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Work so far . . . totally portable bbmg

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Work so far . . . totally portable bbmg

Unread postAuthor: revans » Fri May 23, 2008 4:17 am

I decided for my next project to make a bbmg and since I don't have an air compressor and have no plans to buy one I been trying to make a fully portable one that runs off a bike pump. I got the idea for a pump from kangsta's bbmg as well as kash munni's and having been trying to integrate it into the design, sort of in a super-soaker kind of way (you know, pump under barrel, pump away then fire). I reckon it should turn out pretty good, not being quite as ghetto as the creations that inspired it :wink: assuming that it will actually work :lol: This is what I've got so far, you'll probably need to enlarge it to read the labels, sorry.
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I'm in the process of getting the last couple bits and pieces before I really finish it off. Just looking for any opinions or comments or suggestions to see what you guys think before its done and dusted. Cheers.

EDIT: In case anyone wants to know its made of 20mm (3/4") and 25mm (1") pressure pvc. The thicker bits (handle, bb reservoir, lower chamber) are 25mm and the thinner bits (main chamber section, top section) are 20mm.

ALSO: Is there any kind of limit on how long a bb barrel should be? I remember from somewhere that: longer barrel = faster velocity, slower rof and vice versa (I *think*).
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Last edited by revans on Fri May 23, 2008 4:08 pm, edited 1 time in total.
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Unread postAuthor: MrCrowley » Fri May 23, 2008 4:41 am

Looks good, not sure how well it will work though.


BTW, where did you get that barrel from? :)
Been looking all over. Did you order it from Acorn Models?
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Unread postAuthor: Carlman » Fri May 23, 2008 4:52 am

MrCrowley wrote:Looks good, not sure how well it will work though.


BTW, where did you get that barrel from? :)
Been looking all over. Did you order it from Acorn Models?


i get mine from a hobby shop in ausland, all of the hobby shops have it here.
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Unread postAuthor: revans » Fri May 23, 2008 3:55 pm

Yeah barrel was from Acorn Models. I pretty sure it was 9/32" round brass tube, the one I got was 36" long so enough for at least 2 or 3 barrels.

I also don't really mind if it doesn't go crazy good, as long as it shoots bbs. If its not powerful then I can shoot people for harmless fun :wink:

Edits @ Crowley: More to the point, do you think it will work at all? (please say yes :lol:)
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Unread postAuthor: MrCrowley » Fri May 23, 2008 4:32 pm

You'll probably get one decent burst of about a second or two before it will start dribbling out.
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Unread postAuthor: revans » Fri May 23, 2008 4:46 pm

All good, just need to keep pumping :D Its not like I want to use it in an airsoft thing like some people on here do. It's just a cool project to make, so as long as it works I'll be happy.
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Unread postAuthor: dudeman508 » Thu Jul 24, 2008 11:51 am

I think you could get more that one burst, becouse i made a 120psi bike pump gun before i got a compresor
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Unread postAuthor: Carlman » Thu Jul 24, 2008 11:58 am

dudeman508 wrote:I think you could get more that one burst, becouse i made a 120psi bike pump gun before i got a compresor


and your point is..

he will not get more than a few bursts as vortex style bbmgs take a lot of air to run.
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Unread postAuthor: Brian the brain » Thu Jul 24, 2008 2:04 pm

A second of bbbrrpp
is enough when it comes to airsoft battles.

That will take out your opponent.And you can still pump some more after that, so...it should be a lot of fun!
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