should do, they all work on the same princilple

oooh, bonzi buddy, hate it

jjst spray and launce, its about the simplest thing u can make

i prefer pneumatics for my area (residential) cos theyre quieter. if i had land id go with combustion cas they are more fun and easier and faster to shoot

wait wait wait, you said your mate used DWV (darinage) pipe for his pneumatic cannon? wow, i thought it would blow up, i mean, i use it fpr combuistion but that only get 50psi max ish.

how did that perform?

also, has ne1 got an idea of the pressure that DWV pvc can withhold?

indeen a very nice cannon, love to see it fire in the dark...

drac: oh, ok then. i thought sweating was just heating up the copper so it expands into the othe part or copper and they somehow just stay like that...
thanks for the info

blb, yes, they are illegal in australia as well, thats ANY device designed to reduce noise.

trh making a stun gun, theres plenty of plans on the net. or just get a whole bunch of capacitors and use them for each go

solder is not gunna be strong enough to take any pressure, it is used strictly for electrical work and isnt strong at all.

i think for copper u use a tekneek called sweating, its on the wiki

copper can take a fair bit i think.

soz 4 the spelling i cnt b bopthered

mmm, coke...

a mate and i made 2 cannons in 10 minutes yesterday. we got one 1.25L bottle and a big 2L bottle, one was 1.5" diametre barrell and the other was 2.5".

we just duct taped the barrell and chamber together, then we drilled a hole at the end of the chamber. to shoot we just held the bbq ...

why not wrap them up in paper and shoot, that mite work, then tey should still break apart cos of the relative wind

ok, here is a fun game...

gring up the sparkler stuff so that it isnt on the sticks anymore, just powder.

now get a tennis ball and cut/drill a hole about 10mm diametre in it, now you want to fill the tennis ball up with the powder right to the top.

stick a new sparkler into the ball as a fuse ...

i guess it is just a matter of getting the barrell just the right length, where the pressure in the chamber is just enough to keep pushing but wont slow the spud down.

the image has to be a certain format and no bigger than 250kb, that mita been theporb