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 :: 4 registered, 0 hidden and 66 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

Electric vortex?

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

Electric vortex?

Unread postAuthor: Carlman » Mon Apr 21, 2008 7:40 am

  • 0

Image
Aussie spudders unite!!
User avatar
Carlman
Major General
Major General
 
Posts: 1618
Joined: Sat Nov 24, 2007 1:18 am
Location: Western Australia
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Mon Apr 21, 2008 7:53 am

Essentially an earlier concept of this.
  • 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: benstern » Mon Apr 21, 2008 10:42 am

Ah my favorite type of bbmg, the Centrifugal BBMG.

http://www.spudfiles.com/forums/centrif ... t2724.html
http://www.spudfiles.com/forums/electri ... t3005.html

These have the potential for tremendous output of bbs.
  • 0

User avatar
benstern
Donating Member
Donating Member
 
Posts: 909
Joined: Wed Sep 21, 2005 8:24 pm
Reputation: 0

Unread postAuthor: jon_89 » Tue Apr 22, 2008 1:34 am

what was the eqaution to figure out fps?
  • 0


jon_89
Colonel
Colonel
 
Posts: 607
Joined: Wed Apr 11, 2007 9:50 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Tue Apr 22, 2008 1:53 am

If a 5 inch disk is spinning at 10,000 revs per minute, then a BB at the circumference travels a distance of (2 x pi x radius) - 15.71 inches in this case - in a time of (60 / rpm) - 0.006 seconds in this case.

Therefore if in 0.006 seconds it travels 15.71 inches, in one second it travels ([1 / time for one revolution] x distance for one revolution), in this case 2618 inches or 218 feet, therefore the velocity is 218 feet per second.
  • 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: JDP12 » Tue Apr 22, 2008 7:26 am

hmm.. might have to give this a try, perhaps increased rates of fire hmm??? also you wouldn't run out of air, which would be a boon... now how to make it portable.
  • 0

"Some say his pet elephant is pink, and that he has no understanding of "PG rated forum". All we know is, he's called JSR. "
User avatar
JDP12
Major General
Major General
 
Posts: 1943
Joined: Fri Mar 30, 2007 8:34 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Tue Apr 22, 2008 8:18 am

ilovetoblowthingsup wrote:hmm.. might have to give this a try, perhaps increased rates of fire hmm??? also you wouldn't run out of air, which would be a boon... now how to make it portable.


Again, have a browse through this project - the guy managed to achieve BBMG style performance in a portable package.
  • 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

Sponsored

Sponsor
 


Unread postAuthor: jon_89 » Tue Apr 22, 2008 10:56 pm

For this would I want a short or long barrel? Will a long barrel cause friction thus losing power? Will a short barrel decrease accuracy? What kind of motor would I want to use?
  • 0


jon_89
Colonel
Colonel
 
Posts: 607
Joined: Wed Apr 11, 2007 9:50 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Wed Apr 23, 2008 12:10 am

The barrel shouldn't be more than a couple of calibres in length, it's just extra friction. As to accuracy, what's important is that the barrel is as tight as possible and the muzzle is cut at 90 degrees.

What kind of motor would I want to use?


The biggest you can find ;) you want as many revs as possible, because it's directly linked to the maximum velocity you can obtain.
  • 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: jon_89 » Wed Apr 23, 2008 1:02 am

Is that 5000 fps even possible? It is stated in the first posts link.
  • 0


jon_89
Colonel
Colonel
 
Posts: 607
Joined: Wed Apr 11, 2007 9:50 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Wed Apr 23, 2008 1:34 am

jon_89 wrote:Is that 5000 fps even possible? It is stated in the first posts link.


Theoretically, if you can find a motor that will spin a 2 foot diameter disk at 48,000 rpm. And of course, a disk that will spin at that velocity without flying to pieces.

This concept had been proposed as a weapon of war and some funding was apparently granted by the US military, however nothing concrete seems to have come out of it.

[youtube]http://youtube.com/watch?v=3h23Pq7sZBo&feature=related[/youtube]
  • 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

Return to BB/Airsoft/Pellet Gun Discussion

Who is online

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

Reputation System ©'