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Semi-auto BB rifle, 3way Solenoid. WIP Upd: 2/9!

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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Semi-auto BB rifle, 3way Solenoid. WIP Upd: 2/9!

Unread postAuthor: Gnarp » Mon Aug 26, 2013 11:44 am

Hello

Stumbled across this great forum four a while ago!
So i decided to build a 6mm BB gun:P

Got almost everything to make it work!
The plan is to make a semi-auto softair gun that will use regular plastic BB´s and steel.

Spec:
Fire mode: single, burst, auto.
6mm BB
Electric 3 way solonoid 12v/ may switch to 5 way later!
8 Bar pressure.
QEV
Air cylinder reloading.
Arduino fire control.
15x BB magazine or more,

Future upgrade will be a smal compressor to make it handheld:P

PS will upload some real pics later! Just a quick paint pic right now! lol

"New Pic´s and video" 29/8--->
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semiauto.JPG
Some quick drawing in paint!
semiauto.JPG (12.84 KiB) Viewed 1678 times
Last edited by Gnarp on Mon Sep 02, 2013 10:37 am, edited 13 times in total.

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Unread postAuthor: jackssmirkingrevenge » Mon Aug 26, 2013 11:46 am

Looks good :) are you related to POLAND_SPUD heheh
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Unread postAuthor: Gnarp » Mon Aug 26, 2013 12:03 pm

Thanks :p No just a swedish lonewolf. Hehe hop Rubber! Thats some new crap :p
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Unread postAuthor: jackssmirkingrevenge » Mon Aug 26, 2013 12:19 pm

Just because it reminded me of this: http://www.spudfiles.com/forums/i-has-s ... 16872.html
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Unread postAuthor: Gnarp » Mon Aug 26, 2013 12:29 pm

Aha, i see, good thread, missed that one :p
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Unread postAuthor: Gun Freak » Mon Aug 26, 2013 5:17 pm

You might wanna add something to keep multiple bbs from going into the breech, like some hose rubber, similar to the detent.
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Unread postAuthor: Gnarp » Mon Aug 26, 2013 5:54 pm

yes i will do it! if you lock close to the pick it is there! yellow
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Unread postAuthor: Gnarp » Tue Aug 27, 2013 4:16 pm

Two pics! getting there:P
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rsz_spread.jpg
Air cylinder and the bb feeding pipe,
rsz_assembled.jpg
Assembled
Last edited by Gnarp on Tue Aug 27, 2013 4:43 pm, edited 1 time in total.

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Unread postAuthor: wyz2285 » Tue Aug 27, 2013 4:32 pm

Somebody actually not just post a fancy diagram but also the real stuff! Congratulations :thumbright:
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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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Unread postAuthor: Gnarp » Tue Aug 27, 2013 4:37 pm

I think it would be easier to build the magazine in front of the T but that would maybe reduce the flow when the piston resting in the breech?
But less dead space?

I could ad a 5 way solenoid to take care of the loading cylinder!
Just ad a delay in the arduino sketch so the bolt would hold it in forward position for some ms and then release and pick up next BB.... and so on!
More complex but then you could tune the reloading and fire rate digitally.

Any thoughts?
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Unread postAuthor: Gnarp » Tue Aug 27, 2013 4:42 pm

wyz2285

Thank you:P

Have seen your movies! inspired:) Made the QEV from your tutorials and some tips from the air cylinder reloading you made:P
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Unread postAuthor: Gun Freak » Tue Aug 27, 2013 8:15 pm

I agree with wyz, congratulations on actually building it! Its beautiful!! The idea about the 5-way valve is great if you can pull it off! Awaiting a video ;)
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Unread postAuthor: Gnarp » Wed Aug 28, 2013 5:00 am

I think i can do it!
But the hardest part will be the programing:P i dont like it:P haha

Will upload some spudporn later today and show the solenoid controled by the arduino:P
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Testing

Unread postAuthor: Gnarp » Wed Aug 28, 2013 2:27 pm

Testing out the cylinder with a tire valve as rebound spring!
It works but i don´t like the setup! rely hard to get the right pressure!
And 8 bar wouldn't extend it to maximum position whit out to get it close again!


Hmm need to order 2pcs 3way valves or one 5way double solenoid:P

BTW made some own nippels with m4 bolts! Will use fuel hose next time:P easier to make seal prof and softer!

Some pic´s
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Attachments
rsz_img_20130828_210926.jpg
Close up.
rsz_img_20130828_210835.jpg
Test rig.

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Unread postAuthor: Gnarp » Wed Aug 28, 2013 2:29 pm

oops forgot to make the arduino video! to late now! to much noise:P
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