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homemade airsoft rifle

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homemade airsoft rifle

Unread postAuthor: flashskate13 » Tue Feb 05, 2013 10:28 am

Hello,

I'm new here, after I finish my slingshot rifle I need a new project and come across wyz2285 videos on YouTube of he's airsoft rifle, so I done more searching I now no I need a qev and 3 way valve found these on eBay but are they right for the job?

http://www.ebay.co.uk/itm/380537985051? ... 1423.l2649

http://www.ebay.co.uk/itm/360532633739? ... 1423.l2649

And what I am trying to get my head around is the setup.

Gas tank to regulator to ????
Or use full links

Hope someone can help
Rick
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Unread postAuthor: flashskate13 » Tue Feb 05, 2013 1:54 pm

Also found this qev

http://www.ebay.co.uk/itm/360537518850? ... 1423.l2649

Will be to firer 6mm metal bearings
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Unread postAuthor: jackssmirkingrevenge » Wed Feb 06, 2013 2:02 am

Have a look here for a more detailed explanation of the setup: http://www.spudfiles.com/forums/semi-au ... 23626.html
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Unread postAuthor: flashskate13 » Wed Feb 06, 2013 9:19 am

Hi,

Thanks for the link much appreciated cleared a lot of questions I would have asked.

Now to get parts.
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Unread postAuthor: flashskate13 » Sat Feb 09, 2013 3:17 am

This is What I want it to look like,


Not sure on making it out of aluminium and stainless steel or fibreglass and carbon fibre.
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Unread postAuthor: flashskate13 » Sat Feb 09, 2013 3:28 am

Also I need to workout chamber size.

To firer .25g bb
And where I go has a 450fps limit on bolt action rifles

Thanks
Rick
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Unread postAuthor: jackssmirkingrevenge » Sat Feb 09, 2013 3:34 am

Anti materiel rifles usually aren't that difficult to model given their function driven shape.

Have a look at the Leader 50: http://olegvolk.net/blog/2012/01/07/jus ... the-range/

The body is basically an aluminum extrusion.
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Unread postAuthor: flashskate13 » Sun Feb 10, 2013 3:02 am

Thanks for the link it is a pretty simple design for a rifle. And not a overly big rifle.

I like bullpup style rifles just waiting on my pneumatic parts to be delivered so I can get a ruff idea of dimensions

Just designing a bolt for it now shouldn't be to hard only has to travel just over 6 mm
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Unread postAuthor: flashskate13 » Sun Feb 10, 2013 3:03 am

Thanks for the link it is a pretty simple design for a rifle. And not a overly big rifle.

I like bullpup style rifles just waiting on my pneumatic parts to be delivered so I can get a ruff idea of dimensions

Just designing a bolt for it now shouldn't be to hard only has to travel just over 6 mm
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Unread postAuthor: flashskate13 » Sun Feb 10, 2013 3:16 am

Also this is the qev I brought,
But the listing tells me its 1/4 but the measurements in the pic make no sense!

Ideally I want to reduce the exhaust port but don't know the size 18mm is 45/64 or is it meant to be 5/8?
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$(KGrHqF,!g0FC2mWVZYeBQwzkD3l9Q~~60_12.JPG
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Unread postAuthor: jackssmirkingrevenge » Sun Feb 10, 2013 7:08 am

Yeah, the thread sizes are pretty weird. I'm guessing the 18mm dimension is actually 1/2" BSP.
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Unread postAuthor: flashskate13 » Sun Feb 10, 2013 10:14 am

Yeah they are abit odd.

how do I work out chamber size?
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Unread postAuthor: flashskate13 » Sun Feb 10, 2013 10:27 am

Because of it being a bull pup design if I have the qev at the front of the rifle and lead 6mm pipe from qev to the back of the rifle would there be a problem as it would reduce pressure behind the bb?
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Unread postAuthor: flashskate13 » Tue Feb 12, 2013 1:25 am

OK so done a bit of searching last night and come across this.

http://www.ukmonsters.co.uk/dsr1/dsr1.htm

And a video on YouTube.

http://www.youtube.com/watch?v=EqCAc16rZwk

Now that's a build I want to achieve.
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Unread postAuthor: jackssmirkingrevenge » Tue Feb 12, 2013 1:53 am

The guy is pretty well known in airsoft, bit hard to replicate his results without proper machine tools though. I think what you should be aspiring to is this guy: http://www.thefirearmblog.com/blog/2012 ... -scissors/
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