Semi Automatic Golf Ball Cannon

[Gun Freak]

Haha, no worries.

[CannonCreations]

so if I make this piston and put it into a 2" T and have a 2 inch pipe, down to a 1" pilot on one side, and a 2" to a 1.5" on the other, it will work? I am getting confused, i thought it was the size of the piston face that determined which direction it would go. will i be bale to use it the way i listed?

[Gun Freak]

Sounds right, that's how I do it.

[CannonCreations]

do I need to modify the adapter, so that the 1.5" barrel goes into the T, or can I do a regular adapter, and go from a 2" to a 1.5" outside of the T?, do I have to modify anything inside of the T, or can I just put the piston in it?

[Gun Freak]

Yeah the pipe needs to go into the tee, so modify the bushing.

[mattyzip77]

Maybe this will help??

http://i715.photobucket.com/albums/ww15 ... nvalve.jpg

[CannonCreations]

Yes it is helpful,but one question, where does the air go in in the picture u posted, cuz if it goes in behind the pilot, it wont make it to the chamber

[Crna Legija]

Yes it is helpful,but one question, where does the air go in in the picture u posted, cuz if it goes in behind the pilot, it wont make it to the chamber

there needs to be a small leak between pilot and the chamber.

[mattyzip77]

depending on the type of piston you use, you may have to make a small check valve, and or a few small equalization holes. This is what confused me when I started making ptstons!!

[CannonCreations]

If i use gun freaks washer and o-ring piston valve, like shown farther up, i wont need to make and equalization holes, will I?

[Gun Freak]

Nope, it has a check valve.

[mattyzip77]

Thats what the xtra rubber washers are for, its a home made check valve:D