You would be surprised how much 1 gram can do when topping it on to what exist.

Oh yeah, VERY GOOD POINT! Tell you what, I'll add a half a gram to each redundant charge, meet ya half way. I KNOW that much will only add an extra precautionary push without doing any damage.

your chances for damage are pretty slim as that its a Glass rocket and Convolute at that. I can tell you that the tubing you are using will handle a 12 gram charge or better no problem. I tested mine to 12 grams. same tubing. But that should be fine what you are doing.. so do I still get to sign ya off? lol

But that should be fine what you are doing.. so do I still get to sign ya off? lol

That's up to you. Ha! After getting a night's sleep, bumping each redundant charge up 1/2 gram will be a little added protection. The thing that keeps going around in my mind is that 1 extra gram blew the booster up on my last rocket, since fixed, and WASN'T a G10 airframe. I know the airframe will handle it, and the harness is strong. It's a pretty large gray area that works as far as how big the charge can be, I just don't want to go outside that gray area on either side. It'll work.

Bruce, you've done a spectacular job on that rocket. I can't wait to see it fly. With all the thought and experience that you've put into it, as well as the support you've gotten from other club members, I'm sure you've maximized your chances for success. It'll be awesome.

as well as the support you've gotten from other club members, I'm sure you've maximized your chances for success.

You hit the nail on the head there, Batman. No one does it alone, and I've gotten support from the best.

with your ground tests I feel comfortable with how ever you go as long as you are not going down...fast I mean:) you have put a lot of thought and taken a lot of input from others and I fell you are going to make the right decision. I would go with the "blow it apart or blow it up" mentality on the remote charges because there will be no damage to the rocket if all is out and it it is not out you better make sure it does get out:)

JamesR
your L3CC

I would go with the "blow it apart or blow it up" mentality on the remote charges because there will be no damage to the rocket if all is out and it it is not out you better make sure it does get out:)

JamesR
your L3CC

Got it.

I would go with the "blow it apart or blow it up" mentality on the remote charges because there will be no damage to the rocket if all is out and if it is not out you better make sure it does get out

I agree. On the maiden flight of Freeze Frame I had tested the amount of charge on the ground for apogee and decided to use the same quantity as the back-up. I figured the first charge would at least shear the pins and in case it didn't completely separate the back-up would push it apart. Wrong, both charges went, shear pins sheared and it still stayed together. Fortunately the nose separated at apogee so the main deployed then. I guess this was a case of two failures make a(n apparent) success. Next time I'm going with 6-32 shear pins for the nose cone and double the charges at apogee...

Doug

I figured the first charge would at least shear the pins and in case it didn't completely separate the back-up would push it apart. Wrong, both charges went, shear pins sheared and it still stayed together. Fortunately the nose separated at apogee so the main deployed then.

See, simultaneous ignition of charges can occur, though rare. IF that happens with my L3 attempt, the rocket will stay together. Doug, I'm using the blacksky as my primary electronics, and I've only flown them once, and they worked fine.

Next time I'm going with 6-32 shear pins for the nose cone and double the charges at apogee...

Glad you said that, that's what I'm using for the nosecone and main. And, I'm going to go the Con way and add a gram to each redundant charge. Booster 4-5 grams, and main 6-7 grams. Because I'm using the WRC2, the only way I'll have both charges going off is if I panic and push a button at the wrong time.

are you using only 2 charges and a match for each and then another mach to the same charges from the WRC or do you have a charge just for the WRC? I was under the impression you had 3 charges.

are you using only 2 charges and a match for each and then another mach to the same charges from the WRC or do you have a charge just for the WRC? I was under the impression you had 3 charges.

Four, primary has one each for the drogue and main, as does the redundant (WRC2). Nothing in parallel. If there's something wrong with a charge (e-match), I thought it might be better to use a separate canister for each. Is that okay?

So 2 drogue and 2 main and then 1 WRC apogee charge and 1 WRC charge for the main chute.

So 2 drogue and 2 main and then 1 WRC apogee charge and 1 WRC charge for the main chute.

Just 1 drogue and 1 main charge for each of the primary and redundant electronics, for a total of four charges. The two electronics have separate charges. The redundant ones will have that extra gram. And for the record, I will test each e-match for continuity before I use them. I'm wiring it up this week, and I can change it. Let me know.

Bruce how many altimeters are you using for deployment. (NOT including the WRC) then how many e matches per each event from those altimeters? as well as How many charges per those events on those altimeters. (again not including the WRC) then does the WRC have its own match and charge for its events?

Is there just 1 altimeter for the primary and the only redundant you have is the WRC? Or is there another Redundant actual altimeter?

Exaample would be like what I did. I had a RRC2X and it had 1 match per event and one charge per event. Then I had an ARTS and it had 1 match per event and one charge per event. If I were to use a WRC on top of that I would have done even 1 more match per event and one last charge for just the WRC per event.

Exaample would be like what I did. I had a RRC2X and it had 1 match per event and one charge per event. Then I had an ARTS and it had 1 match per event and one charge per event. If I were to use a WRC on top of that I would have done even 1 more match per event and one last charge for just the WRC per event.

Only one accelerometer/altimeter (backsky) as the primary for ap and main; the WRC2 is the sole redundant system for ap and main. Each with one charge for each event. I can add another altimeter and parallel it with the primary charges. But is triple protection necessary? Wish my RRC2X hadn't gone belly up; I can use my little miniAlt PerfectFlite, though I haven't used that one yet. I'll just have to see what James recommends. Thanks for your input, and keep it up.