we've been using starting fluid and after every shot we brush off the electrodes with a small wire brush. the pvc for the chamber is just a different color but still pressure rated .

so this is our first cannon completed 1.5:1 C:B ratio http://i295.photobucket.com/albums/mm139/AJChambers91/100_0738.jpg here is the chamber itself http://i295.photobucket.com/albums/mm139/AJChambers91/100_0739.jpg here are the screws we have meeting in the chamber to create the spark (hooked up to ...

alright thatnks for the help everyone!

ok then ill tone down the size of the chamber and ill just be sure to use pressure rated pipe. propane guns do look amazing and i am definately gonna build one someday soon, but not as my first.

So looking at the pictures i'm just curious what did you use to seal the chamber after fueling, i dont see any threaded adapters of any sort. were you just slapping an endcap on there and calling it good or what?? Kind of. i would put the cap on and i knew that it would stay on even if it did go so...

that's a bad link

ok in this picture the nice blues spark is visible http://i295.photobucket.com/albums/mm139/AJChambers91/100B0530.jpg this is the entire cannon http://i295.photobucket.com/albums/mm139/AJChambers91/100_0333.jpg this is the ignitor wiring with screws http://i295.photobucket.com/albums/mm139/AJChamber...

k ill post a pic for u guys after school...the diameter was about 1 1/2". we tried a lot of fuels and different amounts.

ill admit that i didnt put quality time and effort into this first one but i still dont understand why it wouldnt shoot. it is about 4 feet long and is just one single piece of pvc pipe. had bbq sparker attatched to screws near the bottome that made small gap inside of pipe. ANYWAY, this time around...