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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

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…   Read more»

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…   Read more»

Just the info I needed. Thx.

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 trying to plan ahead, but how big is the ignitor on an e-match (length and diameter)?KenP

you got it, I’ll bring several of each size,J

John, if you could bring a few to Harstel, I’d be obliged.Thanks.

Thats the reason I like re containment, even tho my quest was originally to fly smokeless, containment I believe generates a more consistent ejection charge and avoids the altitude issues. So generally what I do is to melt a small…   Read more»

John, Thanks. If you could part with a few that would be great. I’ve been trying different tubes (1/2 lug tube, first fire tube, cardboard hanger tube) with mixed results. Can’t seen to get a consistent deployment. In one instance…   Read more»

Xman,Aerocon has some cannisters for sale (centrifuge vials)–i can give you a bunch if you want as they aren’t the right size for my stuff–I bought like 500 screw capped 5 mil plastic vials for another hobby/biz that I now…   Read more»

OK. Thanks.

Correct, you really don’t have to worry about it touching anything. Its mostly the concern about could if it could break the wire by working its way back and forth. If done on the launch field it can just hang…   Read more»

Really, however you want. If it works, it’s good enough 🙂

Thanks. Do you just leave the charge dangling by the wire in the airframe or is it taped or otherwise attached in some way to the airframe or bulkhead?

The latest thing I’ve seen is to use 1/4″ diameter surgical tubing. Put your e-match in one end and secure it with a tie wrap, put the amount of powder you need in and secure the other end the same…   Read more»

Thanks. How do attach a quickburst canister to the tube or bulkhead?.

Or, if you really want premade, Quickburst makes ejection canisters that have their Cosmos e-matches (highly reccomended – that’s all I use). Great products – looked at them at LDRS.

I’ve had pretty decent results using a small piece of 1/2″ copper pipe and an end cap. I epoxied the end cap to the bulk plate and just for extra strength, drilled a hole through the end cap and bulk…   Read more»

Check the Contest area and look for the NAR Event in 2007 for updates on this thread.