannon like this?
If I were to build build this, I'd also have to figure out a way to plug one end of it. Since a 10" cap costs several hundred dollars, I'd probably use concrete to cast a base around the pipe, which would make the cannon even harder to transport.
If I were to build build this, I'd also have to figure out a way to plug one end of it. Since a 10" cap costs several hundred dollars, I'd probably use concrete to cast a base around the pipe, which would make the cannon even harder to transport.
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joepage2008x2
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I have some plastic sewer pipe sections. 10" PVC 2ft sections, two of them but can get up to 10 for free. I live in UK so a cannon like this would be illegal unfortunately, far too dangerous as the tube is only 1/4" thick and my money at the moment is going in another project so dont have any spare for sealent, im literally 100yards from a field too. I would have made one a few years ago when I never thought of the danger,
10" SCH40....
A quick calculation, comparing 1" sch40 to 10" sch40.
According to wikipedia:
1" SCH40
OD: 33.40 mm
Wall thickness: 3.378 mm
ID: 33.40-(2*3.378) = 26.6 mm
ID:wall ratio: 7.87
10" SCH40
OD: 273.05 mm
Wall: 9.271 mm
ID: 273.05-(2*9.271) = 254 mm
Ratio: 27.4
So the burst pressure of 10" sch40 is...
27.4/7.87=3.84
Almost 4 times LOWER than 1" sch40!
1" sch40 can be used up to, what...? 150 psi?
Then 150/4=37.5 psi
You can use this 10" pipe only up to ~40 psi.
You NEED SCH80 for a simple combustion.
EDIT:
Or metal pipe.
A quick calculation, comparing 1" sch40 to 10" sch40.
According to wikipedia:
1" SCH40
OD: 33.40 mm
Wall thickness: 3.378 mm
ID: 33.40-(2*3.378) = 26.6 mm
ID:wall ratio: 7.87
10" SCH40
OD: 273.05 mm
Wall: 9.271 mm
ID: 273.05-(2*9.271) = 254 mm
Ratio: 27.4
So the burst pressure of 10" sch40 is...
27.4/7.87=3.84
Almost 4 times LOWER than 1" sch40!
1" sch40 can be used up to, what...? 150 psi?
Then 150/4=37.5 psi
You can use this 10" pipe only up to ~40 psi.
You NEED SCH80 for a simple combustion.
EDIT:
Or metal pipe.
Last edited by psycix on Wed Mar 10, 2010 3:54 pm, edited 1 time in total.
