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Could I?

A place to ask general spud cannon related questions.
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Could I?

Unread postAuthor: TwitchTheAussie » Wed Mar 07, 2007 5:27 am

Could I use this in a combustion as the ignition?

http://cgi.ebay.com.au/ws/eBayISAPI.dll ... &rd=1&rd=1

Any help is appreciated as I just won this.
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Unread postAuthor: joannaardway » Wed Mar 07, 2007 5:33 am

No personal experience, but it has been done. You might need to ask around.
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Unread postAuthor: TwitchTheAussie » Wed Mar 07, 2007 5:44 am

Thanks I'll try spud tech as well. Anybody else?
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Unread postAuthor: iknowmy3tables » Wed Mar 07, 2007 12:05 pm

its hard to do you'll need to set it up corectly, and the price of that thing will probebly just be the start of your expenses, if you still want to hear is some reference to start with http://www.spudfiles.com/spud_wiki/inde ... ition_coil
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Unread postAuthor: Matheusilla » Wed Mar 07, 2007 2:19 pm

It might be a lot of extra work for such a small spark. You will need the capacitor that goes with it, one from a lawn mower might work. Also you will need a rather large battery, one from an atv or something. Also you need to know if it is 12v or 6v. If automotive ign. for yer cannon is interesting for you, ya might wanna try finding an old buzz coil from an old car like a ford model T. You can also build your own buzz coil. It is called an induction coil, or even sometimes they're called medical coils (for shock treatment :shock: ). Nicola Tesla did a lot of work around these. If it's all the same though, you might just wanna use a stun gun like every other Joe Blo.

P.S. small sparks don't work very well in a cannon.
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Unread postAuthor: chaos » Wed Mar 07, 2007 3:45 pm

or just fork out the 13bucks at bunnings for a peizo ignition i used one in mine since and it has never failed

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Unread postAuthor: risto » Wed Mar 07, 2007 6:52 pm

you wont get a big spark out of that. I experimented with mine and the results were disappointing. Though, im no expert so maybe you can figure something out. good luck!
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Unread postAuthor: TwitchTheAussie » Fri Mar 09, 2007 5:16 pm

Ive now pulled an old power supply from an old computer and was wondering if these components would do anything with the coil?
Heres the pics:

http://i151.photobucket.com/albums/s129/TheDRunkMonkey_photos/Mar10_04.jpg

http://i151.photobucket.com/albums/s129/TheDRunkMonkey_photos/Mar10_03.jpg

http://i151.photobucket.com/albums/s129/TheDRunkMonkey_photos/Mar10_02.jpg

[url]http://i151.photobucket.com/albums/s129/TheDRunkMonkey_photos/Mar10_01.jpg

Sorry about the pics all Ive got is my webcam :oops: [/url]
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Unread postAuthor: chaos » Fri Mar 09, 2007 6:25 pm

@ twitch: use the [img] button instead of [url], your phtobucket seems as tho it is set to private therefore we cant see the pics if you use [img] it should work.
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Unread postAuthor: TwitchTheAussie » Sat Mar 10, 2007 12:12 am

Sorry I get confused sometimes :oops:
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Unread postAuthor: chaos » Sat Mar 10, 2007 1:01 am

no probs. i get that also :(
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Unread postAuthor: Killjoy » Sat Mar 10, 2007 2:24 am

I was disapointed also in the spark of an ignition coil, until I discharged a capacitor from a camera flash circuit into it, and with 2 coils connected together I can get about a 1.5 inch spark thats probably about 1/16 of an inch thick. And suprisingly this doesn't fry the insulation of the coil, considering the coil is made for 12 volts and your pumping about 300 volts through it. Ive discharged a camera flash into mine more times then i can count (or remember) and it still works great.
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Unread postAuthor: TwitchTheAussie » Sat Mar 10, 2007 4:07 am

Madness. Could you draw a diagram or something for me?
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Unread postAuthor: chaos » Sat Mar 10, 2007 6:00 am

yer i thought you would have known this i looked into this a while ago. if you take a heap of those capacitors all the same voltage and micro farreds, and wire them in a series charge them up with a camera circut you should be able to achieve that nice hot spark you want :wink:
if you are confused just google it and you should find the answers you want.

peace
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Unread postAuthor: Killjoy » Sat Mar 10, 2007 5:17 pm

Heres a the circuit
Image
Connect the coils with + to- just like in the diagrahm, and the spark will originate between the two HV outputs (center post on most ignition coils i think). The diode is to keep the camera flash circuit and capacitor from getting cooked because an igniton coil is an inductor and when you stop applying current and the magnetic field collapses, a current is induced both in the hv windings and the primary, meaning the circuit and cap get hit with about 800+ volts, which it doesn't take to well. This isn't the best explination, but just take it form me, the diode will save you a lot of touble. Mines 1KV 2.5 amp and it works fine.
Also you'll need to make your own switch because most switches will fuse and no longer work because of the large spark produced from the capacitor discharging. I used a solinoid and copper plates (soon to be upgraded to tungston), and the solinoid pushes the plates together.[/img]
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