The Best Cannon On This Website.

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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wangpushups
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Tue Nov 13, 2007 1:21 am

Before everyone gets pissed at the title, i'm just kidding... Here are the specs...

1.09:1 - C:B Ratio (I'm in the process of getting an 8 foot barrel for a 0.8:1 Ratio with a tripod probably)

3" X 13" Chamber = 2675 ml. (Double Sleeved)
1.5" X 6' Barrel = 2450 ml.
Laser sight with on/off trigger
Cam locks
Corrigated tubing to conceal the wiring
Onboard propane w/regulator, 100 psi guage and 3/8" meter = 37 ml.
65K Stun gun ignition (incased in the project box)
3 Gap spark strip
3" - 12 Volt chamber fan (Powered by 9 Volts)
(2) 1.5" Tee's for support block



This is how I get the barrel off.
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Back.
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Front.
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Custom laser housing. (To sight the laser, I just tighten the metal clamp)
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Perfect size. Mobile and comfortable.
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A different angle.
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Control box and regulator.
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Me again.
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Last edited by wangpushups on Mon Jan 07, 2008 8:57 pm, edited 13 times in total.
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hi
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Tue Nov 13, 2007 1:26 am

not a bad looking gun if i may say so myself. a paint job wouldn't do it any harm.
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Killjoy
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Tue Nov 13, 2007 1:32 am

Damn, looks good. I love the custom laser housing for some reason. Anyways, nice.
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frankrede
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Tue Nov 13, 2007 1:57 am

NICE!
I like it
Looks fun to shoot'
*clap, clap clap*
I look forward to seeing your guns in the future.
Current project: Afghanistan deployment
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LikimysCrotchus5
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Tue Nov 13, 2007 2:10 am

Very clean and nice, i wish to be successful as you and build my first combustion like yours, great job, now fire her up!!! :D
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wangpushups
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Tue Nov 13, 2007 2:10 am

I plan on painting it but I was too impatient to get these pics on here. Damage pics and video coming soon...
The wiring job with the electrical tape for the laser is just temporary, so it looks crappy right now.
Last edited by wangpushups on Tue Nov 13, 2007 2:32 am, edited 1 time in total.
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Tue Nov 13, 2007 2:15 am

Very nice, as said a paint job would be cool, as would damage pics- any recoil from this puppy?
Nice job Wang :)
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wangpushups
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Tue Nov 13, 2007 2:22 am

Yeah, it's got some recoil but not as much as I thought. With the 6 foot barrel I can shoot something fairly accurate from 100 yards away. It's VERY powerful and i can't believe how quiet it is for all the power it has so far.
When I add the 8 foot barrel (for the .8:1 ratio), it'll be way better than it is now and I can't even begin to imagine that.
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Tue Nov 13, 2007 2:32 am

You seem to have hit the "sweet spot" in regards to C:B ratio- that would explain the low noise-Again sweet gun man :P
America, the greatest gangster of all time. With 200 million odd foot soldiers at it's whim and call.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.
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wangpushups
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Tue Nov 13, 2007 2:38 am

Nice. Thanks, it took me almost a month and a half of trail and error to get all this finished perfectly. My first one had a 4" X 12" chamber because I was going for a beast but it all weighed about 50-60 lbs so I decided to retire it and start over with a 3" chamber so i'm glad I did that.
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wangpushups
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Wed Nov 14, 2007 1:34 am

I'm thinking about making it a hinged support system. Kinda like keith's propane injected gun.
Last edited by wangpushups on Wed Nov 14, 2007 7:07 am, edited 1 time in total.
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mark.f
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Wed Nov 14, 2007 6:44 am

Nice looking gun. Does your laser sight adjust for windage? I imagine a screw threaded through one side of the housing with a spring inside the other against the laser would work well. It'd be like those old WWII scopes that were externally adjusted. :D

As for the hinged support system, I'd say if you're going for breech loading I'd improve the fit and slide between the tee support and the barrel. With a 1-1/2" barrel, a sliver of 2" pipe inside a 2" tee support with some felt inside it would work well.
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wangpushups
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Sun Nov 18, 2007 6:54 am

I just got my 8 foot barrel on there and double sleaved my handles. It looks so nice since i did that. I'm painting it sometime this week and posting newer pics, also I got a few new vids for it.
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DannyGlover666
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Thu Nov 22, 2007 12:20 pm

WOW THATS A SWEET GUN MAN!!!
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wangpushups
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Fri Nov 23, 2007 7:49 am

New vids are up right now, and thanks danny i know its sweet.
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