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 45 users online :: 5 registered, 0 hidden and 40 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

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

The Team
Administrators
Global Moderators
global_moderators.png CS

BB Spread Safe Speed

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

BB Spread Safe Speed

Unread postAuthor: Atlantis » Mon Oct 23, 2006 2:01 pm

My friend wants a rocket launcher type pneumatic that will fire about 200 BB's, we plan on using a 1.5" Barrel and 3" Chamber, coaxial with a barrel about 2-3 feet long. We need to know what PSI is safe to shoot at people over 100 feet away.
  • 0

"There isn't a problem in the world that can't be solved by the proper application of explosives"
User avatar
Atlantis
Brigadier General
Brigadier General
 
Posts: 955
Joined: Sat Sep 03, 2005 10:26 pm
Location: Florida
Reputation: 0

Unread postAuthor: POS » Mon Oct 23, 2006 2:08 pm

You can go rather high, since the BB isn't heavy. Normal BB)guns shoot at a muzzlespeed of 300 to 600 fps. My guess, at least 100 psi. IF THE ENEMY is at 100 feet. If closer, I should say 80 psi. However, much depends on the volume of the barrel and the chamber (C:B ratio), the dead volume, the wadding used, etc.
  • 0

User avatar
POS
Major
Major
 
Posts: 395
Joined: Thu Sep 14, 2006 4:19 pm
Reputation: 0

Unread postAuthor: joannaardway » Mon Oct 23, 2006 4:34 pm

300 to 600 fps sounds damned high.

The ones I normaly see don't beat 100 fps, and they sting like hell.
  • 0

User avatar
joannaardway
Brigadier General
Brigadier General
 
Posts: 949
Joined: Mon Oct 09, 2006 4:57 pm
Location: SW Hertfordshire, England, UK.
Reputation: 0

Unread postAuthor: Atlantis » Mon Oct 23, 2006 7:22 pm

So somwhere between 50 and 100 PSI. Thanks, I did'nt think I'd need to keep it low.
  • 0

"There isn't a problem in the world that can't be solved by the proper application of explosives"
User avatar
Atlantis
Brigadier General
Brigadier General
 
Posts: 955
Joined: Sat Sep 03, 2005 10:26 pm
Location: Florida
Reputation: 0

Unread postAuthor: Velocity » Mon Oct 23, 2006 7:38 pm

I hate these topics that come up... even under the best conditions, shooting someone with a spudgun is very dangerous.

Are you planning direct fire or something like mortar fire? If you are talking about the latter, then it is a bit safer...
  • 0

User avatar
Velocity
Brigadier General
Brigadier General
 
Posts: 1039
Joined: Tue Feb 07, 2006 5:42 pm
Reputation: 0

Unread postAuthor: Hotwired » Mon Oct 23, 2006 7:39 pm

Airsoft BB's are fired at 300-400fps for full auto and up to 600fps for snipers.

The 600fps snipers are not meant to fire on players at close range.
Close range guns are usually less than 300fps e.g. shotguns.

The BB's used are 6-8mm plastic.
  • 0

User avatar
Hotwired
Lieutenant General
Lieutenant General
 
Posts: 2599
Joined: Fri Oct 13, 2006 5:51 am
Location: UK
Reputation: 0

Unread postAuthor: Atlantis » Mon Oct 23, 2006 8:53 pm

My friend said he was going to use 0.12 gram BB's and he said the other base would be 200 feet away. He said it did'nt matter which angle it would be fired at. It can either be mortar fired or a giant shotgun.
  • 0

"There isn't a problem in the world that can't be solved by the proper application of explosives"
User avatar
Atlantis
Brigadier General
Brigadier General
 
Posts: 955
Joined: Sat Sep 03, 2005 10:26 pm
Location: Florida
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: MrCrowley » Mon Oct 23, 2006 10:01 pm

why dont you use 0.12g paintballs instead? theyre still 6mm and the same price.
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Unread postAuthor: shadowghost21 » Mon Oct 23, 2006 11:04 pm

I built a cannon for airsoft called the liberator, any way, It has a 1.5" chamber 14in long and a barrel 1.5" diameter 21" long and I pump it to 60 psi and load in tissue paper wadding some bbs andmore wadding, the range is awful. Pump higher,The spread however is amazing. Also I made a little "shell of sorts using pvc so I can quick load.Take barrel off put new shell in fire, remove barrel,remove shell, load new shell, and repet.

-shadow
  • 0


shadowghost21
Specialist
Specialist
 
Posts: 47
Joined: Tue Sep 19, 2006 7:48 pm
Reputation: 0

Unread postAuthor: POS » Tue Oct 24, 2006 2:38 am

joannaardway wrote:300 to 600 fps sounds damned high.

The ones I normaly see don't beat 100 fps, and they sting like hell.


This site is about AEG's (automatic electric guns) They're BB-guns, but replica's at a scale of 1/1, full metal.

http://www.airsoftadventure.nl/lidmaatschap/lidmaatschap.asp

Watch this whats a quote from that site :

De vereisten voor dit lidmaatschap zijn:

- Minimale leeftijd 18 jaar
- Geldig identiteits bewijs*
- Eigen afsluitbare wapen koffer met vermelding van voor en
achternaam (bescheiden maten)
- Eigen A.E.G., maximaal 400 fps. upgrade of single shot
sniper rifle, maximaal 500 fps upgrade

- Eigen camouflagekledij en oogbescherming


That are max speeds they set, to alow you in their game. You can upgrade a BB-gun even to a much higher speed.

I usualy am in a game with 300 to 400 fps. BB's go realy fast and straight. You can hit a target at 50 yards with ease.

So 300 to 600 isnt to fast. You should wear goggles though
  • 0

User avatar
POS
Major
Major
 
Posts: 395
Joined: Thu Sep 14, 2006 4:19 pm
Reputation: 0

Unread postAuthor: POS » Tue Oct 24, 2006 2:42 am

Shadowghost21, could you post som pics of that, or send some to me please ? I'm interested in that.
  • 0

User avatar
POS
Major
Major
 
Posts: 395
Joined: Thu Sep 14, 2006 4:19 pm
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'