we g36 drum mag

[surebet]

Well that's a photo I pulled off Google, but IIRC under 4 inches?

The ASA thread is .85 inches wide, plus the red thread protector gives about 1.25, more or less three times that large total eyeballing.

[ebfud]

could work if cooldown becomes an issue.

heres my afternoons work on CAD, just rough lengths right now waiting on my mag in the mail.

[Kos-Mos]

Best solution would be to have a gaz reservoir machined to fit on one side, and build a simple coil/spring feed tube on the other side. There is enough space to fit over 500 BBs in a tube. The mag you have ordered can be taken appart, the center "mag" section is removeable. You would need to modify the existing mag to fit a coupling near the strike valve, and run a line from the coupling to the reservoir. That would also act as an expansion chamber if done properly and will help with the cooldown. There is enough space for 100-150 rounds, maybe more if you use CO2.

And that 4oz bottle does not fit in any dimension in the mag. The drum is the same depth as a regular mag. The round sections are about 3" dia.

[Ninja_En_Short]

Errr... I think the point of that thing is not to hold as much rounds as possible, plus 500 hundred is way too many for a tank only half the size of the mag.
I don't know for you bu I'd rather change C-mag and put a new one in than refill the tank in the middle of battle.

[ebfud]

there arnt 500 in a real one, im thinking around 200-250 more than normal but not silly.

anyways drum mag is in and gutted already. if anyone needs spare dboys drum mag parts let me know. working on a design for the gas chamber on one side and bb the other. pics later on

[Mitchell12]

Please do keep us informed this sounds interesting!

[ebfud]

well after making my initial designs the emachineshop site wants over $300 for the parts even as abs prototypes. would anyone be able to point me in the direction of other similar sites? thanks

[Dynamo]

Originally Posted by ebfud

well after making my initial designs the emachineshop site wants over $300 for the parts even as abs prototypes. would anyone be able to point me in the direction of other similar sites? thanks

i had some prototyping work made with these guys. http://www.novaproduct.com/ .. i dont think it'll be any cheaper, but it's nice to have options.

[Ninja_En_Short]

Prototyping usually costs a lot more than mass production, nothing surprising.
My rifles prototypes with carbon barrels cost me 5000$ each (5 in total). The 5 mass production ones were made for 2300 a piece.
Nothing surprising with your 300$, I don't think you will get a lot cheaper unless you know someone working in the field who can make it for you.

[ebfud]

il check them out. there stuff is more reasonable when you just get it made right from aluminium but making all the small adjustments so designs can be made by them is time consuming. oh well if it works maybe i can mass produce the parts for less

[Ninja_En_Short]

You have a taker right here

[ebfud]

probably make alot too seeing as we wont be making em lol

[ebfud]

okay heres the latest design for the tank, it will snugly fit into the left side of the mag and leave the right for the bb tube. i have a matching cap that will fit into the top also. the lip at the bottom right is the same dimensions as the bottom of the upper part of a standard g36 mag so its as simple as bolting the two together, no need for a custom top.
currently looking at just a little over $200 for both parts it includes shipping but i will have to put it on hold for the moment

[ebfud]

Originally Posted by Dynamo

i had some prototyping work made with these guys. http://www.novaproduct.com/ .. i dont think it'll be any cheaper, but it's nice to have options.

there in country for a start so a little saving on shipping

[Ninja_En_Short]

If I may : make the bottom part a little bit thicker, at leat 4 mm of contact for the seal to be effective and not that 1mm crap WE puts in the mags.