Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 70 users online :: 5 registered, 0 hidden and 65 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], Majestic-12 [Bot], Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Help with a new idea.

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
Sponsored 
  • Author
    Message

Help with a new idea.

Unread postAuthor: DerpWithAGun » Thu May 03, 2012 1:53 am

Hey guys,

Recently I built an air rifle that shoots darts. It is full metal bullpup design and the pressure chamber is a 1 meter long galvanized steel pipe. My valve is a QEV ebay valve, 1/2" size. 90 psi. The gun is very strong and One of my favorite that I built.

Just yesterday, I was experimenting with the gun using different ways to fire it. Right now It fires with a 1/2" ball valve. I tried to fire the gun by using the schrader valve and to my amazement, it worked! But! For some weird reason, the valve actually closed again which gave me another shot. I got 2 shots out of the gun shooting some pretty heavy darts and they were penetrating 1 cm fence wood. The gun operated like this at 90 psi.

Then it came to me. What if I was able to make a new gun, the same way, except the valve will use less air, shoot .22 or .177 pellets and have a lot more shots? Maybe a hammer and spring to hit the schrader valve? So I had an idea, what if I was to use this: http://www.ebay.com/itm/Pneumatic-Quick ... 3ca1f7b400 (I hope it is 10mm threads) use a 1/2" 75cm long galvanized steel pipe for the chamber and then a schrader valve to pilot the gun? I would use 100 psi + on it. Will this idea work?

I was also thinking, what is a regulator? I'm sure someone here would be able to give a better explanation than google search. Right now, I'm thinking a pressure regulator is a device which only allows a certain amount of air passed it at one time? If I was to regulate 100 psi then the device would only let 100 psi passed it? Am I correct?
If so, should I use one for this project?

Thanks! :D

PS: My dad lost his job, can't get lathe and mill for a while now. Actually thinking of getting a CNC instead of lathe.
  • 0


DerpWithAGun
Sergeant First Class
Sergeant First Class
 
Posts: 144
Joined: Sat Jul 30, 2011 10:11 am
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Thu May 03, 2012 2:35 am

DerpWithAGun wrote:I tried to fire the gun by using the schrader valve and to my amazement, it worked! But! For some weird reason, the valve actually closed again which gave me another shot. I got 2 shots out of the gun shooting some pretty heavy darts and they were penetrating 1 cm fence wood. The gun operated like this at 90 psi.

Then it came to me. What if I was able to make a new gun, the same way, except the valve will use less air, shoot .22 or .177 pellets and have a lot more shots? Maybe a hammer and spring to hit the schrader valve? So I had an idea, what if I was to use this: http://www.ebay.com/itm/Pneumatic-Quick ... 3ca1f7b400 (I hope it is 10mm threads) use a 1/2" 75cm long galvanized steel pipe for the chamber and then a schrader valve to pilot the gun? I would use 100 psi + on it. Will this idea work?


Nothing remarkable about that.

http://www.spudfiles.com/forums/new-jsr ... 20075.html

if you're filling from the chamber side, you need to modify the QEV piston/diaphragm.

I was also thinking, what is a regulator? I'm sure someone here would be able to give a better explanation than google search. Right now, I'm thinking a pressure regulator is a device which only allows a certain amount of air passed it at one time? If I was to regulate 100 psi then the device would only let 100 psi passed it? Am I correct?
If so, should I use one for this project?


Image

PS: My dad lost his job, can't get lathe and mill for a while now. Actually thinking of getting a CNC instead of lathe.


Booooo... but wait, you can't afford a manual lathe or mill, but can afford a computer controlled lathe or mill?

:?
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Crna Legija » Thu May 03, 2012 3:13 am

lol one of teh noobest posts ever.

nothing new really its the same way wyzz's made his first few semi's.

A regulator just let a set amount of pressure pass. you could have a paint ball tank that has 800psi in the tank a regulator can make it so only 150psi is let out.
  • 0

'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
Crna Legija
Major General
Major General
 
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia
Reputation: 0

Unread postAuthor: DerpWithAGun » Thu May 03, 2012 4:32 am

jackssmirkingrevenge wrote:
DerpWithAGun wrote:I tried to fire the gun by using the schrader valve and to my amazement, it worked! But! For some weird reason, the valve actually closed again which gave me another shot. I got 2 shots out of the gun shooting some pretty heavy darts and they were penetrating 1 cm fence wood. The gun operated like this at 90 psi.

Then it came to me. What if I was able to make a new gun, the same way, except the valve will use less air, shoot .22 or .177 pellets and have a lot more shots? Maybe a hammer and spring to hit the schrader valve? So I had an idea, what if I was to use this: http://www.ebay.com/itm/Pneumatic-Quick ... 3ca1f7b400 (I hope it is 10mm threads) use a 1/2" 75cm long galvanized steel pipe for the chamber and then a schrader valve to pilot the gun? I would use 100 psi + on it. Will this idea work?


Nothing remarkable about that.

http://www.spudfiles.com/forums/new-jsr ... 20075.html

if you're filling from the chamber side, you need to modify the QEV piston/diaphragm.

I was also thinking, what is a regulator? I'm sure someone here would be able to give a better explanation than google search. Right now, I'm thinking a pressure regulator is a device which only allows a certain amount of air passed it at one time? If I was to regulate 100 psi then the device would only let 100 psi passed it? Am I correct?
If so, should I use one for this project?


Image

PS: My dad lost his job, can't get lathe and mill for a while now. Actually thinking of getting a CNC instead of lathe.


Booooo... but wait, you can't afford a manual lathe or mill, but can afford a computer controlled lathe or mill?:?


Can't afford either. I was thinking of instead of the lathe, save up for the CNC instead. I'm not really into making functional weapons anymore. I want to make other things such as weapons from games such as Halo. Props only. Also, I am filling from the pilot side.

Crna Legija, you don't have to be so rude about it. I knew it was possible to have a multi shot and I also knew Wyzz did it before. I thought the schrader would have just dumped the whole air source, not allowed for another shot. Seriously, you really don't know how to welcome a member who has been gone for a while.

Anyway, I'm going to start drawing a design. I hope the 1/4" QEV will be the right seize to fire pellets. Also, is a schrader a good enough pilot? Or should I make my own pilot with a nice air flow? I don't want something that has too much flow or that will use up to much pressure.
  • 0


DerpWithAGun
Sergeant First Class
Sergeant First Class
 
Posts: 144
Joined: Sat Jul 30, 2011 10:11 am
Reputation: 0

Unread postAuthor: Crna Legija » Thu May 03, 2012 5:09 am

lol you call that rude? I think someone need a table tea of concrete.
but seriously I wasn't trying to be rude...
  • 0

'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
Crna Legija
Major General
Major General
 
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia
Reputation: 0

Unread postAuthor: DerpWithAGun » Thu May 03, 2012 5:13 am

Crna Legija wrote:lol you call that rude? I think someone need a table tea of concrete.
but seriously I wasn't trying to be rude...


Whatever. I'm just gonna leave the forum now anyway. I'm just not in the mood anymore. Talking to you guys just makes me depressed. I'll just do my own crap from now on like I have been for the past month. Bye guys.
  • 0


DerpWithAGun
Sergeant First Class
Sergeant First Class
 
Posts: 144
Joined: Sat Jul 30, 2011 10:11 am
Reputation: 0

Unread postAuthor: Crna Legija » Thu May 03, 2012 5:36 am

cya,must be that time of the month
  • 0

'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
Crna Legija
Major General
Major General
 
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Zeus » Thu May 03, 2012 5:38 am

Crna Legija wrote:cya,must be that time of the month


My thoughts exactly Crna.
  • 0

/sarcasm, /hyperbole
User avatar
Zeus
Major General
Major General
 
Posts: 1422
Joined: Tue Oct 27, 2009 7:34 pm
Location: 'Straya, C*nt
Reputation: 2

Unread postAuthor: jackssmirkingrevenge » Thu May 03, 2012 5:45 am

Image
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Gippeto » Thu May 03, 2012 8:29 am

DerpWithAGun wrote: Bye guys.


Image
  • 0

"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
Gippeto
Donating Member
Donating Member
 
Posts: 2393
Joined: Sat Jan 19, 2008 10:14 am
Location: The Great White North...Canada eh!
Reputation: 11

Unread postAuthor: jackssmirkingrevenge » Thu May 03, 2012 10:13 am

Aren't we an accepting bunch :)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: pneumaticcannons » Thu May 03, 2012 10:23 am

Aren't we an accepting bunch
agreed
  • 0

ramicaza <- My Youtube Channel
User avatar
pneumaticcannons
Major
Major
 
Posts: 392
Joined: Sat Oct 30, 2010 9:45 am
Location: shite country in asia
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Thu May 03, 2012 10:30 am

pneumaticcannons wrote:agreed


In all fairness, his posts so far have been an endless stream of wide ranging questions that could have easily been answered by the most basic google or forum search.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: wyz2285 » Thu May 03, 2012 11:54 am

Apart from that, I have one factory made QEV that need to be filled from pilot side, the piston doesn´t let the air to pass from chamber to pilot. If Derp has used a factory made QEV, how can that happened? His chamber is big and tire valve has a low flow, but the piston should not have re-closed :?
  • 0

CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
User avatar
wyz2285
Major General
Major General
 
Posts: 2244
Joined: Sat Mar 06, 2010 7:50 am
Location: Porto, Portugal
Country: Portugal (pt)
Reputation: 12

Unread postAuthor: jackssmirkingrevenge » Thu May 03, 2012 12:03 pm

If you only let out a small amount of pilot volume, it can still re-close.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Next

Return to BB/Airsoft/Pellet Gun Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], Majestic-12 [Bot], Yahoo [Bot]

Reputation System ©'