pvc sniper air combuster rifle

im makeing a new sniper made from verious PVC size piping useing a bike pump to fill 2 50mm by 100mm tanks but i still have to sort out the trigger and release mechanism i have already got idea's for the barrel and the stock. Any ideas on this feel free to post as im hopeing to have it done by friday. Thanks

Combustion?? If you plan on using it out of your house i would not recommend it.

This sounds like a basic home made, good luck.
The simplest form of a trigger would be a ball valve.
I once tried to use a hose handle thingo, it was the first homemade that i tried making to it wasn't to good but i think if you use the right things its could turn out pretty awesome.
-Adam-
P.S Try not to use the word 'sniper' to much on these forums alot of people often get there flame on when someone uses a milsim sought of term.
But anyway all the best and please post photos of your build and how you did it XD

I'd just like to point out that these are illeagal in australia.

Biggles

yea im not going overboard with this make to the point where i end up badly hurting someone lol its going to be at a regular PSI rate and only useing airsoft darts with it but when its done ill put a pic up

radiantraidercs-35 wrote:yea im not going overboard with this make to the point where i end up badly hurting someone lol its going to be at a regular PSI rate and only useing airsoft darts with it but when its done ill put a pic up

1. You might want to fix up your capitals in sentences or else admins will rage.

2. I reckon to 'regulate' the PSI Rate you should use like a hand pump (one that can go up to max of I dunno, whatever pressure you want). That way you know that you'll never go pass the limit since you won'tbe able to over pump it. I don't know LOL. Just saying. + would be more portable.

By "combuster" do you mean to say that it is combustion based?? The title isn't very clear

Regular Psi?? So atmospherics pressure a.k.a Zero?

Any gun which uses compressed air is illegal in Aus. You may notice that many nerf guns also use compressed air... not sure whats up with that :\ not very consistent laws.

I just saw that you are 22, you will be charged with possession of arms if the "PoPo" see it.

I think it may have something to do with it having a 'rubber' air bladder.

Idk man, from what i saw, the only propulsion methods which are acceptable are things which use elastic energy aka bows and slingshots, or electrical like plasma or rail guns.

Yes i do refer to plasma as the fourth state of matter which is used in the metal industry to cut metal, and not the technologies used on halo...

But if you do build a PVC rifle, I'm your man when it comes to info. Are you planning on making a musket or are you going to try and make a bolt action system which takes darts from a clip?

Is it going to be single shot or are you going to attempt 'multi shot'?

bolt action multi shot ideas for the gun will probebly wait a little while but ill be goin with the single fed airsoft darts for now. thanks for advise though ill keep u posted on the progress

i made one of these things once a few years ago i would recomend useing a ball valve rather than hose trigger it has a far better seal

How about a Quick-release Valve? I'm pretty sure they have them at Bunnings?

Uhh its exactly what i think.

Tank --> Tubing --> Quick Release --> Barrel --> Shoot dart
http://www.rowland2.com/pdfs/qrv.pdf
also, Have you ever watched Mythbusters they use them in everything

Oh... sorry then that wa sthe one i was talking about

Yep that's right. Qrv's or Qev's are commonly used in air rifles (of the DIY kind) and they release air a lot faster. If i had to give it a number i would say they are 1.5x faster than a spring actuated ball valve.

go to a plumber store etc."
go nuts on the variety of valves.

iv seen guys use a rainbird borewater pump valve system on a orange cannon.
quick release and i think they go for 20$ and they just bolt on with a thread.

I dont' know if you're still building this, but a few ideas for you if you are.

Use a modified sprinkler valve

Linky
http://www.spudfiles.com/forums/viewtopic.php?t=305

That will beat a ball valve hands down every time. And its not to complicated

Secondly,

(start rant) Don't be an idiot. The toy you think you are making is not a toy, it could hurt someone. Don't fire it at people, dogs, cats or whatever, don't even fire it near where people MIGHT be, and for Gods sake, don't use it in public! (end of rant)

But I have made one and they are loads of fun, and I hope it goes well for you.

Also pressures above about 20 psi will destroy a nerf bullet. Just FYI.

aardman wrote:I dont' know if you're still building this, but a few ideas for you if you are.

Use a modified sprinkler valve

Linky
http://www.spudfiles.com/forums/viewtopic.php?t=305

That will beat a ball valve hands down every time. And its not to complicated

Secondly,

(start rant) Don't be an idiot. The toy you think you are making is not a toy, it could hurt someone. Don't fire it at people, dogs, cats or whatever, don't even fire it near where people MIGHT be, and for Gods sake, don't use it in public! (end of rant)

But I have made one and they are loads of fun, and I hope it goes well for you.

Also pressures above about 20 psi will destroy a nerf bullet. Just FYI.

Hmmm. I'd like to point out that 20PSI + pressures will NOT destroy a nerf bullet. Maybe because of different valve systems. I remember I had made an air gun to shoot darts at 60PSI. None of them shredded at all. They were in perfect condition.

littlebro05 wrote:
Hmmm. I'd like to point out that 20PSI + pressures will NOT destroy a nerf bullet. Maybe because of different valve systems. I remember I had made an air gun to shoot darts at 60PSI. None of them shredded at all. They were in perfect condition.

Is true. I have put 120 onto one using a valve which opens 1.4X faster then a modded sprinkler valve. It was fine.

chinnerz wrote:

littlebro05 wrote:
Hmmm. I'd like to point out that 20PSI + pressures will NOT destroy a nerf bullet. Maybe because of different valve systems. I remember I had made an air gun to shoot darts at 60PSI. None of them shredded at all. They were in perfect condition.

Is true. I have put 120 onto one using a valve which opens 1.4X faster then a modded sprinkler valve. It was fine.

weird, my longshot started to blow the backs of my streamlines apart and thats cant be anywhere near those pressures

My STOCK LS is blowing apart the backs of Streamlines. I think it's a design flaw.

Neodore wrote:weird, my longshot started to blow the backs of my streamlines apart and thats cant be anywhere near those pressures

Umm LS compression would be 20-25 psi max, i don't know whats up with that...
Can you PM me some pics so i (fully) know what you mean?

I made one of these but mine had a solenoid valve and a masive batery. It woks great but it realy heavy because of the 12v battery you need to power the solenoid. Mine shoots 268 ft

Do you mean it will work like a tennisball cannon?

cinlia01 wrote:I made one of these but mine had a solenoid valve and a masive batery. It woks great but it realy heavy because of the 12v battery you need to power the solenoid. Mine shoots 268 ft

If you take out the solenoid like in this it will actuate a lot faster meaning more power at the same pressures.

@ BPV: define "tennis ball cannon"

Have a pipe, Bigger pipe at the end with a screw top, Drilled through the screw top there is a bbq igniter and how you use it is you spray deo in the end, screw the top back on and push the button and it fires a tennisball really far

cheers for the info but check the date of post mate

Righto, so essentially you mean something like this:



There is nothing wrong with that design, and it will shoot a good distance. However let me conclude by posting this:


It would be the same length, however the barrel extends inside the blast chamber making it quite a bit longer making it more powerful; this also allows your to load from the back of the gun, making it safer. This design is also powered by capacitors with three spark gaps making it more reliable... or more first time shots. i have also included a small computer fan to circulate the propellant around the chamber also increasing the number of first time shots. another feature is the ability to add a pistol grip increasing comfort of shooing and thus accuracy.

Getting back on track, this is not a spud gun forums, its a Nerf forums, and one which tries to promote safety too. So lets not talk about stuff like this in the open.
If you are interested in all of this give me a PM and we can talk in private.