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My gun needs to be lighter Need material info

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: jakethebeast » Tue Oct 16, 2012 4:20 pm

5kg is not that much... my 97k weight 6.3kg without the scope, with the scope its like 7.5... Try to shoot that while standing :wink:
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Unread postAuthor: Zeus » Tue Oct 16, 2012 4:25 pm

archie370 wrote:Stock ... plastic handle plastic , grip plastic ...

btw my bottom airtank is made out of galvanised steel ... so it is heavy ... heavy fittings ... and where my pilot valve is there are a few fittings that are heavy ... so yeah i would say it is 5 kg


I really doubt you've handled any firearms, so if I were you, I'd increase my protein intake, and take advantage of being younger, you'll put on muscle with no work at all.
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Unread postAuthor: Brian the brain » Tue Oct 16, 2012 4:31 pm

Are you planning to take it along on a commercial spaceflight perhaps?

I've made a launcher that would compare to 20 liters of water in weight...


:D
Aluminium works fine.
You could get a small aluminium paintballtank and drill out the valve to increase flow.( and loose a couple of grams of material!)
Just add a brass 1/2"modded solenoid valve triggered by a 1/4"brass ballvalve that doubles as a fillvalve anduse an aluminium barrel.

You should be able to use around 35 bar safely...

You could launch styrofoam projectiles and use helium as a propellant gas if you;re really serious about the weight thing.. :D
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: FighterAce » Tue Oct 16, 2012 6:58 pm

I think what you need is a more efficient launcher.
Using a better valve and higher pressure will allow you to decrease chamber size while maintaining decent power. The majority of the weight of my launchers was, until now, in the barrel. What is your primary ammunition? Perhaps an aluminum barrel will suffice.

My latest project focused mostly on precision. I believe ergonomics has a lot to do with it so weight was one of my primary concerns.

Its not finished yet but heres a sneak peek...
Image

On top is the action... a 3/4 piston valve launcher with a total of 22 brass fittings, aluminum bolt and barrel, full length picatinny rail and some other chunks of metal. With the optic it weighs only 2.3kg!
On the bottom is the beech stock I'll be putting it into. Current weight is 1.2kg but once I finish the outside shape and mill out the valve/chamber area I estimate it will be under 1kg.

This thing was designed from the ground up to be what it is. You cant build a freighter and expect to be able to shrink it down to a jetski and still carry thousands of tons of cargo...
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Unread postAuthor: jackssmirkingrevenge » Tue Oct 16, 2012 11:20 pm

FighterAce wrote:Its not finished yet but heres a sneak peek...


Nice, someone's been busy! Looking forward to see it finished :)
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Unread postAuthor: archie370 » Wed Oct 17, 2012 12:44 am

Haha you not a bad guy i like your humor ... i would but i dont own a bucket ... but i could just use the digital scales that tell you how much you weigh...
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Unread postAuthor: Zeus » Wed Oct 17, 2012 12:46 am

Which are as accurate as a drunk child with epilepsy.

Get on my level, use a 0.00001g resolution balance.
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Unread postAuthor: archie370 » Wed Oct 17, 2012 1:19 am

Zeus wrote:
archie370 wrote:Stock ... plastic handle plastic , grip plastic ...

btw my bottom airtank is made out of galvanised steel ... so it is heavy ... heavy fittings ... and where my pilot valve is there are a few fittings that are heavy ... so yeah i would say it is 5 kg


I really doubt you've handled any firearms, so if I were you, I'd increase my protein intake, and take advantage of being younger, you'll put on muscle with no work at all.


yeah buddy i own a few rifles .303, .22 and an airgun ... ive used M4, Mp5, Fn Scar and a M9 so to answer your question yes i have handled firearms... and i weigh 92.8 kg so im pretty big, but i am trying to make my gun more efficient not compare dick sizes.
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Unread postAuthor: Zeus » Wed Oct 17, 2012 1:23 am

Power to weight ratio for airguns, interesting. Sure those aren't a parent's guns? I've heard many such claims in my time.
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Unread postAuthor: archie370 » Wed Oct 17, 2012 3:30 am

I am under age, but i bought them except for the airgun i inherited that ... and i shot the m4 n crap in vegas 1 and a half ago ...
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Unread postAuthor: archie370 » Wed Oct 17, 2012 3:35 am

yeah, where do you get good scales that measure in grams for chem ...
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Unread postAuthor: Crna Legija » Wed Oct 17, 2012 4:00 am

archie370 wrote:yeah, where do you get good scales that measure in grams for chem ...


ask you local drug dealer
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Unread postAuthor: archie370 » Wed Oct 17, 2012 4:48 am

Crna Legija wrote:
archie370 wrote:yeah, where do you get good scales that measure in grams for chem ...


ask you local drug dealer


Hey Hey Heisenberg :)
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Unread postAuthor: Zeus » Wed Oct 17, 2012 4:37 pm

Check out Ebay for analytical balances, (they are called balances in chemistry, not scales, you upset scientests and lab techs saying scales), or head down to your local gun shop and pick up a reloading balance (they call them scales).

Ebay should be under $500 for a decent balance, but if you only need 0.1/0.01g accuracy, then a $10 pocket balance will do the trick, a lot of pyros use them.
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Unread postAuthor: Brian the brain » Fri Oct 19, 2012 10:30 am

You could replave the heavy reservoir with something made from aluminium.
There are weldingrods on the market for simple electric welders especially for aluminium.

I plan to do so as soon as I learn how to keep the promisses I make... :D

( I gotz more planz than anything else)
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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