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 57 users online :: 4 registered, 0 hidden and 53 guests


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

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Bolt Action

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.
Sponsored 
  • Author
    Message

Bolt Action

Unread postAuthor: Shadowscion » Sun Apr 22, 2007 8:47 pm

Hey. I was wondering if this would work for a bolt action-ish feed.

This is a paint drawing of the whatever you want to call it.
Basically its the barrel, with a larger size pipe sleeved over it loose enough to slide up and down the barrel. Somewhere under the sleeve is a hole in the barrel big enough for whatever you are firing. This whole is also on the sleeve so when they line up its an open hole into the barrel from the outside. From there its just the matter of attaching a hopper of any sort onto it.
Image

This is "it" on a gun. Its in front of the black valve on the model.
  • 0

Attachments
sniper1.PNG
sniper1.PNG (28.19 KiB) Viewed 523 times
Last edited by Shadowscion on Sun Apr 22, 2007 8:55 pm, edited 1 time in total.

Shadowscion
Specialist
Specialist
 
Posts: 50
Joined: Thu Oct 26, 2006 4:21 pm
Reputation: 0

Unread postAuthor: hi » Sun Apr 22, 2007 8:51 pm

hey, that is a cool idea. i just might make one for a gun im making soon.

i needed a good way to feed marbles and you just told me how, great thinking. it might need a little tinkering, but other than that it looks really good.
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Unread postAuthor: ShowNoMercy » Sun Apr 22, 2007 8:52 pm

Could you explain it in more detail? I am having trouble figuring it out, it is most likely me but nevertheless I can always ask.
  • 0

Jesus saves, no need to pray
The gates of pearl have turned to gold
It seems you've lost your way
User avatar
ShowNoMercy
Brigadier General
Brigadier General
 
Posts: 1094
Joined: Mon Mar 19, 2007 8:08 am
Location: Jersey Bitches!
Reputation: 0

Unread postAuthor: hi » Sun Apr 22, 2007 8:56 pm

in the first picture it is closed. the second it is open and feeding, then the third it is closed again after a round has droped in.

it is the same thing as having a hole in the barrel and having a coupler slide over it. only instead of having just a coupler, there is also a feeder like on a paintball gun. get it?
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Unread postAuthor: Shadowscion » Sun Apr 22, 2007 8:58 pm

^^ Hes right. The only thing I'm not sure about is if it will over feed. If you tilt the barrel forward while loading a round it might.
  • 0


Shadowscion
Specialist
Specialist
 
Posts: 50
Joined: Thu Oct 26, 2006 4:21 pm
Reputation: 0

Unread postAuthor: hi » Sun Apr 22, 2007 9:00 pm

it wont if the barrel is pointed up. you just have to have a nail or something just behind where it feeds so that is cant roll towards the valve, if that makes sence.
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Unread postAuthor: hi » Sun Apr 22, 2007 9:03 pm

another thing that would work is simply twisting it instead of sliding it back and forth.
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Shadowscion » Sun Apr 22, 2007 9:04 pm

Yeah thats a good point...although, 3/4 CPVC is pretty tight on paint balls, which is what this gun is designed for. Maybe they wont slide down the barrel at all.
  • 0


Shadowscion
Specialist
Specialist
 
Posts: 50
Joined: Thu Oct 26, 2006 4:21 pm
Reputation: 0

Unread postAuthor: hi » Sun Apr 22, 2007 9:10 pm

i dont know where you live, but here is the US paintballs are really loose in 3/4''. infact they are so loose that you need wadding to make them work well.

in US they are .68 caliber. You can buy paintballs for blowguns in a slightly smaller size.
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Unread postAuthor: Shadowscion » Sun Apr 22, 2007 9:12 pm

3/4" CPVC has a different ID than 3/4" sch40 or 80. It fits them almost perfect.

EDIT: I believe CPVC is PVC pipe with copper pipe size inner diameters

EDIT2: Does anyone know if putting a stopper to block airflow is a good idea. I need one for that Tee behind the valve so I can have that stock coming off of the main gun. If it isn't safe I can just grind out a tee and put it over the pipe between the two elbows instead
  • 0


Shadowscion
Specialist
Specialist
 
Posts: 50
Joined: Thu Oct 26, 2006 4:21 pm
Reputation: 0

Unread postAuthor: pyromaniac » Sun Apr 22, 2007 9:26 pm

if you dont want want your ammo to roll for marbles place a little foam peice inside your barrel. this will keep yoru ammo from rolling down the barrel.
  • 0

:pottytrain3:
User avatar
pyromaniac
Brigadier General
Brigadier General
 
Posts: 805
Joined: Tue Feb 27, 2007 7:18 pm
Location: MO
Reputation: 0

Unread postAuthor: hi » Sun Apr 22, 2007 9:29 pm

Shadowscion wrote: Does anyone know if putting a stopper to block airflow is a good idea. I need one for that Tee behind the valve so I can have that stock coming off of the main gun. If it isn't safe I can just grind out a tee and put it over the pipe between the two elbows instead


what, you mean an end cap/plug?......
  • 0

"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
User avatar
hi
Major General
Major General
 
Posts: 1619
Joined: Thu Feb 01, 2007 9:28 pm
Reputation: 0

Unread postAuthor: Shadowscion » Sun Apr 22, 2007 9:35 pm

No. A rubber stopper...like this.

Image
  • 0


Shadowscion
Specialist
Specialist
 
Posts: 50
Joined: Thu Oct 26, 2006 4:21 pm
Reputation: 0

Unread postAuthor: From_Hamsterdam » Sun Apr 22, 2007 10:02 pm

You could add a spring to the front of the hopper to push the ammo to the back. The spring would have to stop just before the hole so the last few shots would be gravity fed. (spring not locking them against the back plug)
  • 0


From_Hamsterdam
Staff Sergeant
Staff Sergeant
 
Posts: 110
Joined: Thu Feb 15, 2007 8:26 pm
Reputation: 0

Unread postAuthor: mega_swordman » Mon Apr 23, 2007 5:25 am

It looks good in theory. I really like your concept gun, I hope you build it. It looks nice.
  • 0

"Never tell people how to do things. Tell them what to do and they will surprise you with their ingenuity." George S. Patton
User avatar
mega_swordman
Colonel
Colonel
 
Posts: 527
Joined: Wed Nov 29, 2006 2:37 pm
Location: Bay Area, California
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'