3 Simple Ways to
Share What You Make

With Instructables you can share what you make with the world — and tap into an ever-growing community of creative experts.

PhotosPhotos

Share one or more photos of a project, recipe, or whatever you've made, quickly and easily.

Step by StepStep-By-Step

Share your step-by-step photos with text instructions of what you made so others can do it too!

VideoVideo

Share your how-to video. You'll need your embed code from a video site such as YouTube.

The Automatic Silenced Potato Cannon

The Automatic Silenced Potato Cannon
Well after countless trial and errors with a potato gun silencer we finally made one that worked!

This is an instructable for an automatic gas chamber refueling cannon that has a silencer capable of muffling the sound exiting the cannon by almost 75%. When we would shoot this thing without the silencer several neighbors would complain, now no one even comes out of the house to see what the heck just went off in the neighborhood.

Keep in mind that silencer or not, potato cannons can be illegal in your county or city so if you're going to make one, make sure you understand the risks and laws behind having a potato cannon in your residence. Here are a few laws regarding potato cannons in your area.

* Spud guns are illegal to possess by persons under the age of 16 in New York.

* In Glendale, Arizona and Phoenix, Arizona combustion spud guns are not considered firearms.

* In Madison, Wisconsin and in Illinois spud guns are not considered firearms.

* Combustion spud guns are considered firearms in the state of Texas.

* Spud guns are considered firearms in Winter Springs, FL.

* Spud guns are not considered firearms in the state of Maryland.

* Combustion spud guns are not to be manufactured or possessed by those under the age of 16 in the state of California

* Owning or using spud guns in Florida is illegal pursuant to Florida Statute 790.161 Making, possessing, throwing, projecting, placing, or discharging any destructive device or attempt so to do, felony; penalties.[2]

* It has been claimed that the sale of spud guns in the state of Georgia[citation needed] and Wisconsin[citation needed] can be punished with felony charge resulting in a $20,000 fine and up to 15 years in prison.[citation needed] However, reviews of state laws in Georgia have so far indicated no such restrictions. Further review and/or confirmation is pending.

With that said, here is the video for our instructable just in case you don't want to read through the whole paper work :)



 
Remove these adsRemove these ads by Signing Up
 

Step 1Getting all of your supplies

Getting all of your supplies
«
  • 1.jpg
  • 2.jpg
  • 3.jpg
  • 4.jpg
  • 5.jpg
  • 6.jpg
  • 7.jpg
  • 8.jpg
  • 9.jpg
  • last photo ←
»
Alright, here are the supplies you are going to need.

2 segments of 4" PVC pipe. One of the segments will be used as your combustion chamber and it will be 4" thick x16" long The other segment will be used as the silencer and it will be 4" thick x10" long.

You will also need a 2" thick by 45" long piece of PVC pipe. This is going to be the barrel for your gun.

Three 4" thick to 2" thick pipe reducers, these will reduce the size of your pipes down by half. You will use 2 of them for your silencer. and 1 of them for your combustion chamber/barrel attachment.

You need to find a 4" thick end cap with a screw in cover. This is just in case you need to load up the chamber by hand.

Two 2" thick 90 degree elbows. these will be used to connect your chamber to your barrel.

A spark generator, or a grill starter, we got the spark generator from an old lighter we had laying around the house. Worked just as fine as a grill starter.

1/4" by 6" piece of copper pipe, you will use this to inject the fuel into the cannon using the automatic sprayer.

a 1/4" compression coupling, these are used to attach a copper pipe onto an area. We'll show you how to use them. The package comes with instructions on how to use them and what they are for. Just in case you need additional help check the back of the bag :)

lastly you will need an automatic air freshener. You can use a glade air freshener or any other type of automatic release freshener. 

Of course you will need tools too. A drill bit with a 1/4 of an inch drill bit, sand paper, potatoes, and PVC cement.

Anyways, that's enough supplies lets get to building this thing!
« Previous StepDownload PDFView All StepsNext Step »
7 comments
Sep 6, 2011. 5:40 PMcwilks1 says:
A helpful tip for all use eletric tape instead of duck tape, duck tape is flameable and don't ask me how.
Feb 16, 2011. 7:41 PMjj.inc says:
Do you take your end-cap off after every test or how do you get oxygen into your chamber, I have seen some cool guns that have built in fans.
Jan 22, 2011. 6:05 PMLoosewire; SOE Operative says:
So how many shots can you do before the air fresher starts fouling up the spark contacts?
Nov 14, 2010. 1:50 PMPizzapie500 says:
So wait. air freshener is flamable?
Sep 27, 2010. 12:37 PMBillgun says:
I hate how everybody forgets Oklahoma its a main state too

Pro

Get More Out of Instructables

Already have an Account?

close

All Steps Viewing
View all steps of an Instructable on the same page when you're a Pro Member.

Upgrade to Pro today!
145
Followers
41
Author:HM-Innovations(HM-Innovations.com)
We are a group of Engineers, Tinkerers, Designers, Programers, and Nerds ! ---- and Since April 2011 We also have a Cupcake Maker