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QEV Help

A place to ask general spud cannon related questions.
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QEV Help

Unread postAuthor: benrocks14 » Fri Aug 09, 2013 10:41 pm

Hello spud members! I've built my own pvc air guns before, so I'm not a complete newb. However, I want to step it up and build a QEV air rifle. Looking at the air gun on this website http://www.airgununiverse.net/qevairgun.html. it looks very do able for me. Although, I want to purchase a qev but the link to the qev supplied on the article is non functional. If anybody knows what qev he used or another 1/2 qev that would work, please post a link or useful info. Thank you very much.
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Unread postAuthor: jackssmirkingrevenge » Fri Aug 09, 2013 10:59 pm

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Unread postAuthor: benrocks14 » Sat Aug 10, 2013 8:23 am

Thank you it seems very obvious now that it is pointed out to me haha. My only concern is the pressure ratings on some of the qev's. Most say their pressure rating is about 0 - 140 psi. The rifle I'm building requires around 250 psi. Will these qev's rated at these pressures be able to hold up to the higher pressures my air rifle will utilize?
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Unread postAuthor: jackssmirkingrevenge » Sat Aug 10, 2013 9:21 am

People have used such valves to 600 psi without incident, not recommended to exceed a manufacturer's safety ratings of course but working pressure is normally well below failure pressire so it is extremely unlikely that any ill effect will be suffered at 250 psi.
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Unread postAuthor: benrocks14 » Sat Aug 10, 2013 2:38 pm

Ok thank you, it makes much more sense now. I really appreciate your replies. Gotta go down to my hardware store and get the stuff on my parts list! Hope they don't ask why a fourteen year old needs all this stuff haha
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Unread postAuthor: jackssmirkingrevenge » Sat Aug 10, 2013 2:44 pm

School project ;) always worked for me
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Unread postAuthor: dart guy » Sat Aug 10, 2013 9:12 pm

How old are you jsr?... and also most hardware stores wont care or if you ar telling them you are going sto build somthing, like a dart rifle :D they realy are more interested in the build itself than how dangerous it actualy is.
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Unread postAuthor: Lockednloaded » Sun Aug 11, 2013 12:08 am

I used to say "school project" whenever I was at the hardware store, but nowadays I just tell them exactly what I'm building. Most of the employees love to hear about my projects, and most of the time, they even cut me deals on the stuff I buy. Last weekend, one of the guys working at lowes hooked me up with their employee discount :D
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Unread postAuthor: jackssmirkingrevenge » Sun Aug 11, 2013 2:22 am

dart guy wrote:How old are you jsr?...


30, needless to say it's been a while since I used this excuse :)
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Unread postAuthor: benrocks14 » Sun Aug 11, 2013 11:01 am

Yeah I always say school project like a Rube Goldberg type thing. The only thing that annoys me is that sometimes they give me a hard time whenever I buy spray paint.
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Unread postAuthor: benrocks14 » Sun Aug 11, 2013 11:11 am

The thing is I go to a local ace hardware that had an incident a couple years ago . Some guy bought all the materials he needed for an air rifle of some kind at the ace store , built his rifle, and hurt himself. He tried to sue ace and they don't want to run into this incident again. They have asked me before so I just said a school project but I go there all the time lol. I even know the employees but none of them really know what I'm making... Haha
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Unread postAuthor: dart guy » Sun Aug 11, 2013 12:59 pm

ya know how some peple are retards, well that guy in you story was more than a retard. I would really hate to have that happen to me then have all employees not want to sell things for spudding. (his beond retardedness comes from the fact that he tried to sue because of his own stupidity)
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Unread postAuthor: Blitz » Sun Aug 11, 2013 2:56 pm

Order online, don't have to worry about that at all. :)
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Unread postAuthor: dart guy » Sun Aug 11, 2013 3:11 pm

i like stores because you can visualy inspect the products
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Unread postAuthor: Blitz » Sun Aug 11, 2013 3:18 pm

I do too. In fact, I made a scale model of my current project for that same reason. I mean, if you're ever asked what you're doing with them, you're not obligated to say. Just give a generic answer, like you're helping around the house, if anything.

I personally don't have a problem in the rare case I'm asked; in fact most people dig it. Although I don't always go into details. I may say I want something for a sliding rail for example, but not for a cannon. :)
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