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Semi Auto Combustion

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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Semi Auto Combustion

Unread postAuthor: clemsonguy1125 » Sat Dec 10, 2011 8:52 pm

Ive been playing around with the idea of a combustion where the rounds hold the 1x mix and they get fed into the barrel from a mag. As they fall down, they come in contact with two electrodes. The trigger is pulled, the burst disk ruptures, and propels the chamber forward. The biggest problem I for see is that once a chamber is big enough to have decent power it will be to heavy.
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Unread postAuthor: mobile chernobyl » Sat Dec 10, 2011 9:22 pm

sounds similar to a hybrid cartridge prototype I've read about somewhere... :wink:
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Unread postAuthor: clemsonguy1125 » Sat Dec 10, 2011 9:52 pm

But if I remember correctly, those fire a separate projectile and eject the cartridge, but then again, I havent read the whole thread.
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Unread postAuthor: jackssmirkingrevenge » Sat Dec 10, 2011 10:05 pm

You mean that the combustion chamber would be the projectile itself, like theBenelli CB M2?

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Power would be very limited at 1x.

Your ignition idea reminds me of this that had been proposed on spudtech:

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Unread postAuthor: POLAND_SPUD » Sat Dec 10, 2011 10:08 pm

that's acctaully a pretty good idea you know
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Unread postAuthor: clemsonguy1125 » Sat Dec 10, 2011 10:11 pm

Exactly, but without the magic powder, it could possibly work as a hybrid but the weight of the chamber would limit power.
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Unread postAuthor: jackssmirkingrevenge » Sat Dec 10, 2011 10:34 pm

clemsonguy1125 wrote:Exactly, but without the magic powder, it could possibly work as a hybrid but the weight of the chamber would limit power.


... unless you make it an atmospheric pressure hybrid injecting oxygen as well.
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Unread postAuthor: al-xg » Sun Dec 11, 2011 4:37 am

Isn't even more annoying than cartridges regarding the amount of effort to get one shot ?

It seems quite likely that the projectiles/chamber would tend to get damaged beyond reuse on firing ?


Apart from that, sounds good you'd end up with a drag stabilised projectile too.
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Unread postAuthor: jackssmirkingrevenge » Sun Dec 11, 2011 7:45 am

al-xg wrote:Isn't even more annoying than cartridges regarding the amount of effort to get one shot ?

It seems quite likely that the projectiles/chamber would tend to get damaged beyond reuse on firing ?


Definitely - and to top it off, no flying brass :-/
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Unread postAuthor: wyz2285 » Sun Dec 11, 2011 8:34 am

LOL I´m actually making a combustion catrige cannon, using 0.5l water bottles :lol:
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Unread postAuthor: POLAND_SPUD » Sun Dec 11, 2011 9:32 am

hmmm what about something like this??

Though it would require a high mix hybrid not a combustion
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Unread postAuthor: clemsonguy1125 » Sun Dec 11, 2011 7:58 pm

Thats similar to what Im thinking about, I just need a way to make it light weight.
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