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Hybrid Cartridge (Possible Fail)

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 Cartridge (Possible Fail)

Unread postAuthor: irisher » Tue Jan 19, 2010 7:10 pm

After being inspired by JSR's combustion cartridge awhile back I decided to attempt my own with hybrid mixes. Ignition still needs work and metering still needs tweaking but it is coming along. It has also successfully loaded an empty cartridge :lol: .Feel free to ask questions.
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Attachments
cropped.JPG
A view from the side.
Sneak Peak 2,0 002.jpg
Top
Sneak Peak 2,0 003.jpg
The bolt
Sneak Peak 2,0 004.jpg
Cartridge
Sneak Peak 2,0 005.jpg
My soon to be ammo
Last edited by irisher on Mon Mar 15, 2010 6:28 pm, edited 2 times in total.
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Unread postAuthor: Lockednloaded » Tue Jan 19, 2010 7:28 pm

wow looks great, what mixes do you plan on using? Is the fill valve a schrader, and if so how do you inject the propane. And last, where's the burst disk?
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Unread postAuthor: deathbyDWV » Tue Jan 19, 2010 7:56 pm

Same questions as him...

Also what sizes are the cartridge pipes?
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Unread postAuthor: JDP12 » Tue Jan 19, 2010 8:12 pm

Interesting...

How doyou plan on sealing a BD??

Im workong on a combustion cartridge, and may upgrade to hybrid if i can get money.

Good luck!
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Unread postAuthor: irisher » Tue Jan 19, 2010 8:28 pm

@ JDP http://tinypic.com/view.php?pic=27x4fuc&s=6 This the sealing face for the burst disk. The cap has poured epoxy resin in it and the pipe nipple has epoxy putty to help compress the burst disk.

@DWV It is a 1.5 x 3" pipe nipple capped with black iron caps.

@Lockednloaded I plan on 10x shots with mapp willing through schrader.

Edit: I apologize for the poor picture quality. It does not really look that shoddy.
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Unread postAuthor: JDP12 » Tue Jan 19, 2010 9:17 pm

Ah. So a homemade union in essence. Have you tested it for sealing??
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Unread postAuthor: irisher » Tue Jan 19, 2010 9:28 pm

I have tested with my shock pump. When heavily torqued down no air leaks through the barrel. However the threads where the nipple meets the cap has tended to leak slightly.
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Unread postAuthor: jackssmirkingrevenge » Wed Jan 20, 2010 1:34 am

Another ghetto-but-great setup from you :D and bloody hell, if you're planning on having those cartridges eject, I wouldn't want to be hit by one!
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Unread postAuthor: psycix » Wed Jan 20, 2010 7:25 am

and bloody hell, if you're planning on having those cartridges eject, I wouldn't want to be hit by one!

Projectiles on their own. :lol:
Hey, maybe use each empty cartridge as ammo for the cartridge after it...
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Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

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Unread postAuthor: irisher » Mon Jan 25, 2010 9:31 pm

I forgot to show the sight in the previous pictures. Image
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Unread postAuthor: roboman » Mon Jan 25, 2010 9:37 pm

Is that a computer fan guard?
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ilovetoblowthingsup wrote: The yellow/orange back fits super snugly, very nice in fact, but the head does not fit.
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Unread postAuthor: irisher » Mon Jan 25, 2010 9:39 pm

Shush, no one needed to know that. :P
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Unread postAuthor: roboman » Mon Jan 25, 2010 9:49 pm

Actually, that's a really good idea...I may have to steal that for my next build. :P
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ilovetoblowthingsup wrote: The yellow/orange back fits super snugly, very nice in fact, but the head does not fit.
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Unread postAuthor: jackssmirkingrevenge » Tue Jan 26, 2010 2:20 am

irisher wrote:Shush, no one needed to know that. :P


I think anyone who's ever taken a PC apart (and that's probably msot people here :P) would recognise it immediately ;)

More of an anti-aircraft sight though, are you worried about police interference :D
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Unread postAuthor: irisher » Tue Jan 26, 2010 5:11 pm

I was kind of going for the AA look. I plan on mounting it to a tripod so I think it go along well.
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