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semi-automatic combustion cannon

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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Unread postAuthor: Hailfire753 » Fri Aug 24, 2007 10:02 pm

geez, give the guy a chance! At least let him get the schematics up before you rip on him! :lol: Then let the carnage begin! :twisted:
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Unread postAuthor: Pilgrimman » Fri Aug 24, 2007 10:46 pm

If you want a truly semi-auto combustion, i.e. fires as often as you can pull the trigger, you would need a single switch to complete a circuit for a chamber fan or other venting apparatus, a circuit for electronically controlled fuel metering, and a high voltage sparking device. The changes in voltage between the device would be extreme, so it'd be very difficult to pull off. However, if you can find a way to do it, more power to you!
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Unread postAuthor: jackssmirkingrevenge » Sat Aug 25, 2007 8:34 pm

geez, give the guy a chance!


Someone with no concept of fuel/air ratios talking about a semi-auto combustion as a first project cannot really expect to be taken seriously :roll:
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Unread postAuthor: silverdooty » Sat Aug 25, 2007 10:15 pm

Pilgrimman wrote:If you want a truly semi-auto combustion, i.e. fires as often as you can pull the trigger, you would need a single switch to complete a circuit for a chamber fan or other venting apparatus, a circuit for electronically controlled fuel metering, and a high voltage sparking device. The changes in voltage between the device would be extreme, so it'd be very difficult to pull off. However, if you can find a way to do it, more power to you!


it's called a relay. most automotive lighting accessory manufacturers use them to control many lights. they can even control more relays. all you would have to do is design each system and then actuate them via one relay switch.

i'm sure if you search through the forums you can find an example of each system, then modify it to your needs.

remember to use these posts as guidelines not gospel. some of the members really do know what they are saying, others are just cavemen who stumble upon fire. :wink:

good luck
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Unread postAuthor: CannonCreator » Fri Aug 31, 2007 7:34 pm

use the oxygen in the bottle for welding !!!! I did this on a fully auto cannon I made with my uncle and it worked great!
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Unread postAuthor: Redcoat » Fri Aug 31, 2007 10:48 pm

I think you sould give him a chance though. It would be slack not too.
I think it's possible but like i said earlier i would like tosee the schematics out of interest.
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Unread postAuthor: Tom » Wed Sep 05, 2007 7:31 am

I gave up, but :D I had the idea last to make combustion cartridge's. Has somewhone on this forum done something like this?, i think that that work if I use a bolt for reloading :idea: .
GR. Tom
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 05, 2007 7:48 am

Tom wrote:I had the idea last to make combustion cartridge's. Has somewhone on this forum done something like this?, i think that that work if I use a bolt for reloading


Yep, and it looked something like this:

[youtube]http://www.youtube.com/watch?v=V4q8QJr412Y[/youtube]

The original thread on spudtech is here but most of the pics are dead, though I posted most of them in this thread.
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Unread postAuthor: Tom » Wed Sep 05, 2007 9:35 am

Do you still have the diagram of it?
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 05, 2007 9:57 am

Tom wrote:Do you still have the diagram of it?


go here
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