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 80 users online :: 5 registered, 0 hidden and 75 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Fittingproblem!!

A place to ask general spud cannon related questions.
Sponsored 
  • Author
    Message

Unread postAuthor: jackssmirkingrevenge » Mon Sep 28, 2009 5:39 am

igiigi wrote:ok, if build a Hybrid Cannon with small chamber, i put some gas in and I need put air in right? without air it doesn´t works (becoase the chamber is to small)?

hmm can I put air with a bicycle pump in? and gas with tank injection?
if jes, how should the ratio of air/gas be?


Have a good read and understand the concept first ;)
  • 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: igiigi » Mon Sep 28, 2009 6:21 am

i did, and? :)

but a mix of air and fuel? oO
  • 0


igiigi
Private
Private
 
Posts: 16
Joined: Sat Sep 26, 2009 12:34 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Mon Sep 28, 2009 6:32 am

Ordinary combustion cannons use a mixture of air and fuel at atmospheric pressure. For a typical fuel like butane or propane the ratio is about 4% fuel, for example 4mL of Propane in a 100mL chamber.

In a hybrid, the mixture is under pressure, and for every bar of pressure you add, you have to add one volume of fuel.

For example in a 100mL chamber pressurised to 3 bar (45 psi), you have to add 16mL of fuel.
  • 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: igiigi » Mon Sep 28, 2009 6:36 am

ok, but my quastion was, can i put the air with bicycle pump?
i don´t have a air ccompressor?
  • 0


igiigi
Private
Private
 
Posts: 16
Joined: Sat Sep 26, 2009 12:34 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Mon Sep 28, 2009 6:38 am

It doesn't matter as long as you have pressure ;)
  • 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: igiigi » Mon Sep 28, 2009 6:40 am

ok, what peace i have to use to stop the mix going out of the chamber as long i put air and gas in?
  • 0


igiigi
Private
Private
 
Posts: 16
Joined: Sat Sep 26, 2009 12:34 pm
Reputation: 0

Unread postAuthor: MrCrowley » Mon Sep 28, 2009 6:45 am

If it's easier for you, try Private Messaging the member who made this hybrid:
http://www.spudfiles.com/forums/first-h ... 18493.html

He's from Germany also.
  • 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

Sponsored

Sponsor
 


Previous

Return to General Spud Cannon Related

Who is online

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

Reputation System ©'