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overly large Hybrid?

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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Unread postAuthor: jeepkahn » Sun Jan 25, 2009 1:28 pm

Gippeto wrote:
striker wrote:The barrel will be similar to the one mentioned in the post above.
I am Guess/Esimating the recoil will be severe


That is something of an understatement.

This will be an expensive undertaking by private individual standards, dare I ask "Whom is funding this project?"


Considering D_Hall's shop has a similar sized one, I'm not so sure he's not going to get the attention of gubment institutions.... as well as psychiatric ones..... LOL

even without pushing it to the limits, he's talking about a gun with a range measured in miles, and even local authorities will prolly frown on lobbing objects that far....

BUT, It will be COOL!!! :twisted:

Me and my neighbor (he's an industrial high pressure pipe welder) have the materials and the plans for a gun with similar capabilities, but I'm not so sure we can find anywhere in a 100 mile radius to actually test it... However, it will be pneumatic...
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Unread postAuthor: POLAND_SPUD » Sun Jan 25, 2009 1:39 pm

D_hall happends to be employed by 'gubment institution' :wink: and I am not talking about the ministry of silly walks
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Unread postAuthor: jeepkahn » Sun Jan 25, 2009 2:39 pm

POLAND_SPUD wrote:D_hall happends to be employed by 'gubment institution' :wink: and I am not talking about the ministry of silly walks


That's what I was saying.... :wink: D_Hall's employers might not take kindly to something that stout in the hands of the private sector... :shock:
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Unread postAuthor: Big Boom » Sun Jan 25, 2009 3:07 pm

Just curious, where on earth are you gonna shoot this thing?
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Unread postAuthor: striker » Sun Jan 25, 2009 5:13 pm

Well Im not going to tell you how much I think I could make this design for. You would laugh.But I wont compromise on safety

YES I realise that this device IF created will be highly dangerous if used insensibly.

Just remeber that I havent committed my self to build it yet.
I am still in the planning stages.
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Unread postAuthor: D_Hall » Sun Jan 25, 2009 6:24 pm

Big Boom wrote:Just curious, where on earth are you gonna shoot this thing?


That's one thing that I see mentioned, but seriously, what's the big deal? It shouldn't be difficult to find such a place. We aren't talking about a 13 year old kid with no car. We're talking about a grown adult with considerable resources at his disposal and a trailerable gun. Finding a place to shoot such a gun? I can name about a thousand off the top of my head. True, the odds are against that place being in his backyard, but if he's got the dedication to build this thing, he's probably got the dedication to drive a few hours (or even days) to shoot it too.
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Last edited by D_Hall on Mon Jan 26, 2009 9:44 am, edited 1 time in total.
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Unread postAuthor: inonickname » Mon Jan 26, 2009 3:42 am

You really only need a single gap in a hybrid, but go for multiples if you want. Consider that the higher air density makes the spark have a harder time to jump, and two gaps doubles the problem. Also, as your chamber gets larger it's integrity will be worse..making it weaker. Watch out for that, but good luck. :twisted:
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Unread postAuthor: D_Hall » Mon Jan 26, 2009 9:43 am

inonickname wrote:You really only need a single gap in a hybrid, but go for multiples if you want. Consider that the higher air density makes the spark have a harder time to jump, and two gaps doubles the problem.

Again, for anyone who's got the dedication and resources to do what the OP is trying to do, this is a trivial concern.

And multiple gaps can be important for large scale hybrids. Not AS important as it is for simple combustion guns, but consider your heat losses to the walls of the gun (see: Jimmy101's work). Quadruple your burn time and quadruple your losses.

Also, as your chamber gets larger it's integrity will be worse..making it weaker.

Only if you're an idiot with no concept of the words "proper design."
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Unread postAuthor: striker » Tue Sep 18, 2012 12:59 am

Well its been a long time since I updated on this project . I had lined up approx 30-40L pressure vessel but due to going in to my dream job training (which is well super fun), all my projects got put on the back burner (like 3 years).Im not going to say too much as I will do a write up after the build process is completed but, I have an approx 19l high pressure vessel ( I know down scaled :roll: ) in my possession and have just placed an order for the barrel steel. So once I've accumulated all the necessaries and get to my welder mate, the fun can begin
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Unread postAuthor: jackssmirkingrevenge » Tue Sep 18, 2012 1:45 am

Props for keeping at it... and did you know that this happened while you were away :D

http://www.spudfiles.com/forums/vera-my ... 23989.html

Image

Image

Image

[youtube]http://www.youtube.com/watch?v=M3Ia-o_PnDY[/youtube]
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Unread postAuthor: striker » Tue Sep 18, 2012 1:52 am

Oh yeah I know about VERA. Ive got a pic of it set as my comp background :D
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Unread postAuthor: jackssmirkingrevenge » Tue Sep 18, 2012 1:57 am

Inspiration if any was needed :)

watched the video again, same reaction.

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Unread postAuthor: jonesy42 » Tue Sep 18, 2012 2:32 am

jackssmirkingrevenge wrote:Props for keeping at it... and did you know that this happened while you were away :D

http://www.spudfiles.com/forums/vera-my ... 23989.html

Image

Image

Image

[youtube]http://www.youtube.com/watch?v=M3Ia-o_PnDY[/youtube]



Hey Jack, Would this be suitable for some back-yard plinkin or what? :lol:
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Unread postAuthor: jackssmirkingrevenge » Tue Sep 18, 2012 6:24 am

jonesy42 wrote:Hey Jack, Would this be suitable for some back-yard plinkin or what? :lol:


I doubt most people have a backyard big enough to fit the actual launcher in :D
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Unread postAuthor: jonesy42 » Tue Sep 18, 2012 6:35 am

jackssmirkingrevenge wrote:
jonesy42 wrote:Hey Jack, Would this be suitable for some back-yard plinkin or what? :lol:


I doubt most people have a backyard big enough to fit the actual launcher in :D



Good job Saddam hussein didn't get his hands on that bad boy!
Talk about weopons of mass destruction,... CRIKEY!
:lol:
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