I have no idea

[lit up!!]

hi i would like to build a cannon to shoot Nerf rockets but don't know were to start. can anyone help me?

[jackssmirkingrevenge]

You're going to need to be a bit more specific if you want useful advice.

Are you looking for single shot or multi shot?

What sort of velocity are you after?

What size is acceptable?

What's your budget?

Do you want to power it with a fuel/air mixture (combustion) or compressed gas (pneumatic)?

Do you need it to be quiet?

Come up with a detailed specification and you'll find a lot of help. In the meantime, read though the

[kenbo0422]

Also: do they have fins that stick out?

JSR: I do speak English.

[jrrdw]

Or you can click me.

[jackssmirkingrevenge]

JSR: I do speak English.

That went completely over my head

[kenbo0422]

АНГЛИЙСКИЙ, ДОЛБОЁБ! ТЫ ГОВОРИШЬ НА НЁМ?

[jackssmirkingrevenge]

Right, a subtle Pulp Fiction reference would have been more effective

[Hubb]

hi i would like to build a cannon to shoot Nerf rockets but don't know were to start. can anyone help me?

Why yes. Yes someone can.

[lit up!!]

alright more detailed

im lloking for a single shot

not shure of the velocity but has to shoot 100+ feet

no longer than 4 feet long

i want it to be powered by compressed air

does not need to be quit

thanks

[Hubb]

In other words, you're wanting a paintball/airsoft launcher...

Again, yes. We can help.

[jackssmirkingrevenge]

If aiming isn't an issue, something as simple as this will do.

[lit up!!]

im looking for something a little more of a challenge. but thanks though

[jackssmirkingrevenge]

A sprinkler valve pneumatic then, it will give you the performance you want at 100 psi, not the most basic of designs but complex enough to give you a challenge with a reasonable chance of success, especially if its your first build. Also the parts you need are relatively cheap and readily available.

[lit up!!]

how did he make the trigger?

[jackssmirkingrevenge]

Have a look.

Many of your questions have probably already been answered elsewhere, I suggest you take a good look around the forum and wiki first.