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6mm sniper

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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Unread postAuthor: bobgengeskahn » Thu Mar 04, 2010 2:40 am

ive been lurking for a while and have been looking into doing basically the same thing that you are....

I'm looking at running around 200 psi +/-, but im also not concerned with making it field legal all the time (i.e. I want to be able to go over 550fps if I want to). There was a thread (that i would post the link to, but I'm not on my computer atm so i dont have the bookmark) in which someone designed a piston valve that was self sealing when fired and had no air loss... I'll try to get back on when I have the chance and post a link or a pic, but operating at low psi, like you would have to with airsoft, air loss is a big deal and would slow down your rof and also waste air, thus shortening your play time on a tank.

I've been thinking that I'm going to go with some kind of hammer valve... im working out some of the design details before i post it up on the forum for some feedback...
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Unread postAuthor: CpTn_lAw » Thu Mar 04, 2010 6:08 am

Well, for the speed limit, you can always chrono your gun while changing the regulator output, and make little white spots for each "xx" fps gained.

For airsoft , a hammer-valve is really the best i think. You won't waste air, you get the semi-auto easily.....
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Unread postAuthor: bobgengeskahn » Thu Mar 04, 2010 4:51 pm

oh yaaaaaaaa... here it is, Clydes GP semi:
http://www.spudfiles.com/forums/gb-semi-t7899.html


... and for the record :D
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Unread postAuthor: bobgengeskahn » Thu Mar 04, 2010 5:42 pm

anyways, ive had a slow morning so i got on paint... this is what ive basically decided on for my similar project... hope it helps...
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Attachments
aaaaaa.GIF
the larger spring in the back is a 1" spring and is housed in a normal sch40. PVC pipe. the over all larger pipe is a sch80 pvc/abs pipe. The psi rating on sch80 1.5" is about 300-400 psi, well over what i want to be operating at. this is a picture of the system at rest.
aaaaaa.GIF (13.19 KiB) Viewed 447 times

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