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 plate and dropped a 6-32 screw through the whole thing.

Ken

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.

Thanks. How do attach a quickburst canister to the tube 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 way. Its advantage is that ALL the powder burns because its under pressure. It ruptures the tubing and there is no residue to clean up. I believe they have been using this idea for some time on the super high altitude attempts at Black Rock.

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?

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

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 there.

Doug

OK. Thanks.

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 use for rockets--these are graduated so nothing to weigh, and friction fit in a copper or PVC end cap--screwed to the BH. But theres a hundred ways to do it--you can do the surg tubing gig, and that way also never worry about high altitude employment with it.
John

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 1.5 g of powder and first fire ignitor tube pops the chute and nose out easiliy, on the other hand 2g of powder and 1/2" lug won't even deploy the chute. Don't know if it's the material the tubes are made but it seems that the lug tube disintegrates whereas the first fire tube and hanger tube don't. Kinda wierd. I've already burned through more than a dozen estes ignitors. All of the neighbors are getting a kick out of the deployment testing though!

Since the 22'nd at Hartsel will be my first attempt at dual deploy, I'd really like to get it right the first time if you know what I mean... Until I can get consistent results, I probably won't fly DD.

Can we arrange to meet so I can pick up a few? I live in Lafayette.

Thanks...

Ken.

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 hole in the back of the vial, pass the e-match thru it, use a glue gun to seal it from below. Add BP, then wadding, then hot glue, then the vial cap. I have many I can mail--just need an address-- or show up sat at Hartsel. But let me know beforehand, so I will remember to bring a bunch.
John S

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

Thanks.

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

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

KenP