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 46 users online :: 5 registered, 0 hidden and 41 guests


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

Registered users: Bing [Bot], Exabot [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

Gatling #1

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
Sponsored 
  • Author
    Message

Unread postAuthor: SP00K » Fri Apr 30, 2010 12:00 pm

Do you have specs for a loading mechanism? I don't want to doubt you because it looks fantastic, but how are you possibly going to manage 300 balls per minute?
  • 0

We are all worms, but I do believe I am a glow worm.

~Winston Churchill~
User avatar
SP00K
2nd Lieutenant
2nd Lieutenant
 
Posts: 212
Joined: Wed Dec 03, 2008 4:20 pm
Location: Ohiya
Reputation: 0

Unread postAuthor: ijahman » Fri Apr 30, 2010 12:32 pm

@big-e: it's right for the cycle.

@spook : well, i make a prevision, that a round can be make in one second, 5 shot in one sec. = 300 min...

but it's just to calculate the rotation of the motor... ouch hard english
  • 0


ijahman
Corporal
Corporal
 
Posts: 63
Joined: Mon Nov 30, 2009 4:15 pm
Reputation: 0

Unread postAuthor: ijahman » Sat May 01, 2010 6:12 am

  • 0

Last edited by jrrdw on Fri Apr 04, 2014 4:56 pm, edited 2 times in total.
Reason: Thread cleaning.

ijahman
Corporal
Corporal
 
Posts: 63
Joined: Mon Nov 30, 2009 4:15 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sat May 01, 2010 6:29 am

[youtube]http://www.youtube.com/watch?v=IUDqybDUtnE[/youtube]

Sweeeeeeet! Bit wobbly but assuming it always fires at the same juncture it should be fairly consistent :) what are you doing for ignition?
  • 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: ijahman » Sat May 01, 2010 6:40 am

my ignition system will be make with a stun gun, i'm french and speack english is casse couille !
  • 0


ijahman
Corporal
Corporal
 
Posts: 63
Joined: Mon Nov 30, 2009 4:15 pm
Reputation: 0

Unread postAuthor: ijahman » Sun May 02, 2010 10:14 am

[youtube]http://www.youtube.com/watch?v=GgjDjwa27Ug[/youtube]

Video unavailable.
  • 0

Last edited by jrrdw on Fri Apr 04, 2014 4:56 pm, edited 1 time in total.
Reason: Thread cleaning.

ijahman
Corporal
Corporal
 
Posts: 63
Joined: Mon Nov 30, 2009 4:15 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun May 02, 2010 11:09 am

looking good, I hope though that at high speed it won't be chopping up paintballs in the feed system...
  • 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: Mr.Sandman » Sun May 02, 2010 11:50 am

Very very nice design. can't wait to see the finished product. Makes it seem like the french make the nicest cannons so far really makes me look forward every time i go to patatar.net.
  • 0

Yeah, it's that important.
User avatar
Mr.Sandman
Donating Member
Donating Member
 
Posts: 762
Joined: Fri Mar 28, 2008 9:10 am
Country: Antarctica (aq)
Reputation: 0

Unread postAuthor: ijahman » Sun May 02, 2010 3:19 pm

i will use "reball", it's paintball ammo with no paint inside.
Rubber ball for standart paintball gun, also called "reball".

here it's the back from my gatling, you can see the fan, the motor (from an ancient 12v drill)

<a href="http://www.servimg.com/image_preview.php?i=184&u=11915007" target="_blank"><img src="http://i61.servimg.com/u/f61/11/91/50/07/img_0611.jpg" border="0" alt="Image hébergée par servimg.com"></a>
  • 0


ijahman
Corporal
Corporal
 
Posts: 63
Joined: Mon Nov 30, 2009 4:15 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun May 02, 2010 3:25 pm

Is the fan there to intoduce air into the system? How are you measuring the amount of fuel injected?
  • 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: ijahman » Sun May 02, 2010 3:38 pm

too hard to explain, i will use the same system from my RR6
http://patator.frbb.net/conseils-aides-a-la-construction-du-patator-a-laque-f1/patator-barillet-6-coups-page-1-a-jour-t5133.htm

Finally you turn on the fan, then you open the butane gas ! important ! all the time the butane is open!

and with a Faucet on butane, you régulate the flow of butane to make a perfect mix. this will work perfectly.

test with a lighter on top of canon, then when it explode the mix is ok
  • 0


ijahman
Corporal
Corporal
 
Posts: 63
Joined: Mon Nov 30, 2009 4:15 pm
Reputation: 0

Unread postAuthor: iknowmy3tables » Sun May 02, 2010 4:31 pm

I love it, the design is brilliant,

he's got a continuous fuel air mix filling the chambers when they load.

just be careful with that explosive fuel air mixture or you'll find yourself with very crispy eyebrows
  • 0


iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun May 02, 2010 11:51 pm

iknowmy3tables wrote:I love it, the design is brilliant


ditto, very ambitious but it just might work :)
  • 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: iknowmy3tables » Mon May 03, 2010 1:04 pm

jackssmirkingrevenge wrote:
iknowmy3tables wrote:I love it, the design is brilliant


ditto, very ambitious but it just might work :)

are you still not clear on how the fuel injection/venting works? look at the diagram below imagine the blue part rotating around the gray part and a continuous flow of air mixed with fuel blowing in from the gray tube into the blue chambers

as far as I've seen this is the only automatic combustion design that doesn't use timing circuits, and I'm a fan of passive engineering designs
  • 0

Attachments
fuel air injection on gatling.PNG
this is just my interpretation of the design
fuel air injection on gatling.PNG (28.1 KiB) Viewed 3626 times

iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Unread postAuthor: spudamine » Mon May 03, 2010 1:50 pm

are you still not clear on how the fuel injection/venting works? look at the diagram below imagine the blue part rotating around the gray part and a continuous flow of air mixed with fuel blowing in from the gray tube into the blue chambers


I think jack probably grasps the concept :lol: I'd agree the idea is very clever and the implementation so far is looking good. However the complexity of this is probably sufficient to throw up quite a few problems. What is worrying me is getting enough fuel/air into the chamber for a decent shot in the short time the chamber is open to the central manifold. Bear in mind the mixture is only being pushed by a fan with several corners to negotiate. Hopefully it's a powerful little fan :)
  • 0

User avatar
spudamine
Sergeant Major
Sergeant Major
 
Posts: 184
Joined: Sun Nov 23, 2008 2:47 pm
Reputation: 0

PreviousNext

Return to Combustion Cannon Discussion

Who is online

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

Reputation System ©'