auto

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.
User avatar
Rambo
Corporal
Corporal
Posts: 509
Joined: Sun Jan 15, 2006 2:07 pm

Sat Jan 21, 2006 4:40 pm

That's my full auto mini gun. 8)
Attachments
Lady Zi 001.jpg
User avatar
Rambo
Corporal
Corporal
Posts: 509
Joined: Sun Jan 15, 2006 2:07 pm

Sat Jan 21, 2006 4:44 pm

With out the chamber.
Attachments
Lady Zi 002.jpg
Lady Zi 002.jpg
User avatar
Rambo
Corporal
Corporal
Posts: 509
Joined: Sun Jan 15, 2006 2:07 pm

Sat Jan 21, 2006 4:52 pm

I'm sorry for the duble post.It gave me error and....and i didn't know that it won't be a reply, :oops:
User avatar
Urban Ninja
Specialist 2
Specialist 2
Posts: 297
Joined: Sun Jan 01, 2006 5:35 am
Location: Sydney Australia.
Contact:

Sun Jan 22, 2006 7:32 am

Sorry if im being ignorant but I just cannot figure out how it works? Cos it is combustion isnt it?! Nice gun though :D .
User avatar
Rambo
Corporal
Corporal
Posts: 509
Joined: Sun Jan 15, 2006 2:07 pm

Sun Jan 22, 2006 9:25 am

The tube wich is up is the magazine.There are the balls.In the front handle is the ignition(it gives a continius spark write in the comb. chamber), you can see the battery.The pipe coming out of the combustion chamber is for the air.In the camber there are 20ml of alkohol.Whin I push the triger the fuel (not all ofcourse) burns and a ball is fired.Another ball quikly take it's plase.The air already riched :idea: the mixijure and the alkohol ignite's again.And the proces repeats until it run out of air.With 5L of air it can fire about 20-30 I didn't count them....
User avatar
saladtossser
Sergeant 3
Sergeant 3
Posts: 1234
Joined: Sat Mar 26, 2005 10:40 am
Location: Toronto
Contact:

Sun Jan 22, 2006 2:32 pm

simple drop in the chamber design
what kind of pipes are those?
"whoa... I thought pimpmann was black..."-pyromanic13
User avatar
Rambo
Corporal
Corporal
Posts: 509
Joined: Sun Jan 15, 2006 2:07 pm

Sun Jan 22, 2006 4:09 pm

The walls of the pipes are 3mm tick.The gun don't overheat so it's not inportant what is the material.
User avatar
Urban Ninja
Specialist 2
Specialist 2
Posts: 297
Joined: Sun Jan 01, 2006 5:35 am
Location: Sydney Australia.
Contact:

Sun Jan 22, 2006 9:20 pm

Oh right I get it now :D , thats a relly good idea. Any chance of a video? I really want to make one, do you think zippo lighter fluid is alright instead of alcohol :?: . Do you have anything blowing in to the pipe to ventilate it or does it do it naturally? Sorry for all the questions but this design is PERFECT for my thompson gun. Thanks a lot and great design :D :D !
User avatar
Rambo
Corporal
Corporal
Posts: 509
Joined: Sun Jan 15, 2006 2:07 pm

Mon Jan 23, 2006 2:21 am

Ofcourse it's not naturaly ventilated, why else should I insert comprest air in to that shlank coming out of the combastion chamber?.I think that the alkohol is the best fuel because it can be between 7,5% and 37%(for metanol) to ignite.The nossle for the air shuldn't be very big or it may turn in to a rocket motor :D :D .
User avatar
Urban Ninja
Specialist 2
Specialist 2
Posts: 297
Joined: Sun Jan 01, 2006 5:35 am
Location: Sydney Australia.
Contact:

Mon Jan 23, 2006 3:21 am

Thanks a lot. I gave you a ten for being the first combustion auto Ive ever seen. Last question :P what gives it a continuos spark, is it a stungun or is it a homemade device? Thanks! :D .
User avatar
CS
Moderator
Moderator
Posts: 1837
Joined: Fri Feb 18, 2005 5:32 pm
Location: Southern Utah

Donating Members

Mon Jan 23, 2006 3:29 am

Auto-Combustion? If so we need some diagrams, cause I cant see shit in those pics. Rambo I also fixed your posts. You triple posted the gun so I had to delete one and merge the other two, very aggrevating.
User avatar
Rambo
Corporal
Corporal
Posts: 509
Joined: Sun Jan 15, 2006 2:07 pm

Mon Jan 23, 2006 11:33 am

The spark is from a "kotlon"(=cooker or hot plate or brazer i don't know just the right word) ignitor.It is very unrelaible.The spark is big as from a piezo kristal.
I just tried it again, you better don't use in non ventilatad room.Yesterday it didn't wan't to egnite with acetone.
the wires should be tick or during the time they'll become a crap.
darkpyro
Specialist
Specialist
Posts: 133
Joined: Tue Dec 06, 2005 1:25 am

Mon Jan 23, 2006 7:19 pm

okay sounds great but im still lost the pics are cr@p please add diagram or somethin :?
User avatar
Rambo
Corporal
Corporal
Posts: 509
Joined: Sun Jan 15, 2006 2:07 pm

Tue Jan 24, 2006 2:41 am

I hope that's a diagram.
Attachments
Lady Zi 002.JPG
darkpyro
Specialist
Specialist
Posts: 133
Joined: Tue Dec 06, 2005 1:25 am

Thu Jan 26, 2006 6:12 am

nice good diagram but do you just have alchohol sitting in the bottom and hope it dosn't all light and blow up???
Post Reply