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 67 users online :: 4 registered, 0 hidden and 63 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

Multiple sparks?

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

Multiple sparks?

Unread postAuthor: Dr.Doom » Wed Oct 18, 2006 4:24 pm

I've just got done making my first spudgun, a simple fixed barel $20 to make the whole thing variety with a lantern sparker ignition.

I've seen on a few sites people using electrical ignitions to create multiple sparks, what would the purpose of multiple sparks be?
  • 0


Dr.Doom
Private
Private
 
Posts: 19
Joined: Wed Oct 18, 2006 2:03 pm
Location: Cincy, Ohio
Reputation: 0

Unread postAuthor: rna_duelers » Fri Oct 20, 2006 9:05 am

To ignite the mixture more rapidly and to change the flame front from moving from one ned to the other to sorta have the mixtrue ignite all at once,well thats what i figured from it.
  • 0

Image
User avatar
rna_duelers
Major General
Major General
 
Posts: 1740
Joined: Mon Sep 26, 2005 7:07 am
Location: G-land Australia
Country: Australia (au)
Reputation: 1

Unread postAuthor: Recruit » Fri Oct 20, 2006 9:47 am

More gas explodes at once causing better performance
  • 0

User avatar
Recruit
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 413
Joined: Fri Oct 06, 2006 4:26 pm
Reputation: 0

Unread postAuthor: joannaardway » Fri Oct 20, 2006 2:42 pm

More gas explodes at once causing better performance

Burns, not explodes. If it explodes, you're more or less a pin-cushion, unless you used heavy gauge steel.

Rough equation: More sparks (in the right places) = more power.

This is because in igniting the mixture in two seperate places results in getting twice the amount burnt in any one instant. The increased heat and exhaust gasses will result in more pressure, meaning more force on your spud, and more acceleration.

That explain it?
  • 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: Dr.Doom » Fri Oct 20, 2006 2:57 pm

sounds good........
  • 0


Dr.Doom
Private
Private
 
Posts: 19
Joined: Wed Oct 18, 2006 2:03 pm
Location: Cincy, Ohio
Reputation: 0

Return to Combustion Cannon Discussion

Who is online

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

Reputation System ©'