SpudFiles

What's wrong with sprinkler valves?

Garrettee, there is nothing wrong with sprinkler valves, just pistons are better.

Now, to finish this arguement, any chamber sealing valve needs o-rings to keep air from leaking from the pilot to the barrel. Since no sprinkler I've seen has a piston with o-rings I'm going to have to say that sprinkler valves are barrel sealers. Case closed. If you don't beleive me that air will leak from the pilot to the barrel without o-rings then here's a picture so you can see for yourself.
http://forums.spudtech.com/topic.asp?TOPIC_ID=13265

joannardway. Did you ever provide a link to that piston cannon claiming to shoot 890 fps at 160 PSI, Im very interested in learning more about it. (want to compare it to my diaphragm cannon.

squeaks wrote:Garrettee, there is nothing wrong with sprinkler valves, just pistons are better.

Now, to finish this arguement, any chamber sealing valve needs o-rings to keep air from leaking from the pilot to the barrel. Since no sprinkler I've seen has a piston with o-rings I'm going to have to say that sprinkler valves are barrel sealers. Case closed. If you don't beleive me that air will leak from the pilot to the barrel without o-rings then here's a picture so you can see for yourself.
http://forums.spudtech.com/topic.asp?TOPIC_ID=13265

Well I don't personally know but I trust D_Hall as he is a navy weapons expert and invented GGDT.

It's really obvious though, no o-rings, no separation of pilot and barrel. Any diaphrahm valve MUST be a barrel sealing valve(unless you find a way to put o-rings on a floppy piece of rubber in which case you will have the oddest looking yet coolest working diaphrahm ever).

Nice gun eh.
First pneu? That's pretty good for your first pneumatic!

I love homemade paintball guns!

I wanna make a full auto one...

Anyway, nice gun!

Oh right....

For those of you that are interested in Behemoth (the cannon in question), then this is where you want to go:

Full UKSGC topic
Latest version, after many modifications
Some damage images

Oh that, I saw that last night, got sick of waiting......nice brother,he doesnt smile...looks like a serial killer

I didn't actually realise anyone was waiting for a link...

Whoops.

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i like ur gun! im going to super modify my pantball gun, but i should also build one of these. to one of the replys up there, 810 fps! thats insaine! thats like 552 mph! triple that and its more than twice the speed of sound!

send me material list, looks awesome (trz_zuk@hotmail.com)

iceman, as I have said in 2 threads now, we dont generally send out plans because if you cant figure it out you shouldn't be building one, but specific questions are acceptable. Look around the forum and spud wiki to find out more, and then try construct a cannon. And this is an old thread.

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Could I add:
1x Common sense
AND
-1x Digging up old threads.

to that?