Multishot qev

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
Haniball1337
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Wed May 15, 2019 10:52 am

Ye its me noob, i am wanted to build the simple multishot airsoft gun with qev, And when i was searching youtube i found this and i make something similar to this and like always for me it dont work xD It shoot but it use all air in chamber . What can be the problem? (Slide valve is here beacuse i am lazy and i dont wanna to unscrew it )
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farcticox1
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Wed May 15, 2019 4:57 pm

Swan Donovan has a good multi shot system.

[youtube][/youtube]
[youtube][/youtube]
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wyz2285
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Wed May 15, 2019 5:57 pm

I made that system back when I was a teen :lol:
For it to work you need a piston that has spring in the back and allows to be filled from chamber side.
If your QEV is bought un modified, take a 1mm wire and poke a hole in the piston (not in the middle or you get leaks, poke it where the thick rubber meets with the rubber skirt), then add a weak spring behind it. Then it should work.
CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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farcticox1
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Thu May 16, 2019 4:46 am

[youtube][/youtube]
Haniball1337
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Thu May 16, 2019 9:25 am

Ok thanks a lot guys , i have one more question. Will that work with normal compressor blowgun ? but shrader valve will be on the end of blowgun
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wyz2285
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Thu May 16, 2019 1:51 pm

I came up with a similar design too as my first "semi auto".
The idea is to limit the exhaust volume so the QEV would close. I made a check valve with tiny leaks instead of the shrader so I don't have to manually reset the shrader.
Basically one side of the blowgun connects to the QEV the other side has to have a valve, be it a shrader, ball valve or check valve. You can play with the exhaust volume too for different output power from the QEV
CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
Haniball1337
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Thu May 16, 2019 2:18 pm

So it will work? and i dont need any spring then?
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wyz2285
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Thu May 16, 2019 2:30 pm

You still need it.
CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
Haniball1337
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Thu May 16, 2019 2:36 pm

but no hole in piston?
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wyz2285
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Thu May 16, 2019 4:49 pm

You still need the hole too.
The QEV need modification in all cases, except when you're using a 3 way/slide valve setup.
CpTn_lAw wrote: :D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
Haniball1337
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Sun May 19, 2019 4:45 am

Another question, I want to make hole and add spring but i want too to shoot one shot with this? Will hole and spring deacrese power with one shot? With spring and hole can i fill the chamber from pilot port? or only from chamber port?
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