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Design advice, would this work?

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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Re: Design advice, would this work?

Unread postAuthor: jackssmirkingrevenge » Fri May 02, 2014 9:53 am

Personally I wasn't too impressed by the 3/4" combustions I had built. You really need big bores to see the effect.

How about downloading HGDT and getting some performance estimates?

http://www.thehalls-in-bfe.com/HGDT/
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Re: Design advice, would this work?

Unread postAuthor: vng21092 » Fri May 02, 2014 11:19 am

Yea I was reading some debates over combustion vs pneumatic and for the most part pneumatics win in terms of performance for smaller cannons. I just wanted to make combustion because I've already made a marble pneumatic.
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Re: Design advice, would this work?

Unread postAuthor: BowerR64 » Sun May 04, 2014 5:13 pm

jackssmirkingrevenge wrote:Personally I wasn't too impressed by the 3/4" combustions I had built. You really need big bores to see the effect.

How about downloading HGDT and getting some performance estimates?

http://www.thehalls-in-bfe.com/HGDT/


It would if you used bangsite and water. 1" tee with a 3/4" barrel starts to sound like a real gun being fired. I havnt done any tests on velocity because i could care less about that.

Ive never really put anything solid in my pistols. The cannons on the other hand i have
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Re: Design advice, would this work?

Unread postAuthor: vng21092 » Mon May 05, 2014 7:19 pm

I've read that using carbide was bad for PVC as it form acetylene no?
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Re: Design advice, would this work?

Unread postAuthor: jackssmirkingrevenge » Tue May 06, 2014 6:53 am

BowerR64 clearly knows what he's doing, but in general the use of carbide cannons is frowned up on the forum as being potentially unsafe.
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