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 75 users online :: 5 registered, 0 hidden and 70 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Is this very safe?

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
Sponsored 

How dangerous is this?

Look's safe to me (as long as used correctly)
0
No votes
ehhh, should be ok?
2
12%
RUN!
15
88%
 
Total votes : 17
  • Author
    Message

Is this very safe?

Unread postAuthor: Paradox » Sun Sep 14, 2008 12:48 am

Hey guys new to the site here... i built my first spud gun last summer and i have had a lot of fun with it! i would like to build a new one sometime,
especially after all the new ideas i have from everyone here!

I have made a propane/oxy spudgun... i am just using PVC... now people have told me... and am starting to believe that it is more dangerous than i had originally planned... now i don't think that i use the optimal mixture of propane and oxygen, but still will make one heck of a boom. So i am
wondering how dangerous you think think this is on a scale of 1 - 10. I have not had any problems or any reasons to think it is unsafe... nothing has broken or shown weakness.. but i could understand.

And by no means is this a PRETTY spud gun... trust me i know lol, and i went a little tape happy, but it still shoots stuff pretty darn fast for sure, ha ha.



Image
Image
Image


and here are 2 video's i made using it.

http://www.youtube.com/watch?v=oT7wzImNR-E
http://www.youtube.com/watch?v=Z4r8fJtQ9-M
  • 0


Paradox
Private
Private
 
Posts: 2
Joined: Sat Sep 13, 2008 11:57 pm
Reputation: 0

Unread postAuthor: Insomniac » Sun Sep 14, 2008 2:02 am

Umm.. that thing scares me :shock: If you were to get the right amount of oxy and propane, well, I doubt it would hold up. Especially since you have DWV (not made for pressure, eg drainage pipe) fittings on there. Stop using it with oxygen, the air and propane mix should be quite powerful enough. If you really want an oxy/propane gun, make it a lot smaller, and make it out of metal.
  • 0

I wonder how much deeper the ocean would be without sponges.
Right now I'm having amnesia and deja vu at the same time. I think I've forgotten this before.

Add me on msn!!! insomniac-55@hotmail.com
User avatar
Insomniac
Major General
Major General
 
Posts: 1297
Joined: Mon Dec 18, 2006 3:47 pm
Location: Australia
Country: Australia (au)
Reputation: 0

Unread postAuthor: PCGUY » Sun Sep 14, 2008 3:28 am

I have to chime in on this one.

RUN.

You have built something that is FAR too dangerous to even think of operating. STOP using the oxygen!

I'm glad your alive.
  • 0

Yes, I am the guy that owns & operates SpudFiles (along with our extremely helpful moderators).
User avatar
PCGUY
Site Admin
Site Admin
 
Posts: 1576
Joined: Wed Aug 18, 2004 10:54 pm
Location: Illinois
Country: United States (us)
Reputation: 19

Unread postAuthor: frankrede » Sun Sep 14, 2008 3:32 am

Nice pipebomb!
  • 0

Current project: Afghanistan deployment
User avatar
frankrede
Lieutenant General
Lieutenant General
 
Posts: 3220
Joined: Thu Jul 20, 2006 9:47 pm
Reputation: 0

Unread postAuthor: Paradox » Sun Sep 14, 2008 7:46 am

lol thanks for your input- i think i am going to have to put this one to rest while i'm still ahead! ha ha.
  • 0


Paradox
Private
Private
 
Posts: 2
Joined: Sat Sep 13, 2008 11:57 pm
Reputation: 0

Unread postAuthor: Carlman » Sun Sep 14, 2008 8:16 am

your health insurance must cost a pretty penny aye?!
  • 0

Image
Aussie spudders unite!!
User avatar
Carlman
Major General
Major General
 
Posts: 1618
Joined: Sat Nov 24, 2007 1:18 am
Location: Western Australia
Reputation: 0

Unread postAuthor: marpat » Sun Sep 14, 2008 8:43 am

i think all the electrical tape scared me away at firsyt because it was so ugly and then i saw the DWV bell reducer and i actually felt an instinct to make myself as small of a target as possible
NOT SAFE!
  • 0

User avatar
marpat
Corporal
Corporal
 
Posts: 75
Joined: Thu Jun 05, 2008 9:31 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: starman » Sun Sep 14, 2008 9:31 am

Man that's one frankenstein of a spud gun... :wink: If you are extremely careful with your oxygen use it could be ok, but, I don't see enough fail safe systems on there to keep you from over loading a fuel/oxy charge.

Delete the oxygen, add an air vent and a fan and it should be OK.
  • 0

User avatar
starman
Donating Moderator
Donating Moderator
 
Posts: 3041
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC
Reputation: 0

Unread postAuthor: psycix » Sun Sep 14, 2008 3:34 pm

Combustions using DWV fittings are generally accepted.
Oxygen enriched mixtures in SCH80 or thicker PVC, using remote ignition, are somewhat OK.

Oxygen enriched mixtures in PVC with DWV is a big no-no.
11 points for dangerous on the scale from 1 to 10.

Solutions (pick one):
-No oxygen
-Use metal instead of PVC
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Unread postAuthor: nibbler125 » Sun Sep 14, 2008 7:07 pm

it needs to be retired and don't use oxygen or else you will eventually have a pipebomb. i like the pvc design but follow the one big rule don't USE TAPE ON POTATO GUNS. use a hoseclamp to hold down the propane bottle. the oxygen is just asking for trouble. and use a wooden block to hold the combustion chamber and barrel and glue them.
  • 0


nibbler125
Sergeant
Sergeant
 
Posts: 80
Joined: Sat Jun 07, 2008 10:42 am
Reputation: 6

Unread postAuthor: mark.f » Sun Sep 14, 2008 7:22 pm

I just say remove the oxygen input and add a normal air vent. No need to completely retire it.
  • 0

User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3465
Joined: Sat May 06, 2006 11:18 am
Country: United States (us)
Reputation: 21

Unread postAuthor: rp181 » Sun Sep 14, 2008 7:44 pm

you should just use larger dia PVC or hose clamps to hold the tanks.
  • 0

User avatar
rp181
Brigadier General
Brigadier General
 
Posts: 1090
Joined: Thu Dec 13, 2007 8:47 pm
Reputation: 0

Unread postAuthor: Mr.Sandman » Sun Sep 14, 2008 8:27 pm

can i be included in your will? thats a bad idea esey you should run or as we mexicans like to say: aye dios mio corre senor corre!
  • 0

Yeah, it's that important.
User avatar
Mr.Sandman
Donating Member
Donating Member
 
Posts: 762
Joined: Fri Mar 28, 2008 9:10 am
Country: Antarctica (aq)
Reputation: 0

Unread postAuthor: Not_Again » Sun Sep 14, 2008 8:57 pm

Wow, impressive design.

As to your question...

"That's a big NO on Jimmy..."
  • 0

User avatar
Not_Again
Private
Private
 
Posts: 9
Joined: Sun Sep 14, 2008 10:29 am
Reputation: 0

Unread postAuthor: CasinoVanart » Sun Sep 14, 2008 9:25 pm

You so could have entered the ghetto contest that was here recently, you would have been in with a big chance!! :P

I would not really recommend this but if you want to keep using the oxy make a remote (really remote) ignition for it and keep well back from it when you fire. Oh yeah i didn't see any on your cannon but remember that oxy and oil/grease don't mix. :wink:
  • 0

User avatar
CasinoVanart
1st Lieutenant
1st Lieutenant
 
Posts: 281
Joined: Wed Jul 30, 2008 1:10 am
Reputation: 0

Next

Return to Combustion Cannon Discussion

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'