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Built a combustion cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: MrCrowley » Wed Aug 22, 2012 1:53 pm

PotatoEnemy17 wrote:Maybe an advanced combustion might out perform a simple ball valve cannon, but once you do a ball valve cannon, a QEV cannon is only a step away. Plus a ball valve cannon can be spring loaded. :D

Well, actually, I've seen propane metered combustions match, or maybe even out-perform, a 1.5" piston valve at ~100PSI. You shouldn't under-estimate the importance of flow or for that matter, the power of combustions :wink:

Pneumatics win when it comes to high pressures (excluding hybrids) but combustions can dominate a good deal of basic pneumatic cannons; including piston valved cannons.

PotatoEnemy17 wrote:truemanator said he likes simple cannons. Here's the problem to get a powerful combustion you need to build an advanced combustion or hybrid, both of which are inherently not simple (hence the name advanced combustion) :lol: But if you want power AND simplicity, a pneumatic cannon is just the thing. :D After all, everyone likes simplicity in a cannon and MOAR POWER!
If you can find a dust collector valve, pneumatics are easy. But if you want to get the same performance a metered combustion will give you but making the valve yourself, you have to make a piston valve; which is generally harder than making advanced combustions.

'Advanced combustion' is a misnomer really, don't let the name fool you. All you need is a basic combustion plus a meter pipe, gauge and propane tank. The metering is dead easy and the calculations can be worked out in minutes.

I'm all for pneumatics, but there are some areas, particularly around this performance level, where combustions are quite suitable (and portable).
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Unread postAuthor: truemanator » Thu Aug 23, 2012 5:31 am

actually,i meant to say simple looks
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