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NEW VERSION of an OLD VALVE (supah)

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: Infernal2 » Sat Mar 10, 2007 8:24 pm

Seal material and not revealing it. Hmm, looks like soft-core vinyl but that's just my opinion. Nice looking though, minus the cracks and stains. My question is what would make us purchase yours over say the Mauler? Oh, and I'm 29, have a chronometer, a good bit of experience, am a business owner and part time machinist.
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Unread postAuthor: sgort87 » Sun Mar 11, 2007 3:02 pm

Just to toss this in, I recently chronied the Mauler vs the Supah and got higher results out of the Mauler.
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Unread postAuthor: VH_man » Sun Mar 11, 2007 3:24 pm

I think this fourm needs a chart that gives people pneumatic size charts. like a chart with 3 collums:
Valve Type
Chamber Size
Barrel Size
Chronograph reading with 1 Kg projectile

Its for the people who dont know how to use GGDT. it would help alot with all the people asking questions about "What valve do i use?" or "whats the best pneumatic ratio?". Just a thought.
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Unread postAuthor: iknowmy3tables » Sun Mar 11, 2007 5:01 pm

I don't get it how can it be all the presure being applied on the entire area of the piston actuate slower than a piston with a vacum in the center. why the hell would we even take the extra effort tho make chammber sealing pistons valve , do we if it's not faster
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Unread postAuthor: jrrdw » Sun Mar 11, 2007 5:21 pm

sgort87 wrote:Just to toss this in, I recently chronied the Mauler vs the Supah and got higher results out of the Mauler.


What where the numbers? Please.
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Unread postAuthor: LGM » Sun Mar 11, 2007 5:31 pm

Yeah, post the numbers for the valves. Perhaps to increase sales once you go into business, you could make a larger model like the megah valve joel is working on.
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Unread postAuthor: joannaardway » Mon Mar 12, 2007 7:04 am

iknowmy3tables wrote:I don't get it how can it be all the presure being applied on the entire area of the piston actuate slower than a piston with a vacum in the center. why the hell would we even take the extra effort tho make chammber sealing pistons valve , do we if it's not faster

Because the pilot pressure is much lower on a Barrel sealer when it actuates. The overall force is therefore much higher when the whole piston area is exposed, and it'll accelerate much faster.

The true bonus of a chamber sealer is that it can be filled from the chamber far more easily.
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Unread postAuthor: iknowmy3tables » Mon Mar 12, 2007 11:10 am

how can a chammber sealer be filled from the chamber.

but the chammber sealer should be able to open in a shorter amout of time right
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Unread postAuthor: sgort87 » Mon Mar 12, 2007 12:06 pm

Nope. Barrel sealers open faster.

So with a very large chamber, Maulers do better by about 20 FPS. I will be trying it with a smaller chamber in the next couple days and I expect that the Mauler will do even better on this test.
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Unread postAuthor: dsignguy » Mon Mar 12, 2007 1:19 pm

working on getting my own lathe so I dont have to impose on my friends, and I can get stuff done faster. more valve updates and pics soon.
As for the megah... one serious safgety issue- the back cap is approx. 4.5" in diameter, which will give you just over 15"sq. of surface area.lets say you fill the chamber to 100psi (less then most of you probably use),
that = 1500 POUNDS OF FORCE pushing onthe back cap.eventually, either the PVC T, or the back cap WILL fail, and it will be a very bad situation, especially for anyone standing behind the valve.
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Unread postAuthor: dsignguy » Mon Mar 12, 2007 1:25 pm

Infernal2 wrote:Seal material and not revealing it. Hmm, looks like soft-core vinyl but that's just my opinion. Nice looking though, minus the cracks and stains. My question is what would make us purchase yours over say the Mauler? Oh, and I'm 29, have a chronometer, a good bit of experience, am a business owner and part time machinist.



nope. not vinyl.

price and quality, and versitility (the ability to make it either a barrel or chamber sealer by one simple adjustment)
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Unread postAuthor: drac » Mon Mar 12, 2007 4:02 pm

dsignguy wrote:working on getting my own lathe so I dont have to impose on my friends, and I can get stuff done faster. more valve updates and pics soon.
As for the megah... one serious safgety issue- the back cap is approx. 4.5" in diameter, which will give you just over 15"sq. of surface area.lets say you fill the chamber to 100psi (less then most of you probably use),
that = 1500 POUNDS OF FORCE pushing onthe back cap.eventually, either the PVC T, or the back cap WILL fail, and it will be a very bad situation, especially for anyone standing behind the valve.


Which is why you put a bumper, in the form of rubber, or a spring (which could aid in sealing)
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Unread postAuthor: dsignguy » Tue Mar 13, 2007 5:50 pm

drac wrote:
dsignguy wrote:working on getting my own lathe so I dont have to impose on my friends, and I can get stuff done faster. more valve updates and pics soon.
As for the megah... one serious safgety issue- the back cap is approx. 4.5" in diameter, which will give you just over 15"sq. of surface area.lets say you fill the chamber to 100psi (less then most of you probably use),
that = 1500 POUNDS OF FORCE pushing onthe back cap.eventually, either the PVC T, or the back cap WILL fail, and it will be a very bad situation, especially for anyone standing behind the valve.


Which is why you put a bumper, in the form of rubber, or a spring (which could aid in sealing)


I have a neoprene bumper, and a spring, but i'm not talking about the impact force from thr piston slamming back, thats not an issue. I'm talking about the force on the cap generated by the air pressure that is hols the piston forward and the valve closed.
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Unread postAuthor: athleteforever » Sat Mar 17, 2007 5:48 pm

Are the top guns on the market you say scenario markers. I am wondering, because I find it hard to believe that your work has created Ego's, Dm's, Timmys, and Shockers. Which are all speedball guns, and on the top of the market.
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Unread postAuthor: sgort87 » Sat Mar 17, 2007 8:19 pm

What are you asking? Reference the post of which you are speaking.
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