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Potato Eliminator Two Point O

Built a combustion cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Potato Eliminator Two Point O

Unread postAuthor: SpudStuff » Sat Apr 08, 2006 11:02 pm

Potato Eliminator Two Point O

This is the newly built Potato Eliminator. I haven’t tested it yet. The chamber is an 18 inch long piece of 4 inch shc 40 PVC. On one end I glued a 4 inch female adapter and on the other a 4 inch coupling. In the coupling I glued a 4 inch spigot by 2 inch female thread bushing.
The propane meter is quite simple. Starting from the barrel I have a ¼ inch steel street elbow, a ¼ inch steel close nipple, a 1/4inch by1/2 inch steel coupling, a ½ inch sch 80 PVC close nipple, a ½ inch sch 40 PVC ball valve, a 4 inch long ½ inch sch 80 PVC nipple (this will vary based on volume of chamber), a ½ inch sch 40 PVC ball valve, a ½ inch sch 80 PVC close nipple, a ½ inch sch 40 cap with ¼ inch threads tapped into the top of it, a ¼ inch brass tee with a 1-300 PSI pressure gauge in one side and a ¼ inch brass street elbow in the other side, out of the elbow a ¼ inch by ¼ inch brass hose barb, connected to the barb is a length of braided hose used to hook up toilets, the other end if the hose is clamped to an old propane torch. All the sch 80 nipples are sprinkler risers and are available at any store that sells sprinkler supplies. The propane meter is tapped into the chamber at the end with the cleanout plug.
The other accessories include a chamber short, a BBQ igniter (soon to be replaced with a stun gun), and an under-over adapter for the barrel.
The Under-Over adapter makes the gun easier to handle. It allows for a shorter overall length. To build for a cannon with a 2 inch threaded output from the chamber the parts are as follows, a 2 inch female adapter, a 2 inch slip elbow, a 2 inch slip by female threaded elbow, then your barrel. This is a simple easy addition that works great on any cannon.
The chamber short How-To can be found in the How-To section of this wonderful website.
I estimate the entire cannon cost $80 in parts.

EDIT: the cannon now has on board propane an a chamber fan. the fan makes such a differance it was like going from bang to !!!BOOM!!!
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Attachments
CIMG1271.jpg
chamber View
CIMG1272.jpg
Second Chamber View
CIMG1273.jpg
Igniter
CIMG1274.jpg
Inside The Chamber
CIMG1275.jpg
End Plug
CIMG1276.jpg
Old Propane Torch Head
CIMG1277.jpg
Pressure Guage
CIMG1278.jpg
Propane Meter
CIMG1279.jpg
Over-Under adapter
CIMG1280.jpg
Close Up Of Reduser Bushing
CIMG1282.jpg
CIMG1283.jpg
Top Of Propane Meter
CIMG1284.jpg
Bottom Of Propane Meter
CIMG1285.jpg
Over View of Cannon
CIMG1286.jpg
Rating on Barrel
CIMG2864.jpg
This is the newest Photo.
It is a 2 second exposure after a 10 sec. timer.
The Credit for is photo is my dad.
Last edited by SpudStuff on Sat Apr 29, 2006 12:29 am, edited 2 times in total.
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Unread postAuthor: SpudStuff » Sat Apr 08, 2006 11:02 pm

By the way thats my dog in the last pix
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Unread postAuthor: fred_roux » Sat Apr 08, 2006 11:40 pm

nice launcher. 8)

You should make a barrel support. The barrel looks a bit crooked.
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Unread postAuthor: SpudStuff » Sun Apr 09, 2006 6:17 pm

ya i am waiting to get a redwood 2x8 to make a support to hold the barrel, propane tank, and propane meter
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