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Second One

Built a miniature cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Second One

Unread postAuthor: VirusX » Tue Nov 03, 2009 10:24 am

So this is my second - and compared with my first one - very advanced Mini Cannon.

It's made out of low flammabality PVC-pipes, but unfortunately not pressure-rated. (That kind of pipes don't exsist in our building stores)

Well the caps are wood reinforced and everything is glued together with epoxy and screwed, too. Only the two middle parts are connected with a depth bolt, so I can open the champer when somethins is not allright.

I use little 6mm steel bullets, a magnet at the end of the barrel holds the bullets in position.

The sparkle comes from a piezo ingition connected with two screws.

I'll upload some damage pics or vids the next days, the weather is too bad right now :?

I hope you like it :D
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Attachments
IMG_2670.jpg
Wood reinforced barrel with a little magnet to hold the steel ammo.
IMG_2659.jpg
Chamber and wood reinforced caps.
IMG_2674.jpg
Ammo
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The Cannon
I'm sorry, my English is not so good but I'll try my best!

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Unread postAuthor: vardas » Tue Nov 03, 2009 2:16 pm

lookin good what fuel do you use & are you metering it?
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 03, 2009 3:07 pm

Your chamber volume is overkill, and if it's minis with performance you want, you're better off turning to pneumatics ;)
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Unread postAuthor: psycix » Tue Nov 03, 2009 3:40 pm

jackssmirkingrevenge wrote:Your chamber volume is overkill, and if it's minis with performance you want, you're better off turning to pneumatics ;)

Why, because YOU failed at mini-hybrids? :P
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 03, 2009 3:46 pm

psycix wrote:Why, because YOU failed at mini-hybrids? :P


That book is not yet closed, my clog wearing tulip sniffing windmill framed friend. Don't you have a dyke you need to stick your finger in?

I love this casual national hate :D

Not just yet though, I'm currenly making a HPA 3/4" coaxial... which may yet fail, we'll see :)
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Unread postAuthor: theBOOM » Tue Nov 03, 2009 4:02 pm

Nice gun :P I'm also building 2 mini guns.. one made out of pvc that uses a chamber fan , dual ignition and a burst disc setup that will be used at a 2x mix and I'm building a mini copper hybrid still need to find a fitting but I'll post it soon...

You might want to look into using fans and some type of meter system to get accurate fueling to get optimum performance. :roll:

JSR don't disincourage the mini builders :cry:
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Unread postAuthor: jrrdw » Tue Nov 03, 2009 4:59 pm

jackssmirkingrevenge wrote:
psycix wrote:Why, because YOU failed at mini-hybrids? :P


That book is not yet closed, my clog wearing tulip sniffing windmill framed friend. Don't you have a dyke you need to stick your finger in?

I love this casual national hate :D

Not just yet though, I'm currenly making a HPA 3/4" coaxial... which may yet fail, we'll see :)


Push pull, pull push...you guys every get your directions right, you'll be dangerous! :roll:
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 03, 2009 10:27 pm

jrrdw wrote:Push pull, pull push...you guys every get your directions right, you'll be dangerous! :roll:


It's all friendly banter, when the war between Greater Europea and the second Babylonian Empire finally kicks off, we'll be there side by side in the trenches, pop-off autos in hand, raining marbles on the invading hordes :D

Back on topic, I don't think you should be suggesting hybrids, mini or otherwise, to someone who only seems to have DWV at his disposal :P it's a well made mini, mind you, the use of wooden plugs epoxied in place reminds me of my own early piston designs.

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Unread postAuthor: tghhs » Tue Nov 03, 2009 11:12 pm

Seems pretty safe, Balsa is a hard wood :P


EDIT, Reference (in case it's questioned) http://en.wikipedia.org/wiki/Balsa_wood
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 03, 2009 11:31 pm

tghhs wrote:Seems pretty safe, Balsa is a hard wood :P


Technically, yes :) and I took the above design to 80 psi without failure, note that it's a fairly thick plug though.
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Unread postAuthor: psycix » Wed Nov 04, 2009 6:10 am

The above design has excessive pilot volume. Add another balsa-donut!
Can the air leak past the syringe piston for equalization? I thought those were pretty airtight.


That book is not yet closed, my clog wearing tulip sniffing windmill framed friend. Don't you have a dyke you need to stick your finger in?
:lol:
Well, at least I can put my finger in the dyke without having to worry about it hardening.

we'll be there side by side in the trenches, pop-off autos in hand, raining marbles on the invading hordes

We'll be there side by side, but actually I'd rather drive around in a 4x4 with a pneumatic gatling gun on top.
Wait a minute... you have a jeep, right?... lets start off by painting it camo.
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Unread postAuthor: inonickname » Wed Nov 04, 2009 6:40 am

psycix wrote:
That book is not yet closed, my clog wearing tulip sniffing windmill framed friend. Don't you have a dyke you need to stick your finger in?
:lol:
Well, at least I can put my finger in the dyke without having to worry about it hardening.


The proverbial pink elephant is not just in the room, but an entire hoard of them.

Can the air leak past the syringe piston for equalization? I thought those were pretty airtight.

Look again, two schrader valves.

OT: Cool gun, but I'd certainly look into better construction materials if you want to step it above a spray 'n' pray.
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Unread postAuthor: jackssmirkingrevenge » Wed Nov 04, 2009 10:00 am

psycix wrote:The above design has excessive pilot volume. Add another balsa-donut!
Can the air leak past the syringe piston for equalization? I thought those were pretty airtight..


I was 16 when I made this, Jeebus that was 11 years ago! I was young and foolish :roll: and yes, airtight piston so 2 schraders.

Well, at least I can put my finger in the dyke without having to worry about it hardening.


Ten points ;)

We'll be there side by side, but actually I'd rather drive around in a 4x4 with a pneumatic gatling gun on top.
Wait a minute... you have a jeep, right?... lets start off by painting it camo


It's a Landrover, NOT a Jeep :evil: and yes, the plan is to have it in desert sand colour.... eventually.
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Unread postAuthor: POLAND_SPUD » Wed Nov 04, 2009 11:00 am

psycix wrote:
That book is not yet closed, my clog wearing tulip sniffing windmill framed friend. Don't you have a dyke you need to stick your finger in?
:lol:
Well, at least I can put my finger in the dyke without having to worry about it hardening.


you sound like a couple :D
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Unread postAuthor: psycix » Wed Nov 04, 2009 12:03 pm

Ah I didn't notice the second shrader. Who the heck would use two fill valves?



Yes poland, if it wasn't for the distance, age and the (assumed) combination of genders, I could be wearing a wedding ring by now, made out of epoxy, of course.

JSR, don't forget to post it when you've painted your jeep.

VirusX, sorry for the thread hijack...
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