varies a bit depending on brand, but on the chip based ones, the head is about the size of a wooden strike anywhere real match not including the leads,
J

Just the info I needed. Thx.

Also if it helps here is an affordable easy way to do deployment charges and the way I have done them for a long time. In fact im sure many members use this same approach. But if you scroll thru the pages of this thread http://www.rocketryforum.com/showthread.php?s=&threadid=27663

I show how to do the holders as well as the ebay and the charges themselfs. (its my L3 build thread.)

Con, thanks. Thats exactly what I was looking for. I actually ground tested the PVC last night using estes ignitors and it worked great. What I discovered with the cardboard is that the botton, where the ignitor is blew apart and left the wadding in place - not ideal. I'll I need to do is find a flat end cap. The one's at home depot are all rounded. This technique will also work great with denverdocs aerocon vials...

Now I just need a few ematches for this weekend. I ordered some yesterday but doubt I'll get them by Friday... I don't think TT from GLR has any left after HellFire.

Great looking rocket by the way. Can't wait to see it fly.

Thanks.
KenP.

Xman,
I have some e-matches you can use.
These are very reliable, between chris and I probably ignited 40 w/o failure. As you know a multimeter is a rocketmans best friend. I'll have mine.
John

denverdoc, thanks. John Bixler is sending up 10 to Hartsel. It should be enough, but I still need to ground test using the altimeter. I ordered 20 through Quickburst, but I don't think I'll get them by Friday afternoon. If needed, I may need a couple from you on Saturday.

Thanks again. Everyone on this thread has been an incredible amount of help.

KenP.

Xman.

I must have missed you at Hartsel, had half a dozen prewired cannisters for you, maybe i can mail them.
J

John, thanks. I actually received my shipment from quickburst on the 21st, so I have plenty now. Decided not to do the DD thing at Hartsel due to my H cato. Wasn't feeling to confident after that. It will fly eventually.

KenP.

Duh, sorry I didn't make the connection--sometimes these avatars are a pain--kept asking anyone know who xman is, never having looked at the signature before heading out to hartsel.
John

Quickburst is good, and what I'll use EVENTUALLY for L3: http://www.quickburst.net/igniters.htm

For rockets under 3" in diameter, I use Pratt's WEC: http://www.pratthobbies.com/products.asp?cat=1

Denverdoc had some really good advice. Always, ALWAYS check continuity and ohms for the igniters. I carry a volt/ohm meter w/battery checker... don't forget to check the batteries, too. NEVER trust batteries out of a pack bought at any store; you never know how long they've been sitting there. You have EVERYTHING riding on 'em. And, don't worry; I've seen the best (people in the club that have a lot of experience and worthy of the highest respect) come down un-chuted. You're not alone, just do everything you can to make sure it will work, and fly it. Good luck!

Bruce,

It makes me wonder if there shouldn't be a stickied heading called "pearls" as in short for pearls of wisdom. In medicine we are always on the lookout for such, and the right one at the right time can be lifesaving (rocketsaving). So in this spirit I'll open a new thread so named. Please all contribute as it is thru collective wisdom most progress made, to paraphrase sir isaac, i see futhuh, cuz of my motha, and all the brothers 'fore me.
John