my spud gun wont work

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
stemargia
Private
Private
Posts: 4
Joined: Sun Aug 10, 2008 3:50 pm

Sun Aug 10, 2008 4:00 pm

i have a spud gun of pvc the combution chamber is about 25 centimeters and my barrel is about 45-50 centimeters
But the question is if i put hairspray or deo in my chamber and i close it and i press button to ignite(bbq igniter) nothing happens but when i open the end-cap and i ignite fire comes out of the chamber . Is it my fuel of what else i dont know .
Last edited by stemargia on Sun Aug 10, 2008 4:08 pm, edited 2 times in total.
User avatar
Hubb
First Sergeant 2
First Sergeant 2
Posts: 2390
Joined: Mon May 28, 2007 8:39 am
Location: South Georgia
Contact:

Sun Aug 10, 2008 4:04 pm

First off. Help us. Please try to have better grammar.

As far as your problem. You're probably putting too much fuel in the chamber.
User avatar
SpudFarm
First Sergeant 3
First Sergeant 3
Posts: 2571
Joined: Sat Nov 04, 2006 9:39 am
Location: Norway Trondheim area

Donating Members

Sun Aug 10, 2008 4:12 pm

that is MUCH better.. as others have said - you use to much fuel. try to spray the same amount of fuel in and blow carefully in the chamber afew times before you cap it up.
"Made in France"
- A spud gun insurance.
stemargia
Private
Private
Posts: 4
Joined: Sun Aug 10, 2008 3:50 pm

Sun Aug 10, 2008 4:14 pm

SpudFarm wrote:that is MUCH better.. as others have said - you use to much fuel. try to spray the same amount of fuel in and blow carefully in the chamber afew times before you cap it up.
Is 2 sec enouf for an ignition???
User avatar
SpudFarm
First Sergeant 3
First Sergeant 3
Posts: 2571
Joined: Sat Nov 04, 2006 9:39 am
Location: Norway Trondheim area

Donating Members

Sun Aug 10, 2008 4:30 pm

hmm, depends on you chamber.

what i do on minis (HARD to fuel) is to spray MUUUUUCH hair spray on the chamber walls and everywhere so i get a good liquid layer of hairspray, then you ignite it while cap is of and air out for a minute. then you just put your cap on and wait in like 10seconds and shoot.
"Made in France"
- A spud gun insurance.
User avatar
jrrdw
Moderator
Moderator
United States of America
Posts: 6572
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Has thanked: 39 times
Been thanked: 22 times
Contact:

Donating Members

Sun Aug 10, 2008 4:31 pm

Experiment with it, thats part of the fun. 1st try 1 second and see how that works, then 2 seconds ect.....

Let us know how it goes.

As for the rest of you leave the moderating to us moderators!

Welcome to Spudfiles.
stemargia
Private
Private
Posts: 4
Joined: Sun Aug 10, 2008 3:50 pm

Sun Aug 10, 2008 4:38 pm

owkey i will tell it if it worked
nivekatoz
Specialist 2
Specialist 2
Posts: 237
Joined: Sat Nov 25, 2006 7:05 pm

Sun Aug 10, 2008 6:22 pm

Im no expert on combustions but if it were me I would use propane or starter fluid spray (ETHER) Its more flammable and less sticky.
User avatar
Darkside 6ix
Specialist 2
Specialist 2
Posts: 298
Joined: Sun Apr 30, 2006 6:53 am
Location: United States

Sun Aug 10, 2008 8:26 pm

Hmm, sounds like you are using too much fuel. Try spraying one second less that what you were spraying. So lets say you were spraying 5 seconds of axe. Then try 4 seconds. If that doesnt work try 3 seconds, etc.

Please try and use better grammar. Nobody likes it when someone types ZOOMMFGGG I NEEDZ HELPpP!!!!!! HAXORING MY CANNON WONT WORK PLZ HELP!!!!!! (especially if that someone is a noob) just try and give your post some thought before you actually type it. :roll:
"Dude, if all of the people on spudfiles got together with all of their cannons, we could take over china"
User avatar
rp181
Sergeant
Sergeant
Posts: 1090
Joined: Thu Dec 13, 2007 8:47 pm
Contact:

Sun Aug 10, 2008 8:27 pm

try holding the can upside down and spraying, in some, only the aerosol comes out with no product.
User avatar
daxspudder
Specialist 3
Specialist 3
Posts: 300
Joined: Thu Apr 24, 2008 10:22 pm

Mon Aug 11, 2008 12:50 am

the real problem is that your depleting the oxygen content of your chamber, meaning there isn't enough O2 to ignite the mixture. Do not spray so much, if you search this site you'll find many more answers to similar problems... and when it comes to ether, i.e. carburetor cleaner, it is EXTREMELY easy to use too much fuel, usually a .5 second spray is more than enough. Use less fuel, and FYI more liquid, despite previous posts, is completely irrelevant. Best of luck to you.
"<I>For dare to be peace, I have to keep at it everyday, da Man doesn't take days off so neither can I</I>" -<B>Bob Marley</B>, day before a performance, a day after being shot in the chest. "<I>If you are the big, big tree, we are the small axe, ready to cut you down!</I>" -Bob again :brave:
User avatar
Necrosis
Specialist 2
Specialist 2
Posts: 239
Joined: Tue Jul 03, 2007 10:03 am

Mon Aug 11, 2008 7:10 am

How'd he get that WANTED thingy from the classifieds?
Allthough we may be the most intelligent creature on this planet, we are also the most inconsistent.
To find peace within our existence we often create a logic that endangers our lives.
stemargia
Private
Private
Posts: 4
Joined: Sun Aug 10, 2008 3:50 pm

Tue Aug 12, 2008 11:57 am

Thanx guys it works perfect SPUDGUN is SOSOSOSOSOSO cool!!
with hairspray i shoot the patato about 200-300 metres
User avatar
Ragnarok
Captain
Captain
Posts: 5401
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK

Tue Aug 12, 2008 1:00 pm

stemargia wrote:with hairspray i shoot the patato about 200-300 metres
Hmm...

That sounds a rather generous estimate. I suspect you're suffering from ORES (Overgenerous range estimation syndrome), which leads most inexperienced range estimators to think most ranges are usually at least twice as far as they actually are, if not more.

Think more like half those distances and you're probably in the right ballpark.
Does that thing kinda look like a big cat to you?
ROCK SOLID
Private 2
Private 2
Posts: 32
Joined: Wed Mar 05, 2008 2:40 am
Location: Australia, QLD

Tue Aug 12, 2008 4:54 pm

what is the length of the barrel
Post Reply