Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 16 users online :: 5 registered, 0 hidden and 11 guests


Most users ever online was 101 on Fri Nov 22, 2013 4:13 pm

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, PeteS based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Impromtu Ghetto Contest (12 Entries!)

Comments, Suggestions, Questions, anything to do with the website or community it's self. This is a place to express thoughts about making this community better.
Sponsored 
  • Author
    Message

Unread postAuthor: Labtecpower » Tue Apr 26, 2011 11:58 am

*Kathode

It is a dutch diagram, so the spelling is correct :D


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.
  • 0

"ñøw mÿ šįg šüçkś!"
User avatar
Labtecpower
Brigadier General
Brigadier General
 
Posts: 1244
Joined: Sat Feb 20, 2010 6:38 am
Location: Herb Island
Reputation: 7

Unread postAuthor: jakethebeast » Tue Apr 26, 2011 12:00 pm

that was actually in my mind
  • 0

User avatar
jakethebeast
Brigadier General
Brigadier General
 
Posts: 918
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave
Country: Finland (fi)
Reputation: 8

Unread postAuthor: mark.f » Tue Apr 26, 2011 12:03 pm

Labtecpower wrote: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.
  • 0

WIP: unholy mixture of electronics and combustion.
User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3269
Joined: Sat May 06, 2006 11:18 am
Location: Louisiana
Country: United States (us)
Reputation: 13

The Biohazard build.

Unread postAuthor: Technician1002 » Tue Apr 26, 2011 12:22 pm

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.

Image

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;
Image
  • 0

Attachments
P4260125a.JPG
Hazardous materials include an expired date catheter, a specimen sample jar, hypodermic needles, single use syringes, and the contaminated left over roll of tape.
P4260126a.JPG
To be true to form for a Ghetto build the construction is performed with a scalpel and not power tools..
P4260129a.JPG
Finished and ready for the fuel and an old lighter for the ignition.
P4260130a.JPG
Close up of the needles used. They are blunt and large size for refilling inkjet cartridges.
P4260130a.JPG (19.8 KiB) Viewed 536 times
P4260127a.JPG
Barrel installation detail before the tape was added.
Last edited by Technician1002 on Wed May 04, 2011 3:12 am, edited 4 times in total.
User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5120
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 8

Unread postAuthor: mark.f » Tue Apr 26, 2011 1:35 pm

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

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

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.
  • 0

WIP: unholy mixture of electronics and combustion.
User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3269
Joined: Sat May 06, 2006 11:18 am
Location: Louisiana
Country: United States (us)
Reputation: 13

Unread postAuthor: al-xg » Tue Apr 26, 2011 1:44 pm

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

Image
Image
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]http://www.youtube.com/watch?v=xHybwqJkeEw[/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"
  • 0

Last edited by al-xg on Tue Apr 26, 2011 3:14 pm, edited 2 times in total.
User avatar
al-xg
Colonel
Colonel
 
Posts: 643
Joined: Fri Jan 19, 2007 12:29 pm
Reputation: 0

Unread postAuthor: Labtecpower » Tue Apr 26, 2011 1:49 pm

Here is my video!

[youtube]http://www.youtube.com/watch?v=u66EhMcObnU[/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.
  • 0

"ñøw mÿ šįg šüçkś!"
User avatar
Labtecpower
Brigadier General
Brigadier General
 
Posts: 1244
Joined: Sat Feb 20, 2010 6:38 am
Location: Herb Island
Reputation: 7

Sponsored

Sponsor
 


Unread postAuthor: jakethebeast » Tue Apr 26, 2011 2:12 pm

ill post a video tomorrow, i dont wanna shoot this inside anymore :D
  • 0

User avatar
jakethebeast
Brigadier General
Brigadier General
 
Posts: 918
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave
Country: Finland (fi)
Reputation: 8

Unread postAuthor: jrrdw » Tue Apr 26, 2011 2:29 pm

One thing I'd like to add, to be considered a cannon it has to shoot more then once.
  • 0

Nice new forum, thanks PCGUY!
Labtecpower is my microwave hero!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6235
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 17

Unread postAuthor: Labtecpower » Tue Apr 26, 2011 2:41 pm

No paper bag combustions :D

Luckily my gun is within the rules.

I had to stop shooting because the other people in my house got angry :roll:
Hydrogen/oxygen makes quite a lot of noise :D
  • 0

Last edited by Labtecpower on Tue Sep 13, 2011 12:48 pm, edited 1 time in total.
"ñøw mÿ šįg šüçkś!"
User avatar
Labtecpower
Brigadier General
Brigadier General
 
Posts: 1244
Joined: Sat Feb 20, 2010 6:38 am
Location: Herb Island
Reputation: 7

Unread postAuthor: jakethebeast » Tue Apr 26, 2011 3:20 pm

haha i see i see :D
  • 0

User avatar
jakethebeast
Brigadier General
Brigadier General
 
Posts: 918
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave
Country: Finland (fi)
Reputation: 8

Unread postAuthor: mark.f » Tue Apr 26, 2011 3:36 pm

jrrdw wrote: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...
  • 0

WIP: unholy mixture of electronics and combustion.
User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3269
Joined: Sat May 06, 2006 11:18 am
Location: Louisiana
Country: United States (us)
Reputation: 13

Unread postAuthor: mark.f » Tue Apr 26, 2011 4:15 pm

Bump for video confirmation.

[youtube]http://www.youtube.com/watch?v=a6B4ZzahzKA[/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.
  • 0

WIP: unholy mixture of electronics and combustion.
User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3269
Joined: Sat May 06, 2006 11:18 am
Location: Louisiana
Country: United States (us)
Reputation: 13

Unread postAuthor: clemsonguy1125 » Tue Apr 26, 2011 4:32 pm

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
  • 0

Attachments
110426-172711.jpg
User avatar
clemsonguy1125
Major General
Major General
 
Posts: 1485
Joined: Tue Jul 21, 2009 4:00 pm
Location: East Coast
Reputation: 1

Unread postAuthor: mark.f » Tue Apr 26, 2011 4:44 pm

Neat. I don't think you need to verify this works, also, but what kind of ammunition do you use?
  • 0

WIP: unholy mixture of electronics and combustion.
User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3269
Joined: Sat May 06, 2006 11:18 am
Location: Louisiana
Country: United States (us)
Reputation: 13

PreviousNext

Return to Website Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, PeteS

Reputation System ©'