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Hybrid Questions?

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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Hybrid Questions?

Unread postAuthor: spudkilla224 » Sun Oct 11, 2009 11:33 am

Hello everyone, i'm in the process of designing a hybrid cannon. And I have a couple questions about them.

First is using a 1.5" SCH.40 Steel Pipe that is 12" Long too long for a chamber? like would ddt happen?

also would i be able to take it up to an 8X Mix Safely? I read the wiki and it said that a 2" steel pipe could safely handle up 2 11X.

And last off when i'm using hggdt program it comes up with an answer that says "Combustion Incomplete" what does this mean but then it says underneath of it " No Errors".

Any Help Would Be Greatly Apprecited. :D
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Unread postAuthor: Moonbogg » Sun Oct 11, 2009 12:20 pm

1 1/2" pipe is too small for a cannon combustion chamber. If you are after a bb gun then you may be on the right track.
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Unread postAuthor: spudkilla224 » Sun Oct 11, 2009 12:26 pm

jw? how is i? Mcrowley used a 1.25" pipe? So would it be ok?
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Unread postAuthor: Moonbogg » Sun Oct 11, 2009 12:35 pm

spudkilla224 wrote:jw? how is i? Mcrowley used a 1.25" pipe? So would it be ok?


If you want to shoot bb's and micro ammo, sure go for it.
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Unread postAuthor: spudkilla224 » Sun Oct 11, 2009 12:45 pm

ok yeah woul like paintalls be considered micro ammo? or like .50 caliber?
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Unread postAuthor: Moonbogg » Sun Oct 11, 2009 12:53 pm

I consider anything less than 1 1/2" diameter micro ammo :D I may have victimized you with my hatred of small ammo and tiny "cannons". I don't think anyone should call them cannons ever again. They are smooth bore gas plinkers, or SBGP's.
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Unread postAuthor: spudkilla224 » Sun Oct 11, 2009 12:56 pm

yeah i think the same way. :D casue when people build paintball air rifles and they call the cannons, which they really aren't. lol so how many mix do you think i could take a 1.5" By 12" long chamber up to safely?
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Unread postAuthor: Larda » Sun Oct 11, 2009 1:06 pm

Moonbogg wrote:I consider anything less than 1 1/2" diameter micro ammo :D I may have victimized you with my hatred of small ammo and tiny "cannons". I don't think anyone should call them cannons ever again. They are smooth bore gas plinkers, or SBGP's.


So my hybrid with a 20mm barrel is a "smooth bore gas plinkers"? :D
Good that i made a GB barrel then. *^_^*
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Unread postAuthor: MrCrowley » Sun Oct 11, 2009 1:29 pm

A 1.5" chamber is plenty for shooting anything up to golfballs.

Chuck a 1" union on there you you can shoot them about 250m/s with the right barrel and mix. With only a 3/4" union, i'm sending projectiles 3/4" in diameter and below past the speed of sound.
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Unread postAuthor: Moonbogg » Sun Oct 11, 2009 7:33 pm

Larda wrote:
Moonbogg wrote:I consider anything less than 1 1/2" diameter micro ammo :D I may have victimized you with my hatred of small ammo and tiny "cannons". I don't think anyone should call them cannons ever again. They are smooth bore gas plinkers, or SBGP's.


So my hybrid with a 20mm barrel is a "smooth bore gas plinkers"? :D
Good that i made a GB barrel then. *^_^*


Your device is a freak of nature and lies outside of the realm of the ordinary. So every day comparisons do not apply here.
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Unread postAuthor: Ragnarok » Sun Oct 11, 2009 7:58 pm

Moonbogg wrote:I don't think anyone should call them cannons ever again.

If we're being that petty, nothing you've ever put on this site is a cannon either.
Strictly, the cannon refers to a gunpowder powered, smoothbore, muzzle loaded gun that fires a 42 pound shot (and ONLY a 42 lb. shot).

Stick that in your pipe and smoke it.
Next time you feel like being funny by using your own unique definitions of terminology, don't.
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Unread postAuthor: Moonbogg » Sun Oct 11, 2009 8:06 pm

Ragnarok wrote:
Moonbogg wrote:I don't think anyone should call them cannons ever again.

If we're being that petty, nothing you've ever put on this site is a cannon either.
Strictly, the cannon refers to a gunpowder powered, smoothbore, muzzle loaded gun that fires a 42 pound shot (and ONLY a 42 lb. shot).

Stick that in your pipe and smoke it.
Next time you feel like being funny by using your own unique definitions of terminology, don't.


In wikipedia a cannon falls under totally vague descriptions, so you are WRONG. You are also easily offended and become upset at the drop of a hat which I find petty,
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Unread postAuthor: Ragnarok » Sun Oct 11, 2009 8:22 pm

Moonbogg wrote:In wikipedia a cannon falls under totally vague descriptions, so you are WRONG.

Yes, because Wikipedia is the ultimate authority. I'm certain that if you read the article in full, you'd find no reference to what I say.

I'm also certain you can't find this text at the link I gave above: "Any large, smoothbore, muzzle-loading gun—used before the advent of breech-loading, rifled guns—may be referred to as a cannon, though the term specifically refers to a gun designed to fire a 42-pound (19 kg) shot"

You are also easily offended and become upset at the drop of a hat which I find petty.

Oh yes. I'm sure that spudkilla found your use of your as of yet unique definition of the word cannon highly entertaining, and not in the least a waste of his time.

By the way, I may be being slightly sarcastic.
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Unread postAuthor: Moonbogg » Sun Oct 11, 2009 8:50 pm

Don't worry Rag, I knew you loved me a long time ago and no force on earth could possibly sway your heart in a different direction.
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Unread postAuthor: Technician1002 » Sun Oct 11, 2009 9:11 pm

I'm not sure what to tell my folks. They picked up some cannon balls from the US civil war. They have some in 2 sizes. Niether of which is 42 lb.

Acording to the manual the 42 lb round is one of several sizes.
http://www.civilwarartillery.com/tables.htm
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