new ignition

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Postby nighthawkman » Sun Mar 04, 2007 3:05 am

First time I ever started playing with disposible camera capsitors i always wanted to make them intoo ignitors for spud guns. here is one design i have been playing with. I can get a perfect seal too with a o ring. im kind of new to experimenting with spud guns so please give feedback on why this might not be a good design or why it is a good one. on a fresh battery it sends sparks everywhere.

http://s80.photobucket.com/albums/j176/ ... 010167.flv

Image my camera loves to fusterate me
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Postby nighthawkman » Sun Mar 04, 2007 3:10 am

here is a working link <a href="http://photobucket.com" target="_blank"><img src="http://i80.photobucket.com/albums/j176/hunterusa/p1010166.jpg" border="0" alt="Photobucket - Video and Image Hosting"></a>
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Postby DK » Sun Mar 04, 2007 4:05 am

Nighthawkman,

I must admit, I've never seen, or thought of, a design quite like that before! Do you get any kind of a shock when pressing the electrodes together?

As for criticism:

Yes, I think it is a good idea, however, you will want to make sure that there is some thick insulating material on the electrodes. Otherwise, it might hurt like a bugger when you press one down!

It is a good design because of the fact that one of the electrodes contracts. The standard design is to have the electrodes stationary and have a spark jump the gap between them. When using a camera flash circuit without an ignition coil the electrodes need to be very close together. With each spark, the electrodes erode, requiring that they be adjusted every few shots. Using an automotive ignition coil eliminates this problem, but you run into another with the camera circuit burning up when you use it (if you're wondering what it is i'm talking about, a discussion on what a camera flash ignition coil setup is and how to make it can be found <a href="http://localhost/forums/viewtopic.php?t=13685&SearchTerms=camera,flash">here.</a>). With your design, the erosion problem could be greatly reduced because the contacts are "adjusted" every shot. Considering it also operates at a lower voltage than the ignition coil circuit, this design may also reduce the chance of the camera flash circuit burning out.

Again, nice idea. I'm impressed 8).
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Postby spuzi14 » Sun Mar 04, 2007 9:41 am

To quote the French guy from the Angry Beavers...Ahoi!

I would have never thought of that! A very good idea indeed. I had put some thought into using a camera stungun but my idea was more complicate involving a pivot and a bunch of hoo-hah.
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Postby SMOMW » Wed Mar 07, 2007 4:07 pm

Awesome... I was just trying to figure out a good aplication of camera capacitors for this..

does it ignite in the chamber or have you yet tried this?

an interesting thing to try would be hooking it up to a gear or pully system connected to a trigger, that way your not actually touching the electrodes.


what are you useing for the bolt to pass through and slide down? is there a washer or o-ring?

please post a parts list of your device. I'm realy interested in this.
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Postby frankrede » Wed Mar 07, 2007 11:53 pm

Ah thats a good idea, maybe you could encase it in a T a use a piston/to push it down.
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