Peizo, sparker or 9V?

[dan-27]

Hi there. I'm having some issues with my spudgun (My first!)

I started by using a peizo sparker from a gas fire, this worked really well arcing about strongly with 1/8" - 1/2" gaps. The problems began when the antiperspirant went into the chamber, then I think it coated the electrodes in something but for whatever reason it wouldn't spark or cause ignition.

So I moved on to a lantern sparker, this worked really well and we launched some spuds & apples. But I get about 30 sparks before the flint needs changing which requires dismantling the whole gun. On top of that it rusted terribly, so much so that the spring gets stuck and wont push the flint.

So now I'm looking for a third method of ignition. I don't really want to spend too much money if possible, and the weight involved with using an ignition system from a car isn't too appealing. I have been looking at the $22 9V igniter's on http://ultimatespudgun.com. How well do these work, how easy are they to fit and how often does it require maintenance / new batteries.

All advice appreciated.

Thanks a lot

Dan

[jackssmirkingrevenge]

It seems a shame to compensate for poor fuel choice by changing the ignition, have you tried starting fluid, or syringe metering from a gas burner or lighter refill butane?

[Hubb]

Like ^ stated, I'd change the fuel before changing the sparking system again. My current cannon has seen over 100 shots off of the same piezo sparker now, simply because I'm using a better fuel. My spray-n-pray saw about the same number yours did.

[motorfixer1]

You might want to search a little more before asking questions. However you might look at your local hardware store for a single AA grill igniter. Should run you around $15usd. If you still want to use spray fuels, you might try something that contains no water and leaves no residue, that's all I can tell you about spray fuels. Your electrodes should most certianly be stainless to prevent the corrosion on top of better fuel choices.

[Zeus]

Powered igniters are the way to go, and the triggers can be a lot nicer.

Also shorten your spark gap so it will allways fire, have the gap half the length of the maximum spark that the igniter will create. That ensures reliable ignition.

[dan-27]

Thank you all. I shall revert back to the piezo and try different fuel types.

Thanks

Dan

[jackssmirkingrevenge]

Good man, have a read through the and if you need further advice just ask if the search feature doesn't satisfy your request.