Impromtu Ghetto Contest (12 Entries!)

[Labtecpower]

*Kathode

It is a dutch diagram, so the spelling is correct


On topic:

Could we make a rule that the cannon has to be able to shoot? with adding a vid or something you could prove it.

[jakethebeast]

that was actually in my mind

[mark.f]

Could we make a rule that the cannon has to be able to shoot? with adding a vid or something you could prove it.

Sounds like a good idea. Didn't want to add too many rules, but that should definitely be one of them. I'll edit my post with a video sometime later on tonight.

[Technician1002]

Presenting the Biohazard.

My trash collection is way too vast so to narrow it down and limit the selection, I chose a theme. Medical supplies only. All disposable as biohazard waste.

Presenting my Ghetto contest build and my first combustion.



It features metered fuel, clear chamber, stainless steel electrodes with insulated adjustment handles, small size, pistol grip, snub nose barrel, and all materials obtained free.

The fuel port on the breech is the tip off the syringe barrel.

Pardon me for not posting a video of this on my Youtube Channel. Due to the build materials, I'd rather not post it on Youtube.
2nd fire;

[mark.f]

Neat! Too bad you don't have any magnetic stirrers... chamber fan!

As to the video, just a still shot of it firing would be good. No hurry, though, still have 6 days.

On another note, do you think we should use a judging scale points style like the official Spudfiles' contests? Or should we just do a poll? I think a poll would be best, but you guys have put forth a good amount of effort in getting this thing off the ground so far, so I'd like your opinions.

[al-xg]

So here is mine, with a working muzzle brake ! (made from 12 separate parts :O)



Made from two drink bottles, electrical tape and cardboard. (oh also two needles, and a few strands of ATA ribbon)
Projectile is rolled up toilet paper.

As you will see, when I first tested the canon, it became obvious that some sort of recoil mitigating system would be required

[youtube][/youtube]

So it seems centre ignition isn't the best solution with light projectiles.
Also the flame front acceleration through the reduction is impressive.

So err, I'll call it "Muzzle Breaks"

[Labtecpower]

Here is my video!

[youtube][/youtube]

No fancy music here.

For fueling, skip to 21 seconds. The 3 ml of butane is not included

For judgement, I would like the points style. In that way people think more before making their judgement.

[jakethebeast]

ill post a video tomorrow, i dont wanna shoot this inside anymore

[jrrdw]

One thing I'd like to add, to be considered a cannon it has to shoot more then once.

[Labtecpower]

No paper bag combustions

Luckily my gun is within the rules.

I had to stop shooting because the other people in my house got angry
Hydrogen/oxygen makes quite a lot of noise

[jakethebeast]

haha i see i see

[mark.f]

One thing I'd like to add, to be considered a cannon it has to shoot more then once.

Edited the rules to state that the cannon should hold together.

No more rules!

Nice videos, you two. Mine's coming in a bit...

[mark.f]

Bump for video confirmation.

[youtube][/youtube]

The bottle mounting screws are not required with light projectiles (like this paper wad), but without them when firing things like golfballs or at some point spuds, you are in for a bad day. 8)

No fancy music here, either. Damn MOV format makes it easier for me to edit videos with a simple dubber since WMM doesn't like MOV files, and about the extent of what I can do as far as "effects" are slow motion shots, and I have to edit the audio separate if I want to include slo-mo audio...

Yeah, it's a pain.

[clemsonguy1125]

My ghetto pneumatic. The chamber is made from two balloons, one inside of another. To pressurize it, you inflate it through the barrel like a normal ballon. You then twist off the balloons load a projectile and let go of the balloons. Has about a 40 foot range

[mark.f]

Neat. I don't think you need to verify this works, also, but what kind of ammunition do you use?