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 60 users online :: 3 registered, 0 hidden and 57 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

2 inch piston cannon comment please

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
Sponsored 
  • Author
    Message

Unread postAuthor: spudtyrrant » Mon Apr 06, 2009 9:53 pm

i will enter everything into the ggdt again and check but its getting late so i will do it tomorrow i also didn't change the flow coefficient would that make a significant difference? if so what should i enter for it
  • 0

User avatar
spudtyrrant
Colonel
Colonel
 
Posts: 550
Joined: Fri Jan 02, 2009 6:10 pm
Reputation: 0

Unread postAuthor: mark.f » Mon Apr 06, 2009 9:54 pm

Looks good! I would personally like to see the internals' pictures rather than damage pictures, but that's just me.

Oh, and....

<img src="http://www.seehere.com/showPicture.do?type=pa&size=640x480&id=1359640" alt="">

JSR is going to emasculate you. :)
  • 0

User avatar
mark.f
Donating Member
Donating Member
 
Posts: 3464
Joined: Sat May 06, 2006 11:18 am
Country: United States (us)
Reputation: 21

Unread postAuthor: jackssmirkingrevenge » Mon Apr 06, 2009 9:57 pm

mark.f wrote:JSR is going to emasculate you :)


At least he's wearing shoes ;) maybe I'll stop at circumcision hehe
  • 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: spudtyrrant » Mon Apr 06, 2009 10:28 pm

jackssmirkingrevenge wrote:
mark.f wrote:JSR is going to emasculate you :)


At least he's wearing shoes ;) maybe I'll stop at circumcision hehe

srry but isn't it a tradition i has to's includes the feets :P
  • 0

User avatar
spudtyrrant
Colonel
Colonel
 
Posts: 550
Joined: Fri Jan 02, 2009 6:10 pm
Reputation: 0

Unread postAuthor: MrCrowley » Mon Apr 06, 2009 11:18 pm

Turned out pretty nice! I too would like to see the piston, just to see how you made yours. Great to hear it's working out for, good to see my guide has helped people further their spudding addiction :)

Get some videos up :P
  • 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: Technician1002 » Tue Apr 07, 2009 12:01 am

[quote="daberno123"]@Technician1002
Here is the wiki link for the page on GGDT. You can download it off D_Hall's site. There's a link in the article to his site.

[quote]

Thanks. Once I had a name instead of just the ggdt letters I was able to find it on a Goggle search. Thanks. I'll play with it and see what it takes to get marshmallows in a 1 inch supersonic as well as apples in a 2.5 inch.
Hitting almost 900 FPS with an apple has inspired me to try to reach supersonic.
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: Fnord » Tue Apr 07, 2009 11:45 am

I miss the days where posting a simple jpeg image didn't require a page full of bloated javascript and flash. The images don't even show up here.

Anyway, it sounds like a nice gun... Any chance you can add precise specs to the original post; chamber volume, barrel length etc..?

A 7oz apple at 882 fps is like 5,000 ftlbs, so I'd think more of the 600 figure.
(Edit, oh that was technician, nevermind)
Judging from the video it still has some impressive power though.
  • 0

Image
User avatar
Fnord
Major General
Major General
 
Posts: 2244
Joined: Tue Feb 13, 2007 9:20 pm
Location: Pripyat
Reputation: 7

Sponsored

Sponsor
 


Previous

Return to Pneumatic Cannon Database

Who is online

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

Reputation System ©'