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Ignition 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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Ignition Problems

Unread postAuthor: spudbud101 » Mon Jun 25, 2007 6:36 am

I just built my first mini, and it is the first combustion I have built. I guess it is the switch from pneumatic to combustion, but I hate not having a spark every time. I mean, barely a spark every 10 times I try, maybe 4 or 5.

So, is there a way to make a homemade ignition source, say from batteries?
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Unread postAuthor: chaos » Mon Jun 25, 2007 6:43 am

fly back transformer from a crt monitor or old cathode ray Tv :D

hope it helps

~chaos
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Unread postAuthor: spudbud101 » Mon Jun 25, 2007 6:47 am

Hmm... I has thinking about using a camera flash circuit...
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Unread postAuthor: jrrdw » Mon Jun 25, 2007 7:04 am

For a mini, i would think a camra flash ignition would be more in line.
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Unread postAuthor: mark0491 » Mon Jun 25, 2007 7:59 am

Ive built Coil guns & Rail guns using flash circuits and i must tell you that you dont get a Little spark but when you get those 2 leads connecting woohee you get a huge spark but yeah it should work Just make sure the leads are connected to the were the flash tube was Solder a puss button to the flash butto and the flash button and youl be golden
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Unread postAuthor: spudbud101 » Mon Jun 25, 2007 8:00 am

Wait... I just take off the flash tube, solder some extra wire onto the terminals, hook up the battery pack and push the button? That is it? I thought it was way harder than that!
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Unread postAuthor: spudbud101 » Mon Jun 25, 2007 8:36 am

HOLY crap. I just scared the damn hell outa me, dear god...

I got the camera circuit out, right? Poking around with pliers, hit the capacitor with em and SNAP. Holy fork. Jumped a MILE and chucked the pliers across the room. Got a REAL NICE spark, though, holy hell...

My problem now is getting the tube off, because the capacitor is bent over it and I'm sure as hell not touching that thing again.
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Unread postAuthor: lukemc » Mon Jun 25, 2007 9:28 am

spudbud101 wrote:HOLY crap. I just scared the damn hell outa me, dear god...

I got the camera circuit out, right? Poking around with pliers, hit the capacitor with em and SNAP. Holy fork. Jumped a MILE and chucked the pliers across the room. Got a REAL NICE spark, though, holy hell...

My problem now is getting the tube off, because the capacitor is bent over it and I'm sure as hell not touching that thing again.



ha ah been there done that. do you still have the adrenaline runing though you ha
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Unread postAuthor: spudbud101 » Mon Jun 25, 2007 9:30 am

Hell yeah I do.
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Unread postAuthor: Spedy » Mon Jun 25, 2007 10:03 am

heh... yah, gotta be carefull. but you can touch it again now that it is discharged. lookup "cammera flash" on the spud wiki
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Unread postAuthor: spudbud101 » Mon Jun 25, 2007 10:05 am

i did, but it makes no sense since my circuit isn't the one modded. See my other thread.
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