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 72 users online :: 3 registered, 0 hidden and 69 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

Help with First Potato Cannon

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

Help with First Potato Cannon

Unread postAuthor: MisterSteve124 » Fri Apr 07, 2006 12:02 pm

I'm going to be making my first potato cannon and I just have some questions. What should I use for the igniter? I was going to use a electric grill igniter but I saw some places that they break easily and dont work well. If I do use the grill igniter is it better to have the igniter on the cap of the combustion chamber or on the top of it? Will it make a difference when igniting the fuel?

Thanks
  • 0

User avatar
MisterSteve124
Colonel
Colonel
 
Posts: 702
Joined: Sat Feb 11, 2006 10:11 pm
Location: West Chester, PA
Reputation: 0

Unread postAuthor: )DEMON( » Fri Apr 07, 2006 12:13 pm

you should look around the web site a little harder
  • 0

User avatar
)DEMON(
Major General
Major General
 
Posts: 1391
Joined: Sun Mar 12, 2006 1:22 pm
Location: Johannesburg South Africa
Reputation: 0

Unread postAuthor: SteamRoller » Fri Apr 07, 2006 1:56 pm

The two best igniters for combustion are either a BBQ spark or a Lantern spark. BBQ sparkers are nice because you can set them up to jump multiple electrodes (create several sparks across some sort of metal object, i.e. nails). Lantern sparks are nice because they don't die, but you do have to replace the flint. My first combustion i made over a year ago still has the same BBQ spark in and it still works everyime. As for the placement, you probably want it in the center ot near the back but not in the endcap. Drill one screw in each side of your chamber so it looks something like this (-~-)

( ) Being the PVC, - Being the nails and ~ being the spark
  • 0

User avatar
SteamRoller
Private First Class
Private First Class
 
Posts: 28
Joined: Tue Mar 21, 2006 6:27 pm
Reputation: 0

Unread postAuthor: spudshot » Fri Apr 07, 2006 2:22 pm

dont use nails in your chamber, use screws, the nails can wobble and leak hot gas.
  • 0

Image

spudshot
Brigadier General
Brigadier General
 
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am
Reputation: 0

Unread postAuthor: Rambo » Fri Apr 07, 2006 3:08 pm

The best plase for the spark is the center.
  • 0

User avatar
Rambo
Colonel
Colonel
 
Posts: 509
Joined: Sun Jan 15, 2006 2:07 pm
Reputation: 0

Unread postAuthor: spudshot » Fri Apr 07, 2006 4:20 pm

most people say 3/4 way toward the back is the best, but i dont think there is really any evidence of where the best spot is exactly, i usually use a sparkstrip for multiple ignition points throughout the chamber
  • 0

Image

spudshot
Brigadier General
Brigadier General
 
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am
Reputation: 0

Unread postAuthor: Blackspire » Fri Apr 07, 2006 5:42 pm

I just took the wire that comes off the BBQ lighter, cut the end a bit and then bent it so it's by the bottom of the sparker itself. Might not make sense but I can't get a picture. To hell with nails or screws.
  • 0


Blackspire
Specialist
Specialist
 
Posts: 45
Joined: Thu Mar 30, 2006 11:31 pm
Location: Alberta Canada
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: spudshot » Fri Apr 07, 2006 5:45 pm

its not safe to put the ignitor right into the gun, theres barely any threads on them, and it might rocket out of the socket
  • 0

Image

spudshot
Brigadier General
Brigadier General
 
Posts: 1036
Joined: Sun Oct 03, 2004 7:16 am
Reputation: 0

Unread postAuthor: schmanman » Fri Apr 07, 2006 8:09 pm

go Pnumatic! more powerful,one with a ball valve is very easy to make
  • 0

User avatar
schmanman
Major General
Major General
 
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Country: United States (us)
Reputation: 0

Unread postAuthor: MisterSteve124 » Sat Apr 08, 2006 8:49 am

if you go pnumatic who wants to carry around an air compresser
  • 0

User avatar
MisterSteve124
Colonel
Colonel
 
Posts: 702
Joined: Sat Feb 11, 2006 10:11 pm
Location: West Chester, PA
Reputation: 0

Return to General Spud Cannon Related

Who is online

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

Reputation System ©'