Spring powered ball valve.
- jackssmirkingrevenge
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It's much easier and more effective to mod a sprinkler valve.
hectmarr wrote:You have to make many weapons, because this field is long and short life
- lockmanslammin
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JSR is right, it is much easier to mod a sprinkler valve, heck its probably easier to make a piston valve for that matter, but I'm having fun making a spring loaded ball valve. I'm accually using it as an exaust for a piston valve, but it will probably work as good as the piston valve itself by the time I'm done...
incase your curious, heres a link to my build thread...http://www.spudfiles.com/forums/ongoing ... 13286.html
have fun, Lock
incase your curious, heres a link to my build thread...http://www.spudfiles.com/forums/ongoing ... 13286.html
have fun, Lock
- sniper hero
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I made something like that but not totally pvc and I had similar problems but did you you think of the the piece of iron going at high velocity near the scope.and if you don't put something to stop the valve from turning more than 90 degrees the small normal stopper will break.
http://www.spudfiles.com/forums/viewtop ... 9de#164904 8)
http://www.spudfiles.com/forums/viewtop ... 9de#164904 8)
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Last edited by SpudBlaster15 on Wed Jul 14, 2021 6:35 pm, edited 1 time in total.
i used a bunch of rubber bands to open one of my first cannons.
"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote
you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
Is this a good idea then?SpudBlaster15 wrote:You are going to need to apply one hell of a force to the ball valve handle within one hell of a short period of time to fall within the opening time range required for good performance on an average launcher. To give you an idea, an average piston valve has an opening time of less than 10 milliseconds. As far as I have calculated, this is almost impossible to obtain using any reasonable spring.
However, I'm pretty sure that the ball valve to which I briefly attached a flash powder driven ram opened in only a few milliseconds.
Ah a pneumatic ram actuated one.
Well if you can build an pneumatic ram then you can build a piston.
If you can build a piston then you can build a piston valve!
If you can build a piston valve then you can trash your ballvalve
Well if you can build an pneumatic ram then you can build a piston.
If you can build a piston then you can build a piston valve!
If you can build a piston valve then you can trash your ballvalve
- sniper hero
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that's what I will do (I made topic on that)
I like the design but I will make it from metal and with a piston
there is only one problem: I can't find 45 degree angles in the right diameter
but you're thinking good before you post I like that
I like the design but I will make it from metal and with a piston
there is only one problem: I can't find 45 degree angles in the right diameter
but you're thinking good before you post I like that
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Ya, but by "opening" do you mean "opened as designed" or as "the entire gun disintegrated"?SpudBlaster15 wrote:However, I'm pretty sure that the ball valve to which I briefly attached a flash powder driven ram opened in only a few milliseconds.
Back to the OP, trying to open a ball valve quickly is really a futile thing to attempt. In the long run, moding a sprinkler valve, or using a stock sprinkler valve, or building a valve from scratch is going to work better and be easier.
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Last edited by SpudBlaster15 on Wed Jul 14, 2021 6:41 pm, edited 1 time in total.
It's good to see that one of us finally tried it.However, I'm pretty sure that the ball valve to which I briefly attached a flash powder driven ram opened in only a few milliseconds.
And if possible, I want to see a picture of whatever was left of the valve and the ram afterward
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.