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A follow up concept for a design I had once dreamt of.
Posted: Tue Nov 21, 2017 8:18 am
by Crimson
Given it's literally in doodle stages right now, but I figured since I have loads of 'free' money and access to a machine shop now, I have the ability design a bit more than a smol project, so I though I'd throw this out here and see what the diy cannon community thought.
totally not based off a m114 howitzer...
I'll crunch some numbers once I get to the cad/hardcore cad (paper >.<) stages.
Re: A follow up concept for a design I had once dreamt of.
Posted: Wed Nov 22, 2017 5:47 am
by jackssmirkingrevenge
Crimson wrote:I though I'd throw this out here and see what the diy cannon community thought.
We're generally
disapproving of acetylene for safety reasons, favoring fuel/air hybrids for greater power that is easier to control, but if you can build it with a sufficient safety factor it would be fairly awesome.
Re: A follow up concept for a design I had once dreamt of.
Posted: Thu Nov 23, 2017 6:11 am
by Crimson
jackssmirkingrevenge wrote:Crimson wrote:I though I'd throw this out here and see what the diy cannon community thought.
We're generally
disapproving of acetylene for safety reasons, favoring fuel/air hybrids for greater power that is easier to control, but if you can build it with a sufficient safety factor it would be fairly awesome.
I'm thinking 1.5"+ thick mild steel, but I have yet to figure out pressure ratings and safety margins for anything. (/0_0)/
Re: A follow up concept for a design I had once dreamt of.
Posted: Thu Nov 23, 2017 5:20 pm
by Zeus
Myself, I would avoid acetylene too, but for a totally different reason. If you stick to oxy/propane(or your hydrocarbon of choice), you can always pressurise the chamber for mo power. You already have a rupture disc, regulators, gauges, etc. It's not a whole lot harder to add twice the fuel and pressurise gently with oxygen. Or given that fuel/air mixes tend to offer more power by unit of fuel, then just pressurise with air.
Re: A follow up concept for a design I had once dreamt of.
Posted: Tue Nov 28, 2017 7:56 am
by Crimson
Zeus wrote:Myself, I would avoid acetylene too, but for a totally different reason. If you stick to oxy/propane(or your hydrocarbon of choice), you can always pressurise the chamber for mo power. You already have a rupture disc, regulators, gauges, etc. It's not a whole lot harder to add twice the fuel and pressurise gently with oxygen. Or given that fuel/air mixes tend to offer more power by unit of fuel, then just pressurise with air.
Well, I guess I'll start with propane and see where we land at there ¯\_(ツ)_/¯