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Destruction video

Post questions and info about hybrid (compressed gas with fuel) powered cannons here. This includes discussion about fuels, ratios, ignition systems, build types, safety, and anything else relevant.
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Destruction video

Unread postAuthor: Moonbogg » Sun Sep 29, 2019 9:21 pm

Sorry for the wind. I suck at videos. Had a ton of fun today and though't I'd share some of the better clips. The last clip is how soda cans handle 4x. Hint: they don't.

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Last edited by Moonbogg on Tue Oct 01, 2019 3:11 am, edited 1 time in total.
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Re: Destruction video

Unread postAuthor: jrrdw » Mon Sep 30, 2019 5:40 am

The film from behind the target POV was my favorite. You need the fasten you target down with a couple ropes and tent stakes. :D
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Re: Destruction video

Unread postAuthor: hectmarr » Mon Sep 30, 2019 7:21 am

Nice shots! :bounce:
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Re: Destruction video

Unread postAuthor: Moonbogg » Tue Oct 01, 2019 3:12 am

I made the video better quality. It doesn't lag or skip now. The first shot looks better. Man, I suck at videos!
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Re: Destruction video

Unread postAuthor: jrrdw » Tue Oct 01, 2019 5:08 am

Moonbogg wrote:Man, I suck at videos!


No you don't, your not in practice that's all. :bigsmurf:
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Re: Destruction video

Unread postAuthor: mobile chernobyl » Wed Oct 02, 2019 3:24 pm

Needs Moar slowmo! Come on - it's 2019 - Everyone has a slowmo camera in their pocket now!

That cannon looks so badass btw - great job!
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Re: Destruction video

Unread postAuthor: Moonbogg » Wed Oct 02, 2019 6:07 pm

Thanks. Good to see you still around. The best I can do for now is to suggest using youtube's slow-mo feature, hehe.
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Re: Destruction video

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Re: Destruction video

Unread postAuthor: jackssmirkingrevenge » Sat Oct 05, 2019 9:14 am

Ah, finally! Some proper damage :D what were you shooting in terms of projectiles?
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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Re: Destruction video

Unread postAuthor: Moonbogg » Sat Oct 05, 2019 2:25 pm

jackssmirkingrevenge wrote:Ah, finally! Some proper damage :D what were you shooting in terms of projectiles?


All 12oz sodas except for two lime shots from the small barrel. Fun times.

EDIT: Also, I think the flow of the valve is limiting performance of light weight projectiles from the large barrel. Soda cans seem to do really great, and I think that's because there is plenty of fuel volume at 3X to maintain pressure behind the soda can, and a heavy soda can wouldn't go that fast anyway, so I think the flow rate doesn't harm performance with heavy stuff so much. But I think the flow doesn't allow high velocity of light stuff, such as a lemon, mostly because the barrel volume is quite large. Lemons felt weak (relatively) in the large barrel. Most people might think lemons haul ass, but I know better :D I suppose it didn't help that there was a wicked wind coming toward me, but still, I think there is room for improvement. I have some ideas for valve performance improvement when I get more funds and resources available.
Everything out of the small barrel takes off like an absolute demon though. Limes are excellent. Insanely fast really. I have ideas for greater flow without increasing the movement of the piston too much. I still want travel distance low to minimize impact. I also want to incorporate an o-ring or bi-directional piston seal in the front of the piston to get reliable sealing all the way up to the opening pressure. That would be great and may help it to perform more like a burst disc in terms of efficiency with light projectiles. So the good news is the valve works, and the better news is there is justification for a future project, lol. I want a small valve that feeds a huge volume barrel just like a much larger cannon would do. I can pull it off. I just need more spud-bucks. Who's got some extra spud-bucks laying around?

Here is a video of a lemon. Does that seem weak? It seems kind of weak. kind of like what you might expect from a regular combustion or something. The chamber is only 86 cu in, so I shouldn't feel too bad. I'm kind of a performance whore now I'm afraid.

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