Yet another QEV multishot

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
Shichimi
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Thu May 10, 2012 7:04 am

Hello guys, this is my first gun and first post.
Nothing new - some china QEV,galvanized pipe as chamber,16mm ID barrel and 100-120 psi operating pressure.(takes some time with my puny shock pump)
It can shot 2 or 3 times before pressure drops to somewhere about "hey-its-not-shootin-its-just-farting" :D
I use dart as projectile(nothing special here - just nail, paper amd some glue)
Here some shooting video and damage
[youtube][/youtube]

PS.And sorry for my bad engrish, i am half chinese\half russian :roll:
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jackssmirkingrevenge
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Thu May 10, 2012 7:22 am

Not bad :)

By simply adding a slide valve as a pilot and a small sub chamber you will make it much more efficient: http://www.spudfiles.com/forums/semi-au ... 23626.html

I would suggest getting your hands on a track pump, something like this:







That will let you get past 200 psi with much more ease than what you're struggling with to achieve with the shock pump.

Alternatively, a cheaper and less tiring solution is simply to use a fridge compressor, which gives you upwards of 500 psi for no effort.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Shichimi
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Thu May 10, 2012 7:29 am

Thanks for advices!)
I already buyed slide valve from ebay but recieved it damaged.It leak on any position :(
I was just planning to buy a track pump,but cannot decide which is better serfas fmp 500 or 3 stage topeak joeblow?
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jackssmirkingrevenge
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Thu May 10, 2012 7:39 am

I have no experience with either pump.

Sure you don't want to try a fridgy first? Don't you huh? ;D
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Crna Legija
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Thu May 10, 2012 7:42 am

jackssmirkingrevenge wrote:Sure you don't want to try a fridgy first? Don't you huh? ;D
I too say get a fridge much better and most of the time its free all you need is a pressure gauge and you already have on on your shock pump.
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Shichimi
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Thu May 10, 2012 7:52 am

jackssmirkingrevenge wrote:I have no experience with either pump.

Sure you don't want to try a fridgy first? Don't you huh? ;D
Sure fridgy is a good choice,but i do not have acces to it right now.(tryed to ask friends for broken fridges and some scrap yards,still no luck)
It is good for indoors but most of the time i shooting outdors (i have some small forest near my home)so i need mobile air source :)
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jackssmirkingrevenge
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Thu May 10, 2012 8:03 am

In that case, a track pump is your best bet.

Unless you're feeling creative: http://www.spudfiles.com/forums/easy-st ... 13277.html
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Thu May 10, 2012 11:38 am

jackssmirkingrevenge wrote:Alternatively, a cheaper and less tiring solution is simply to use a fridge compressor, which gives you upwards of 500 psi for no effort.
Mine reaches 1500 psi :D
Where's my Chuck key?
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