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My Funnest New Mini

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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My Funnest New Mini

Unread postAuthor: Spitfire » Mon Jun 02, 2008 2:50 am

This is the second mini I Have made, and by far the most successfull, and fun.

Specs- Chamber: 50mm pvc, 230mm long.
Barrel: 17mm pvc, 905mm long.
Chamber Fan, butane injection, BBQ igniter.
Spark gap is two wires mounted inside chamber.
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Two nuts taped together shot at a piece of hardboard
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As always comments and advice to improve(if any :wink: ) are welcome
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Unread postAuthor: psycix » Mon Jun 02, 2008 4:49 am

Looks nice.
I like the way of your "fueling system" simple, yet effective (I think).
I like that fan too! I looks really cramped up in there :P
Did you also cut the blades?
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Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

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Unread postAuthor: flamerz14 » Mon Jun 02, 2008 4:52 am

Nice one you got there :) interesting fueling system. Whatcha make it out of?
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well, this isn't much isn't it?

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Unread postAuthor: Spitfire » Mon Jun 02, 2008 9:01 am

The fuel system is effective after practise as you dont get exact ammounts every time. Zippo lighter gas fed via pipe I use as fuel lines on a remote controled plane(plane doesnt exist anymore).

Close up of the fuel system
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I had to cut about 1mm of all the blades to get it to fit. Must still hook it up to a battery and switch tho. was about an hours job to fit it and get it in there
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Unread postAuthor: starman » Mon Jun 02, 2008 12:50 pm

Fairly innovative little gun there. You don't see many butane fuel setups. I suppose you are "metering" your fuel by just counting the squirts or maybe just one universal timed squirt gets the job done.. :wink:

You should tie down or shorten your fan wires, maybe some heat-shrink tubing could neaten things up there. Also, while I can tell you've put some effort into you ignitor holder, it seems like a shock hazard with all the bare, exposed wires.

I guess you're airing out via a cleanout cap in the rear. A little valve back there would make that a little easier.

What is that you shot a hole into?
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Unread postAuthor: psycix » Tue Jun 03, 2008 6:51 am

Ah you havent used the fan yet?
In that case the best is yet to come :D

Does that fuel line need to be that long?
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Unread postAuthor: Spitfire » Tue Jun 03, 2008 7:34 am

I must visit the electronics store to get a switch for the fan, Thanks for the heat shrink idea. I have closed up the wires with insulation tape so there its :thumbright:
Shot the hole into hardboard. I have just come back from shooting marbles through a old piece of 4 ply plywood.

I suppose not, Will shorten it soon.

Do i just mount a valve into the cleanout cap?
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