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wierd pezo problems...

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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wierd pezo problems...

Unread postAuthor: flamerz14 » Fri Dec 01, 2006 11:20 am

when i was testing the pezo it worked for a wile but when i put the wires to pins and attached them to my mini and wrapped electrical tape, it stopped sparking at the gap. i tried closing and opening the gap but no difference...when i removed the tape and clicked, i saw the current run ABOVE :shock: the insulated part of the wire...what happenned?
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Unread postAuthor: jjjd » Fri Dec 01, 2006 11:30 am

how long was the length of insulation, if it was like 1" i could see it happening
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Unread postAuthor: flamerz14 » Fri Dec 01, 2006 11:36 am

yup..its around that length...wats wrong? after i took it out of the pill bottle and tried it, it worked. :?
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Unread postAuthor: MisterSteve124 » Fri Dec 01, 2006 5:28 pm

Thats not weird its just peizo igniters suck. Or it could just be that the wires aren't making contact with the pins. Wrap them around a couple times
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Unread postAuthor: sjog » Fri Dec 01, 2006 8:58 pm

I made a clean spark strip, then bench tested it and it worked well.
Then I built a gun around it-- it would'nt work. Tried 2 pezieos, still no spark. Took out strip put in 2 longer bolts plus ground , worked well.

Pezeios are cheap and easy to get but they suck.

From this site there are links to get BATTERY igniters ,30 bux well spent.
Can be hard to tame spark but but very consistent after set up.

2 sparks much easier with BATTERY igniter
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Unread postAuthor: MisterSteve124 » Fri Dec 01, 2006 9:00 pm

or a bbq igniter
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Unread postAuthor: jjjd » Fri Dec 01, 2006 10:28 pm

regular bbq ignitors dont have enough power to jump 2 gaps, they can but suck at it
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Unread postAuthor: ProfessorAmadeus » Fri Dec 01, 2006 10:44 pm

Or use a stun gun...
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Unread postAuthor: Flying_Salt » Fri Dec 01, 2006 11:37 pm

jjjd wrote:regular bbq ignitors dont have enough power to jump 2 gaps, they can but suck at it


Oh really? I made a 4-gap one. I'll film it and upload it later. Seriously.
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Unread postAuthor: flamerz14 » Sun Dec 03, 2006 9:39 pm

so...how do i do a spark strip for a mini?
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Unread postAuthor: Flying_Salt » Sun Dec 03, 2006 9:48 pm

My camera is messing up, so here's a diagram. I put it on an old ruler and used copper wire (good conductor)

Image
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Unread postAuthor: flamerz14 » Sun Dec 03, 2006 10:10 pm

ok...but my pezo has only 1 wire which i attach to a pin . there is another pin which is not wired. occasionally theres a spark..
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Unread postAuthor: flamerz14 » Sun Dec 03, 2006 10:14 pm

heres the pic..

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Unread postAuthor: SpudStuff » Sun Dec 03, 2006 10:29 pm

Where is the spark going to go to? It is just like a electrical circuit. Needs an anode and a cathode.
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Unread postAuthor: flamerz14 » Mon Dec 04, 2006 12:21 am

the spark is between the two pins.bench testing showed that sparks were flying but when i put them into a pill bottle for my mini, it was like the bottle conducted away the current from the spark, thus not igniting the fuel i had sprayed in(being after-shave and air refreshener
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