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Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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Unread postAuthor: battlelava » Thu Apr 19, 2012 1:21 pm

warhead052 wrote:If you had a 2.5" barrel, you could shoot tennis balls. Those don't hurt too badly when they come in at an angle. If its full on, I don't ever want to experience that again, but at an angle its not so bad because it slows down enough.


This is the biggest pipe i got =/ I haven't seen any 2 1/2" in any local stores I wish i could shoot tennis ball's, i got a ton of them and there easy to reuse
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Unread postAuthor: warhead052 » Thu Apr 19, 2012 1:28 pm

Yeah, its hard to find... Just try expanding your spark gap a bit, that should work, and if it doesn't its your fuel mixture.
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Unread postAuthor: battlelava » Thu Apr 19, 2012 1:35 pm

warhead052 wrote:Yeah, its hard to find... Just try expanding your spark gap a bit, that should work, and if it doesn't its your fuel mixture.


Yep i adjusted the gap [youtube]http://www.youtube.com/watch?v=RdfpjJzyJgA[/youtube]

Edit: it always jumps from tip of one to the threads closest of the other, doesn't wander all over the place so i guess thats a plus
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Unread postAuthor: warhead052 » Thu Apr 19, 2012 1:42 pm

Ok, I would say try it with fuel now. It looks like it should work, so I don't see why not.
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Unread postAuthor: battlelava » Thu Apr 19, 2012 1:43 pm

Still can't try it out until next sunday. I'm going to airport for italy in 17 minutes
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Unread postAuthor: warhead052 » Thu Apr 19, 2012 1:44 pm

Alright then, have fun in italy. I will see if I can think of any other possible problems.
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Unread postAuthor: battlelava » Thu Apr 19, 2012 1:45 pm

warhead052 wrote:Alright then, have fun in italy. I will see if I can think of any other possible problems.


I get 11 days to think about ammo idea's and drink wine lol probably not a good combo but w.e
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Unread postAuthor: battlelava » Thu Apr 19, 2012 4:47 pm

Sitting in a terminal sucks. Thinking about my untested cannon is going to bother me the whole ride
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Unread postAuthor: warhead052 » Thu Apr 19, 2012 6:45 pm

I would be more worried about enlisting... 'Specially for the marines....
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Unread postAuthor: Gun Freak » Thu Apr 19, 2012 7:28 pm

warhead052 wrote:I would be more worried about enlisting... 'Specially for the marines....

This is coming from the kid who said he wants to be in the military...
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Unread postAuthor: battlelava » Sun Apr 29, 2012 10:00 pm

Well just got back, so i'm going to test it out sometime tomorrow. Work or not, ill post a video of my process so i can get some results.
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Unread postAuthor: battlelava » Mon Apr 30, 2012 7:18 pm

So i tested it out, and i got a few launches. very hard for it to ignite. I was using carb cleaner, because i got no luck with propane. Launched a paper cup about 20'... :mumum:
Heres how i prepared to shoot. I used the compressed air can to start the mixing processes, and then i used a ghetto cardboard fan.
[youtube]http://www.youtube.com/watch?v=dR4lL6kHRZk&feature=youtu.be[/youtube]

And this is what i got at first.
[youtube]http://www.youtube.com/watch?v=YauIG-M1w_w[/youtube]
And then out of no were i got this one big launch.
[youtube]http://www.youtube.com/watch?v=-l8_KKlJHZs&feature=youtu.be[/youtube]
It was a rolled up piece of cardboard, with a round piece with hot glue for weight on the bottom taped for a tighter fit.[/youtube]

I know the spray and pray part probably has a lot to do with not firing, but is this all the power I can expect. It is also extremely quiet.
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Unread postAuthor: warhead052 » Mon Apr 30, 2012 8:23 pm

Gun Freak wrote:
warhead052 wrote:I would be more worried about enlisting... 'Specially for the marines....

This is coming from the kid who said he wants to be in the military...


Psh, I have no choice. Born in Turkey, have to serve at 18. Plus I would be less worried about testing something then going and getting my ass shot.

Back on topic, nice to see that it worked! And its no surprise the paper cup only went 20'. Try filling it with airsoft bb's and see how far it flies.
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Unread postAuthor: battlelava » Mon Apr 30, 2012 9:05 pm

I filled the cup with hotglue. It reduced distance by a lot. I'm going to try to find a way to put a chamber fan in somewhere
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Unread postAuthor: warhead052 » Mon Apr 30, 2012 10:52 pm

Have you tried just a sabot buck shot?
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