Hey guys

Going to get my new cannon built this weekend. Found all my new pipe i will need.

Only questions i have are:

What is a reliable way to fill the chamber with air? Bike valve, quick connect?

From what i have seen with the piston diagrams, i have noticed one thing. If i use say a 1 inch ...

sounds sweet(Y) will get to it

vid of full gun firing with vid of entrance and exit hole

alright, i will consider the fan. Heres a question which i hav enever had answered. How long should the fan be for? 5 sec? 10 sec? 15 s?

and here are the numbers so you guys can crunch them, see if i made some mistakes. I have 21 inches of chamber with an ID of 4 inch. That is 265 inches cubed of ...

and the new video with it shooting and the damage

abs...you must live in canada , glad to another

well i have decided to take the leap into pneumatic cannons. Going to a simple straight forward setup. Only issue i have is picking between a ball valve or piston? Should just tough it out and go for the ball valve?

well i have spent the better part of an hour and a half hunting down my problem and to be honest, there isn't one. Everything is fine. Good spark, fan and propane but no boom?

So i have narrowed it down to two issues:

1 too humid out
2 the spark is in front of my fan, could that my starving the ...

Here you go starman. I used some tape on the handle to help give it a cleaner look by taping over the wires (looks like a grip now as well)

http://i179.photobucket.com/albums/w293/uncomplientspud/IMG_2817.jpg

Here is how it is attached to the chamber, allows for refitting if i ever have the need ...

9 is too young, even with supervision imo, thats grade 3 is it not? You shouldn't be showing these to kids like that. i would agree with a above and say grade 6 is a good age

alright, got some pics of the gun with the 10 foot barrel on it.

http://i179.photobucket.com/albums/w293/uncomplientspud/IMG_2813.jpg

and my personal fav
http://i179.photobucket.com/albums/w293/uncomplientspud/IMG_2814.jpg

here is the vid, sorry i didn't get it actually firing this time, the ...

i hope to pick up the longer hose clamps tonight, so i will be able to make everything look clean. The end cap idea sounds really good, not sure why i didn't think of that, thanks for that one spuddin. I will clean up the clamps and straighten out the wires today and post some pics for you guys

I like it, looks like it could eat you and then shot you out.

Only thing you might want to change in the future is your propane tank, you might want to mount it to the chamber to get it out of the way. Other than that good job

i made my handle, thanks for the help guys. If you would like to see it, it is in the combustion showcase, if not, thanks for the pointers

Linky for those who don't want to scroll down to the bottom http://www.youtube.com/watch?v=xXOEqNJ165c

Well after the success of my first gun, i decided it was best to retire it for safety issues. On this one, it is using the same metering system as my first, and that is it. Chamber is 4220 cc with ...