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XM8 Cap Vortex BBMG

Built a BB Machine Gun? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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XM8 Cap Vortex BBMG

Unread postAuthor: Qmyxpa0c1l34 » Fri Jun 17, 2011 3:01 pm

Hello everybody, this is my first BBMG. For this project i decided to go with a cap vortex design since it allowed me to use 3/4 in PVC, which fits in the body of the XM8. This design uses a 13 in PVC tube with an elbow and a cap. the trigger is just a simple blowgun trigger with a 1/4 in brass tube going out of the gun. The brass tube has a 1/4 in quick connect fitting. The other side of the blowgun goes to the cap vortex via a 1/8 in plastic tube which is connected to two 1/8 in brass fittings. The 6mm bb's are pushed into the cap vortex by a plunger. The barrel is 365mm long and about 6.1mm in diameter. Overall this gun performs well; 350 - 400 fps with .12g bb's at 50 - 75 rps. The gun is also very solid and strong. There is a link under this that will take you to a video of the gun shooting and I have also posted many pictures that show how i build this gun. Please leave comments and tell me what you think or if you have any suggesting/ questions. Thanks. (:

http://youtu.be/PZxaE0j28k4
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Attachments
Screen shot 2011-06-17 at 3.05.48 PM.png
This is the initial design done on sketch pad
CIMG9793.png
The first part of the build required me to dermal out most of the extra plastic.
CIMG9795.png
The trigger mechanism
CIMG9785.png
The internal cap vortex system
CIMG9802.PnG
The whole internal mechanism laid out
CIMG9806.Png
The cap vortex and trigger mechanism apparatus completed
CIMG9809.png
The final product
CIMG9811.png
The final product
CIMG9812.pnG
The final product
CIMG9814.PnG
The final product
CIMG9820.PnG
The final product
Last edited by Qmyxpa0c1l34 on Fri Jun 17, 2011 10:51 pm, edited 2 times in total.

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Unread postAuthor: warhead052 » Fri Jun 17, 2011 3:10 pm

Wow, just wow. Thats incredible and very nice. Where did you get the body for the XM8?
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Unread postAuthor: Qmyxpa0c1l34 » Fri Jun 17, 2011 3:18 pm

Thank you very much, i got the XM8 body of Hobbytron. Here is a link http://www.hobbytron.com/SpringSM8Machi ... 16327.html[/quote]
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Unread postAuthor: Gun Freak » Fri Jun 17, 2011 3:26 pm

Thats cool... too bad its a vortex... How about a video?? :wink:
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Unread postAuthor: warhead052 » Fri Jun 17, 2011 3:37 pm

Ah ok. Hobby tron does have alot of cheap stuff that works for what we need right?
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Unread postAuthor: Qmyxpa0c1l34 » Fri Jun 17, 2011 4:10 pm

warhead052 wrote:Ah ok. Hobby tron does have alot of cheap stuff that works for what we need right?

Yes, surprisingly the XM8 body is very durable.
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Unread postAuthor: warhead052 » Fri Jun 17, 2011 4:19 pm

How strong is it on a scale of 1 to 10?

Edit, Can you add some close up pictures of your set up? I would like to see the vortex assembly inside half of the body unless I missed the picture...
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Unread postAuthor: cammyd32 » Fri Jun 17, 2011 4:46 pm

Good work there on putting your mech into a shell, how have you attached the mech in there?
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Unread postAuthor: Qmyxpa0c1l34 » Fri Jun 17, 2011 4:55 pm

cammyd32 wrote:Good work there on putting your mech into a shell, how have you attached the mech in there?

I grinned out the body to specifically fit the 3/4 in pvc tube
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CIMG9785.png
The body

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Unread postAuthor: Qmyxpa0c1l34 » Fri Jun 17, 2011 4:58 pm

warhead052 wrote:How strong is it on a scale of 1 to 10?

Edit, Can you add some close up pictures of your set up? I would like to see the vortex assembly inside half of the body unless I missed the picture...

The gun is about an 8 or 9.
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Attachments
CIMG9802.PnG
And here is a picture of the interior apparatus

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Unread postAuthor: cammyd32 » Fri Jun 17, 2011 5:06 pm

Nice work in doing that :D good job in getting it robust! I know how difficult it is to get a shell to fit something inside it perfectly, once I tried fitting a blowgun into a cheap pistol shell- 3 pistols later it still rattled. :D
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Unread postAuthor: warhead052 » Fri Jun 17, 2011 5:52 pm

Ok. Well it looks pretty good. Good job, I wish I had something like that.


Now heres a little task for you, try and make a regulator compressed air tank, small enough to carry in a back pack or strapped to your leg. co2 does not count.
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Unread postAuthor: Qmyxpa0c1l34 » Fri Jun 17, 2011 10:09 pm

warhead052 wrote:Ok. Well it looks pretty good. Good job, I wish I had something like that.


Now heres a little task for you, try and make a regulator compressed air tank, small enough to carry in a back pack or strapped to your leg. co2 does not count.


First of all thank you for the kind comment. Second I already have a design for a portable HPA setup. First, you would use a simple 3000/4500 psi 1-2 lbs tank. Second, you would hook up a Palmers Pursuit stabilizer to the HPA tank, which would then hook up to the quick release fitting on the blowgun. This set up would allow for thousands of bb's to be fired on one fill and give you the ability to regulate to airflow from as low as 60 psi to as much as 600 psi. This set up, however, would be expensive, running you around $170 usd.
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TKNDX45KL_big.jpg
Generic HPA tank
TKNDX45KL_big.jpg (24.96 KiB) Viewed 3148 times
DSC03240.jpg
Female Stabilizer Remote Hose Assembly
DSC03240.jpg (24.03 KiB) Viewed 3148 times
polarstar18.jpg
This is ruffly what the setup would look like.

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Unread postAuthor: warhead052 » Sat Jun 18, 2011 10:48 am

Where as you can get a empty 20oz co2 bottle, find a way to use a fridge compressor to fill it up to about 750 - 900 psi, and then attach a regulator to it and done.
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Unread postAuthor: soixe1997 » Thu Aug 11, 2011 6:41 pm

beastly :twisted:
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