i am making a cannon that has a barrel of 2.5 inches and i just happen to have some solid steell ball bearning that exact size. i dont know but i think that is capable of some damage. they are very heavy too. cant wait till im done with the cannon.

probally would be a good way to get french fries though.

there probaly is no max. if conditions are right and its really loud coul be heard miles away. but that would have to be realy loud.

ya today i decided on building a combustion and i think i can finish it up tommarow

didnt they do that on myth busters? i think they did. you should actually use liqued oxygen and moonshine. they where gonna do that to buy they didnt

i had my ears gauged once. but when i took them out i couldnt figure out how to get them back in.

some people just have way to much time on thier hands

wow man u must be like wow

the sprinkler valve is used to realease the pressurise air in the air chamber. with out a valve u have no cannon. well that aint completly true because u have burst discs. if this dont help use the spud wiki.

i dont think they make bbs that big. maybe you could use some ball bearings. or u could like find some way to make your own cause ive only seen bbs come in one size. too bad

well its going to be a home made barrell sealing valve. i have a couple of pipes laying around and because i dont want to be spending to much money i want to make sure i dont screw up and have to buy new stuff.
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solder i would say is not suited for the job. what u need to do is to braze it . that is much stronger. the difference is that solder melts under 800 degrees and the stuff u use for braze melts above 800 degrees. i believe u can just use a steel hanger for that. although i dont think u can melt ...

abs isnt pressure tested so u wont get schedule 40 or 80 but abs is great for combustion cannons since they dont explode the just tear. pvc on the other hand can explode into shrapnel

u know if u used alot of duck tape it probaly wont explode. but i mean a lot

thanks cause i really didnt know