first combustion cannon (painfully simple)

[neighboragrivator1]

This started out as an air cannon, but after the cap shot off and almost hit my friend and i in the head, I decided I had to rethink the whole cannon thing. The only problem originally was that we were too eager to shoot it and didnt wait past even an hour for it to dry , but the damn thing took way too long to pump up anyway. Ive already shot it a couple of times, but im wondering if this looks like a safe design. any CONSTRUCTIVE comments would be appreciated:D
it has a bbq starter attached to two screws for ignition, a 1.5 inch barrel, and a 4 inch combustion chamber.
have yet to shoot anything out of it other than wet paper towels.

[anthony5640]

a picture?

[neighboragrivator1]

http://www.spudfiles.com/thumb_upload/p ... onpic3.jpg

[anthony5640]

cant tell much from that pic. not that im an expert. still trying to get my piston valve to work. is it still an pneumatic? or changed to a combustion?

nice design, pretty basic how much PSI? and tip: wait for the glue to dry!

[neighboragrivator1]

sorry, i havn't figured out how to put pictures on so that they are visible. im probably retarded for this, but ill get them up as soon as i get it figured out![/img]

[anthony5640]

goto a website like http://www.photobucket.com and upload your pictures. once uploaded there should be a IMG code with simply add the link to the picture inbetween without spaces. or copy and paste the link already provided underneith the picture.
if your still stuck. there should be a help topic about this somewhere. use search

[neighboragrivator1]

finally figured it out!:D

[psycix]

Looks like an okay cannon.

You could modify the ball valve to make a breach loader.
Drill a hole in the side, as large as your barrel ID.
Via that hole you can load spherical ammo after twisting the BV.