SpudFiles

This is my first post on Spudfiles. This is my simple yet powerful combustion cannon. It is all made with PVC Pressure rated pipe and uses a BBQ sparker. Its main ammo is golf balls but i use polystyrofoam plugs as well too shoot anything from rocks to spears.

Please feel free to comment or ask questions about the cannon.

I am planing to make a pneumatic cannon in the next couple of weeks so any tips/pointers/suggestions would be muchly appreciated!!!

Damn! Thats strong for being so small! Use the barrel for you pnuematic and it would be way stronger than this. Dont shoot at street signs and put a shirt on. Please.

Indeed, sorry about the signs sort of didnt think. I will use 40mm for my pneumatic but what i need to know is weather to mod my sprinkler valve or not?

Its all up to you

Speaking of which, will sprinkler valves preform reasonably well in an un-modded state?

Better than a ballvalve at least...

is it ok for in a pneumatic gun the air to go through the stock before shooting the projectile?

hey J wats up thats a nice gun i nerever rlized it was like that and so clean u gota tell me the dementions 8)

Its ok, but it will reduce the power, and flow. It's something you want to avoid.

edit: did you use primer at all, or was it the clear kind?

Yeah i used primer but i have painted it in a dull skull white.

Hey ben, this what u want?
40mm barrel, 50mm conbustion chamber, the part were the sparker is is also 40mm. Its length together is about 42" (107cm)

thanks for that chap and how good is the 40mm fit for golf balls 8)

i would definatly reccomend modifying the sprinkler valve, it makes it so much more powerful for only a few dollars extra.

Those are some nice shots. Did the tree have the red marks a few days after or like immediatly? That is really cool. Great job for your first cannon it has a cool design and is very clean. Where did you get 40mm pipe? I guess you don't live in the U.S.

Thats a realy nice looking cannon... Good Job.
I recomend modding the sprinkler. By the time you buy the switches the box the wiring and the electronics it prob would be the same price to get a fitting and a airgun anyway. And if you did a gas through stock it would reduce the efficiancy.

Basically, i just repeated what other people said but i didnt realize that till after i wrote it

Dang that looks quite nice! The chamber seems a bit small. With a larger chamber you will get more power and you might be able to put a hole in that road sign.