2 sprinkler

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

Hi,

I design a very simple cannon that I plan to build next week. I just want to know your opinion on this simple gun made with 2 1" sprinkler valve. It's all made of SCH40. I will use it with about 100 psi. And I want to know if the ammount of air will be ennough for the size of the air chamber and for the size of the barrel.

This is the plan, I you dont understand anythings on it ask me

[spudshot]

yeah, that'll work fine, you can lengthen the barrel if you want, you should also build a barrel support, so it doesnt whip around when you fire it.

[SpudStuff]

reduce the size of the manifold connecting the barrel to the valves the dead space reduces performance. also if your using chambers that big use a 2 inch connection and a thereded bushing so you can upgrade later

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

reduce the size of the manifold connecting the barrel to the valves the dead space reduces performance. also if your using chambers that big use a 2 inch connection and a thereded bushing so you can upgrade later

what size should I use to make the part between sprinkler valve and barrel ? (2 elbow with the tees)

[rna_duelers]

I would leave it as is because how else are you meant to vent to valves into 1 barrel with out atleast that amount of dead space?But you could have the elbows as a part of the camber and vent into the tee directly thats the only way i can see of reducing the dead space.

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

ok final result :

what are your comments ?

The 2 black circle are sprinkler valve.

I didnt draw the blowgun (to open these srpinkler valve) and all the hoses to connect these 2 chamber.

[CS]

I would highly suggest better valves. Dumping a 4" by 1.5' chamber threw 1" then a sprinkler vavle is really killing your flow. You dont need to buy a supah or anything, just build a T-piston.

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

I would highly suggest better valves. Dumping a 4" by 1.5' chamber threw 1" then a sprinkler vavle is really killing your flow. You dont need to buy a supah or anything, just build a T-piston.

but a lot of person did that ... like :








I am better to do something like that ?



I am talking about the distance it will shoot

[spudshot]

it'll shoot good, dont get me wrong, but i agree with pimpmann, build some piston valves, or get some bigger sprinklers

[Darkside 6ix]

i duno if that would work... i think it might but if one valve doesnt go at the same time then you might have.....ooo you might even be able to make like a double shot er somthing just thought of it

[Benny]

of course it will vent both pilots at the same time.

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

i duno if that would work... i think it might but if one valve doesnt go at the same time then you might have.....ooo you might even be able to make like a double shot er somthing just thought of it

the 2 sprinler work on the same blowgun ...

[sgort87]

I love how the problems on Spudfiles are pointed out much slower than in a duplicate thread on Spudtech.

Yes, other people have built similar things to your design and they work alright, but what if I told you that for about $15 more you can have yourself a MUCH more powerful launcher without needing to modify your chamber or barrel volume?

Do what Pimpman said (which is about exactly what I said on Spudtech) and make two Barrel-Sealing Tee Valves, each actuated by a modified sprinkler valve. They are not hard to make in a 2" Tee. 1.25" end caps fit perfectly inside 2" pipe and work great as pistons. Give it a try and you should be quite happy.

[)DEMON(]

um,in your second new pic does that huge cannon have 4 sprinkler valves ?,or have i inhaled too much glue fumes