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I have no idea

Posted: Tue Dec 22, 2009 1:00 pm
by 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?

Posted: Tue Dec 22, 2009 1:04 pm
by 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 Image ;)

Posted: Tue Dec 22, 2009 1:12 pm
by kenbo0422
Also: do they have fins that stick out?

JSR: :lol: I do speak English.

Posted: Tue Dec 22, 2009 1:13 pm
by jrrdw
Or you can click me.

Posted: Tue Dec 22, 2009 1:22 pm
by jackssmirkingrevenge
kenbo0422 wrote:JSR: :lol: I do speak English.
That went completely over my head :?

Posted: Tue Dec 22, 2009 1:43 pm
by kenbo0422
АНГЛИЙСКИЙ, ДОЛБОЁБ! ТЫ ГОВОРИШЬ НА НЁМ?
:D

Posted: Tue Dec 22, 2009 1:56 pm
by jackssmirkingrevenge
Right, a subtle Pulp Fiction reference would have been more effective :)

Re: I have no idea

Posted: Tue Dec 22, 2009 1:57 pm
by Hubb
lit up!! wrote: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.

Posted: Tue Dec 22, 2009 1:58 pm
by 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

Posted: Tue Dec 22, 2009 2:02 pm
by Hubb
In other words, you're wanting a paintball/airsoft launcher...

Again, yes. We can help.

Posted: Tue Dec 22, 2009 2:04 pm
by jackssmirkingrevenge
If aiming isn't an issue, something as simple as this will do.

Posted: Tue Dec 22, 2009 2:11 pm
by lit up!!
im looking for something a little more of a challenge. but thanks though

Posted: Tue Dec 22, 2009 2:20 pm
by 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.

Posted: Tue Dec 22, 2009 2:24 pm
by lit up!!
how did he make the trigger?

Posted: Tue Dec 22, 2009 2:29 pm
by 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.