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A place to ask general spud cannon related questions.
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Unread postAuthor: metalmeltr » Thu Jul 15, 2010 8:41 am

Combustion definitally, loud that is even better espesially if you fire it unexpectedly.
I did something similar to this, i took my advanced combution to a boy scout meeting and showed it to everyone, i carried it in chared with nothing in the barrel and once everyone had arrrived i fired it and it scared everyone.
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Unread postAuthor: maverik94 » Thu Jul 15, 2010 9:51 am

If you're just going for a crowd-pleaser, I would go with a combustion cannon. For performance, i would go with a pneumatic.
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Unread postAuthor: STHORNE » Thu Jul 15, 2010 11:56 am

@maverik94

I am going for both crowd-pleasing and performance but more then the other. About 70% crowd / 30% performance so i want to make something that can do some damage, but for the most part sends chills down everyone's spine.

Sounds like everyone is on the same page with me making an advanced combustion. so unless there are any other objections that is going to be the lucky pig!
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Unread postAuthor: paaiyan » Thu Jul 15, 2010 12:06 pm

Maybe a 2X burst-disc hybrid?
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Unread postAuthor: Biopyro » Thu Jul 15, 2010 1:28 pm

Crowd pleaser = reliable, fast reload, loud noises.
I am in the exact same situation, and have decided to build a combustion as a crowd pleaser.
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Unread postAuthor: SpudBlaster15 » Thu Jul 15, 2010 3:23 pm

maverik94 wrote:For performance, i would go with a pneumatic.


Not really sure why everyone seems to believe that a pneumatic cannon will outperform a similar combustion launcher. A reasonably well designed advanced combustion will almost always produce higher velocity and kinetic energy figures than an identical pneumatic running at typical shop compressor pressures, and it doesn't have the velocity limitations associated with ambient temperature air.

For simple, low pressure potato cannons, Advanced combustion > PVC pneumatic.

For high pressure performance oriented cannons, Hybrid > High pressure pneumatic.

Chemical energy wins every time. :D
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Unread postAuthor: STHORNE » Fri Jul 16, 2010 12:33 am

yes, you make very good points.

and i subcontiously felt the same way about combustions out-performing pneumatics (as a matter of choice) but didn't want to stir anything up so i kept it to myself :P

@paaiyan - I would love to but $150 budget kind of limits that possibility
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