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.
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natas
- Specialist

- Posts: 122
- Joined: Mon Feb 27, 2012 6:02 pm
Sun Apr 15, 2012 3:04 am
guess ill just stick to the plan, and do finetuning when the cannon is up and running.
My calculations are :
chamber: 5700ml x 0.042= 239.4ml
measuringpipe: 239.4ml at 3bar = 79.8ml
so im trying to make my new pipe as close to 80ml as possible
thnx alot for all your inputs

it really helps to get feedback for a first timer

Last edited by
natas on Sun Apr 15, 2012 2:21 pm, edited 1 time in total.
To make dreams come true, u must wake up.
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natas
- Specialist

- Posts: 122
- Joined: Mon Feb 27, 2012 6:02 pm
Sun Apr 15, 2012 5:47 am
I got this idea of using a old panasonic drill as handle for my cannon. I get a ok handle, and a rechargeable battery
Making room for the "trigger" micro switch
Blue Leds to indicate when the fan is running
Red Leds to indicate armed trigger
overall wiev of the handle, with the switches on the side for the ignitor and fan.
will come back with more soon

To make dreams come true, u must wake up.
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natas
- Specialist

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- Joined: Mon Feb 27, 2012 6:02 pm
Sun Apr 15, 2012 3:12 pm
they have been considered

i actually have two of those switches laying on my shelf after a NOS project on one of my old cars (red ones, not carbon). but i found them too big for my handle

To make dreams come true, u must wake up.
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natas
- Specialist

- Posts: 122
- Joined: Mon Feb 27, 2012 6:02 pm
Tue Apr 17, 2012 5:29 am
Ha ha ha.. just did a pressure test on the meetering system, the regulator is leaking gass all over, and the two gauges differ 1 bar !!!.. lol..
Better get me a quality ones...
To make dreams come true, u must wake up.
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natas
- Specialist

- Posts: 122
- Joined: Mon Feb 27, 2012 6:02 pm
Sat Apr 21, 2012 1:24 pm
replaced the cheap regulator and gauges with kickass quality regulator, and oilfilled gauges, high-end accurate stuff. did a dry testfire today, and was rewarded with a loud sharp bang with almost no flames

... cant wait to get this babe finnished

.
To make dreams come true, u must wake up.
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natas
- Specialist

- Posts: 122
- Joined: Mon Feb 27, 2012 6:02 pm
Tue Apr 24, 2012 4:59 pm
Ok.. so here is the new gauges and regulator, works like a dream !!
Trigger grip mounted with safety switches, and rechargeable battery
Now I only need to get the brackets for the gas tank done, and the spud is more or less finished
Here im working on the brackets for the gas tank holder, old scool style, CNC version 0.1 beta

To make dreams come true, u must wake up.
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natas
- Specialist

- Posts: 122
- Joined: Mon Feb 27, 2012 6:02 pm
Tue Apr 24, 2012 6:53 pm
BTW : the things i post now... should they rather be in the showcase area ?
or is that just for "finished" spudguns ?
and or is it just irritating that i post progress at all ?
im just asking since im new here..
To make dreams come true, u must wake up.
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warhead052
- Staff Sergeant 3

- Posts: 1769
- Joined: Mon Mar 21, 2011 5:41 pm
Tue Apr 24, 2012 10:37 pm
Nah, these progress reports are pretty cool. Save the showcase for when its complete. Looks really good! Can't wait to see more from you!
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jackssmirkingrevenge
- Five Star General

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Wed Apr 25, 2012 2:29 am
Moonbogg wrote:Did you bolt the camlock to the PCV wall?
I think that's the "standard" attachment from Ultimate Spudgun.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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natas
- Specialist

- Posts: 122
- Joined: Mon Feb 27, 2012 6:02 pm
Wed Apr 25, 2012 3:54 am
Moonbogg, its the utimate spudgun attachment.. if it works, dont fix it:-)
i have done a more or less standard project, and copied other peeps working cannons for my first project, to get a understanding of how things work. guess ill start experimenting with my own sollutions on my next one

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Crna Legija
- First Sergeant 2

- Posts: 2333
- Joined: Sun Jul 20, 2008 5:14 am
- Location: australia
Wed Apr 25, 2012 4:32 am
lol I wouldn't say that's standard its defiantly one on the best combustions on the files, especially for a first. Great work!
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson
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