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.
-
Rambo
- Corporal

- Posts: 509
- Joined: Sun Jan 15, 2006 2:07 pm
Sun Feb 12, 2006 6:48 am
This is my new mini.It has volume of 0.5L.The comb. chamber is from aluminium.It uses oxigen

and petrol as fuel.The small brown bottle is the O2 generator.
-
Attachments
-

-

-
drac
- Corporal 4


- Posts: 899
- Joined: Sun Apr 24, 2005 8:56 am
- Location: Avon, NY
- Been thanked: 2 times
Sun Feb 12, 2006 10:07 am
Me likes. I remember a giant gun that a member made before that uses O2 and Mapp, I'll find the link if I get the time.
But nice gun, just be careful with it.
-
drac
- Corporal 4


- Posts: 899
- Joined: Sun Apr 24, 2005 8:56 am
- Location: Avon, NY
- Been thanked: 2 times
Sun Feb 12, 2006 11:55 am
So how exactely does the O2 generator work? H2O2 + KMnO3?
A couple more pictures would be nice.
-
Rambo
- Corporal

- Posts: 509
- Joined: Sun Jan 15, 2006 2:07 pm
-
K40T1C
- Private 4

- Posts: 97
- Joined: Sun Jan 29, 2006 11:18 pm
- Location: Cupertino, California
Sun Feb 12, 2006 11:20 pm
first of all i really like the holder for the gun... secondly, how do you guys get magnesium permanganate, i know how to get the hydrogen peroxidde but i dont think there are any chemical stores near me so yeah...
-
Rambo
- Corporal

- Posts: 509
- Joined: Sun Jan 15, 2006 2:07 pm
Mon Feb 13, 2006 2:51 am
Actioaly I was too lazy to make some handle and the piese of st. is in the same shape I get it.For catalisator you may use MnO2 , FeCl3 , Ag.KMnO4=KALII PERMANGANS
-
FiveseveN
- Specialist 3

- Posts: 337
- Joined: Fri Oct 14, 2005 5:48 am
- Location: Nowhere
-
Contact:
Mon Feb 13, 2006 11:30 am
MnO2 is the black stuff (not the carbon anode, of course) in batteries. Just take a cheap alkaline battery apart.
-
Rambo
- Corporal

- Posts: 509
- Joined: Sun Jan 15, 2006 2:07 pm
Mon Feb 13, 2006 12:00 pm
There are cheap ciniese batteries that have big enternal resistense, but I didn't try them.Just reminding that you MUST HAVE GLASES WHEN OPERATING with H2O2.