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my auto piston

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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my auto piston

Unread postAuthor: suture self » Wed Feb 11, 2009 8:55 pm

first post but i've been lurking awhile, first off i've built clouds before, i'm not a total noob but i decided it was time to step it up and do a piston gun, i started looking at the swanstrom design and started working on it but mine took on a style of its own 8) i made a working prototype except for the "bolt return line" (see diagram) i need to get the brass tee. as you can imagine without it the bolt floats half open and empties ungodly fast :twisted: :shock:
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Unread postAuthor: Sticky_Tape » Wed Feb 11, 2009 9:06 pm

Where da diagram WHERE da diagram?
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Unread postAuthor: roboman » Wed Feb 11, 2009 10:24 pm

None of us can really visualize what you're trying to say without the diagram that you're referring to. Please post it. :)
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Unread postAuthor: Eddbot » Wed Feb 11, 2009 10:53 pm

It seems one of the mods got the parroting from earlier...

But I think I found the diagram he was talking about...linky...
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Unread postAuthor: suture self » Thu Feb 12, 2009 10:04 am

eek sorry guys thought i had it posted right, maybe i am a newb! i'll try again its kinda a variant of the swanstrom.
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Unread postAuthor: suture self » Thu Feb 12, 2009 10:16 am

it says my extension is not allowed? does that mean its too big? :?
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Unread postAuthor: jackssmirkingrevenge » Thu Feb 12, 2009 10:25 am

It could be the wrong format, if you made it in paint make sure you saved as .jpg or .gif, not .bmp
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i think i got it...

Unread postAuthor: suture self » Thu Feb 12, 2009 10:49 am

thanks jsr, sorry about the crappy quality i hope you guys can figure it out
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Unread postAuthor: suture self » Thu Feb 12, 2009 1:24 pm

you guys think it'll work when i get the tee put in? any suggestions for a high cap mag or loading system? i kinda built this as a proof of concept type thing but since it appears to be a success i wanna add some ammo :wink:
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Unread postAuthor: inonickname » Fri Feb 13, 2009 3:56 am

Try not to double post. If needed, use the edit button.

Should work if your building it close to a common/commercial design. May not be as efficient but oh well... I'd go for realism with something like a med cap perhaps..or if you want pure capacity a hopper (like pb) with an assist mechanism.
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Unread postAuthor: suture self » Fri Feb 13, 2009 11:22 am

Thanks, i was kinda looking for specific ideas on feeding it though, i've thought about something like a pill bottle with a rotating "wheel" spun by a dc motor at the bottom having several bb sized slots at the edge that would line up with a hole in the bottle several times per revolution, basically a pb e hopper. 8)
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Unread postAuthor: iknowmy3tables » Fri Feb 13, 2009 3:01 pm

no offense to your craftsmanship, but there are so many seals that have made at the right distances apart from each other, so I wouldn't count on it the design's gotta be simplified
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