My first cannon

[x.X.Cpt.Rollhart.X.x]

This is my cannon ...

chamber is 24" long of 4" SCH40

The barrel is 36" long of 2.5" SCH40

Modded sprinkler valve and ... thats it

[cannon freak]

How fast, and how far can it shoot.

[Andrew52]

you know often people ask that question and often they never know/anwser because most people dont have a chronograph i know theres a ggdt and for a gun of that size i doubt they will be measureong it

[jrrdw]

Nice, no presure gauge, you a good guesser? i'd be worring about over fill.

[Andrew52]

well most aircompressors have regulators or they go up to 125 psi which is safe

[x.X.Cpt.Rollhart.X.x]

Nice, no presure gauge, you a good guesser? i'd be worring about over fill.

there is no schrader valve too ....

only cause I need to buy my schrader valve and my air gauge tomorow ...

and i will do a nice Paintjob

[Andrew52]

i bet u wish u could shoot that do u have any tennisballs to shoot

[x.X.Cpt.Rollhart.X.x]

i bet u wish u could shoot that do u have any tennisballs to shoot

I dont want to shoot tennisballs ...

[CpTn_lAw]

your cannon is pretty heavy, isn't it? What are you going to shoot with this cannon?

[x.X.Cpt.Rollhart.X.x]

your cannon is pretty heavy, isn't it? What are you going to shoot with this cannon?

I am not authorize to talk about what i will shoot (because of the rules of the forum) ...

[Darkside 6ix]

NO retard

PCGUY was talking about solid propellants. such as a solid combustion fuel, such as black powder.etc.

[Flinchy]

you really don't want to use solid propellants in cannons, sometimes igniting them will make them expand too rapidly which will possibly break the pvc creating shrapnel. ha, the cannon im currently playing around with looks very similar to that design, except with a 1.5inch barrel and a 3in chamber. make sure your schrader valve is threaded, and get alot of teflon tape. you can put the schrader valve almost anywhere on the cannon but i'd suggest putting it right through the thickest part on the tip of the endcap. that way it won't rip off of your cannon from high pressure.

[SpudStuff]

Yes i just read that standare dynamite ignites at ~24000 FPs
whatever that meant but it sounds fast

[boilingleadbath]

Spudstuff, I point out that:
*that's the VoD (velocity of detonation), which is calculated for an infinitly large diameter charge.
*NG doesn't burn very well, tending to go out
*It takes a bit of run-up time to reach that velocity even if explosivly set off.

And yes, the 24,000 fps (who the f gives VoDs in FPS? <i>Everyone</i> gives them in m/s...) number seems about right.
And a proper detonation - or even an overly fine powder - tends to cause failure in real-steal firearms.

Also, that avatar distracting, not terribly well animated, and really pissing me off. Take whatever action seems most proper considering this.

[Brian the brain]

I would'nt shoot gunpowder out of a pneumatic either!!!
Useless discussion.He probably meant he was gonna shoot animals or damage some of "OPP"