General > General info Somewhat hot tub related
changes in 20 years...
drewstar:
--- Quote ---I wanna trick mine out to look like this:
Now that is uber-tactical!
Terminator
--- End quote ---
ohhhhh. Don't let Ted Kennedy see that gun. It looks scary and therefore he needs to pass more laws to protect us.
Me? I think it's killer-tastic!
East_TX_Spa:
I'm a little short of funds at the moment, so I might just have to settle for either this
or just go ahead and buy a .50 cal kit gun
Terminator
Brewman:
I'm assuming that there is a rifle somewhere under all that stuff. Would be a real PITA to conceal.
Your right Drew, it looks scary. So we better get some federal laws passed that ban scary looking guns.
But we'll make it disappear in 10 years when the world realizes that it did nothing but cost the taxpayers a whole lot of money.
Oh, wait. We already did that. Not that past mistakes will ever prevent future one.
Snowbird:
--- Quote ---I'm a little short of funds at the moment... Terminator
--- End quote ---
Try this one Term. It's real cheap, but it is almost 6 feet long!
Here are the plans for the cannon. Do not change the dimensions of the Combustion Chamber or barrel otherwise it will not operate well or perhaps even explode. It makes a very loud noise and will fire downrange 300 yards or more depending upon potato shape and weight. If the length of the barrel is shortened then the potato will not reach it's max velocity before exiting. If the barrel is longer then the potato will start to slow before exiting. There is some recoil also
USE SCHEDULE 40 PVC AND IT MUST, REPEAT MUST BE PRESSURE RATED PIPE. Available at Lowes etc. The pipe will have a pressure rating on the side in red print. i.e. 280psi or 330psi. as long as it is pressure rated and not CELLULAR CORE PIPE.
There is an exact ratio between combustion chamber volume and barrel diameter and volume 1.5 to 1. These plans meet these requirements to a "T".
Needed:[*]3 inch pressure rated pvc skd 40 pipe 17 inches long for combustion chamber.
[*]49 5/8 inch barrel, pressure rated skd 40 1 1/2inch dia. pipe
[*]One 3 inch dia. threaded end cap
[*]one 3 inch coupling one side threaded.
[*]One 3 inch reducing bushing down to 1 1/2 inch
[*]One ignitor assembly, either Coleman sparker or charcoal grill replacement.
You must taper the end of the barrel so that it will cut the potato to size.
[*]An old broom handle for a ram rod.
[*]One can of PVC cleaner/primer
[*]One can of PVC cement.
[/list]
I cut all the pipe on the Delta chop saw.
The most expensive item will be the charcoal ignitor at about $10. Total cost under $20.
Some tips to follow:
Dry fit parts before cementing and remove rough edges
When cementing be careful not to let any cement run onto threads.
When cementing, push together and twist a little and hold pressure for about 20 seconds otherwise the two parts want to spring back a little.
If you use a charcoal ignitor, you will have to remove just a portion of the little "dog ears" in order to have it snap in place on the inside of the cap.
Some folks use a can of hair spray as a propellant however it makes things sticky inside. Best to use Gillette spray deodorant in a Copper color can. Can also use Carburetor spray cleaner or Ether starting fluid, but the Gillette seems to be best as it is a combination of several propellants.
AFTER ALL ASSEMBLY DO NOT FIRE FOR 24 HOURS This gives the cement proper time to cure.
Print this for work shop reference[/color]
drewstar:
What is the cumbustable material you use with one of those?
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