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 58 users online :: 3 registered, 0 hidden and 55 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Noob to combustion

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

Noob to combustion

Unread postAuthor: Puppet » Thu Sep 28, 2006 10:51 pm

Hi everyone. I am currently in the process of building my first combustion spudgun. This will not be my first cannon however as I have built a .50 cal air cannon in the past. I have a few questions i want to get answered before i put it all together. Here are the parts I have:
5 feet of 2" pvc pipe
5 feet of 4 inch pvc pipe
4 inch to 2 inch reducer
4 inch cleanout cap and plug
lantern lighter

1. What is the best chamber to barrel ratio for a 2 inch barrel using spray deodorant (old spice or right guard) as a fuel?

2. My 2" pipe doesnt fit perfectly into my reducer (not toght but not loose either, kind of semi-snug) will this be okay when I pvc cement it together?

3. What length barrel do you suggest I use ? I was thinking 3 to 4 feet.

4. Where should I mount the lantern lighter?

Any help you could give me would be much appreciated. Thanks!
  • 0


Puppet
Private
Private
 
Posts: 1
Joined: Thu Sep 28, 2006 10:35 pm
Reputation: 0

Unread postAuthor: singularity » Thu Sep 28, 2006 11:33 pm

1 dont remeber probally doesnt need to be presise

2 - youll be fine as long as you know how to use pvc cement

3 - well mines got a 4 foot barrel (its just a combustion +/- a foot probablly wont make much of a difference

4 - well i made a front grip for my cannon and i mounted the ingnitor there

ps - i see yuor up a midnight too yay for insomnia (unless your in a different timezone)
  • 0

be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
User avatar
singularity
Brigadier General
Brigadier General
 
Posts: 982
Joined: Mon Jun 26, 2006 10:53 pm
Location: someplace
Reputation: 0

Unread postAuthor: brumby » Sun Oct 08, 2006 12:35 am

1. the best chamber to barrel ratio is 1.5:1 ... so you could do a 5 foot barrel and a 23.75 inch chamber

2. ditto on the guy above me

3. thats up to you.. 3 - 4 feet is fine go to http://www.burntlatke.com/ratcalc.html to figure out your C/B ratio

4. sorry im no good with lantern lighters but its best to drill through 2 layers of plastic, so i would put it towards the back at the cleanout plug.

With a combustion the first and best upgrade you want will be a chamber fan go to http://www.burntlatke.com/fan.html to find out more
  • 0


brumby
Specialist
Specialist
 
Posts: 55
Joined: Thu Mar 02, 2006 1:55 am
Reputation: 0

Unread postAuthor: frankrede » Sun Oct 08, 2006 1:13 am

Her is how I made mine.
It gives it a nice clean look.
[albumimg]231[/albumimg]
  • 0

Current project: Afghanistan deployment
User avatar
frankrede
Lieutenant General
Lieutenant General
 
Posts: 3220
Joined: Thu Jul 20, 2006 9:47 pm
Reputation: 0

Unread postAuthor: Hakaro » Fri Oct 13, 2006 4:15 pm

hey did you guys here about right guard it sucks that it happened I loved using it for my propelant I just ran out like twenty minutes ago!
  • 0


Hakaro
Private
Private
 
Posts: 3
Joined: Thu Oct 12, 2006 4:45 pm
Reputation: 0

Unread postAuthor: MrCrowley » Fri Oct 13, 2006 4:57 pm

yeah its been on the homepage for months now
  • 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

Return to Combustion Cannon Discussion

Who is online

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

Reputation System ©'