triple barrel thoughts?

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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boilingleadbath
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The effect of an early exit has been exaggerated in this thread.

In reality, it doesn't matter, because the reduced-pressure-'wave' does not have time (only traveling at the speed of sound) to reach the projectile in the other tubes before they exit too.

I've covered this before in more detail.
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biggsauce
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I remember DR made a triple barrel cannon that shot arrows. It was pretty neat, it used 3 sprinkler valves with one main pilot valve. The other valves were piloted in series by the first sprinkler valve. I don't remember seeing his post in the archives, but it would provide some inspiration.

Or you could carry on and continue with a single valve design, as it would be a tight fit with those three barrels and fittings on each one when they are in the pipe like that.

btw, what happened to DR?
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Jacksa26
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Thanks for your thoughts everyone, they are much appreciated.
Last night i went through with my plan and built the barrel (or should i say barrels?) and i am very happy with the end result!

Once i inserted the 15mm pipes and was happy with their position I filled the gaps with an expanding sealant then some epoxy putty on top to give it a hardened paintable exterior.

I only had one shot with it before i painted it tonight (still waiting for it to dry :x ) and it went really well- the marbles i shot at the target which was about 25 meters away hit together within a 30cm area.

Here are some pics. Enjoy!
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Ragnarok
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Nicely done! It looks pretty professional (and even a bit like a mini-gun, albeit one with only three barrels).
Does that thing kinda look like a big cat to you?
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Blitz
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Ragnarok wrote:Nicely done! It looks pretty professional (and even a bit like a mini-gun, albeit one with only three barrels).
That's exactly what I was thinking. Although, some of the AH-1 Cobras have a 3-barreled 20mm gating gun.

Looks great so far!
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psycix
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Awesome!
The looks of it are very very impressive :D
Reminds me of the gattling gun on the warthog of the game Halo, that one also has 3 barrels.
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biggsauce
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Hahaha that looks awesome! No problem with any fittings then?
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