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Could I?
Posted: Wed Mar 07, 2007 5:27 am
by TwitchTheAussie
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.
Posted: Wed Mar 07, 2007 5:33 am
by joannaardway
No personal experience, but it has been done. You might need to ask around.
Posted: Wed Mar 07, 2007 5:44 am
by TwitchTheAussie
Thanks I'll try spud tech as well. Anybody else?
Posted: Wed Mar 07, 2007 12:05 pm
by iknowmy3tables
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
Posted: Wed Mar 07, 2007 2:19 pm
by Matheusilla
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

). 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.
Posted: Wed Mar 07, 2007 3:45 pm
by chaos
or just fork out the 13bucks at bunnings for a peizo ignition i used one in mine since and it has never failed
peace
chaos
Posted: Wed Mar 07, 2007 6:52 pm
by risto
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!
Posted: Fri Mar 09, 2007 5:16 pm
by TwitchTheAussie
Posted: Fri Mar 09, 2007 6:25 pm
by chaos
@ 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.
Posted: Sat Mar 10, 2007 12:12 am
by TwitchTheAussie
Sorry I get confused sometimes

Posted: Sat Mar 10, 2007 1:01 am
by chaos
no probs. i get that also

Posted: Sat Mar 10, 2007 2:24 am
by Killjoy
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.
Posted: Sat Mar 10, 2007 4:07 am
by TwitchTheAussie
Madness. Could you draw a diagram or something for me?
Posted: Sat Mar 10, 2007 6:00 am
by chaos
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
if you are confused just google it and you should find the answers you want.
peace
chaos
Posted: Sat Mar 10, 2007 5:17 pm
by Killjoy
Heres a the circuit

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]