For the retainer, all you need is that hex standoff, screw, and washer. Why add the time, money, and drag to make the triple-ring thingie? Other than it's fun to design and mill!
Looks spiffy.
Be careful with all the modifications and additions. You are adding extra weight and potentially changing the CG of the stock rocket.
I'm not sure I understand the suggestion.You can add a short body tube of same tube spec diameters of cluster tubes probably and override mass of short body tubes to actual retainer mass. That’s what I did with a Fastback54 retainer on a L2 build for OR but that retainer was really heavy.
Ok - I had an idea and it will not make everyone happy or excited..
Let me explain what i mean...
- The rocket use a cluster of 3 motors
- So there are 3 ejection charges
- I'd like to channel only one charge to the top for ejection
- Then channel the other two to the sides
- At ejection i'll see 2 side explosions and an ejection
Please.. don't "hate" ..
Ah... You mean the one do not light at first. That's my bad English kicking in...Isn't the case for all single motor rocket?
See my post just above [emoji1787]If the motor in a single-motor rocket does not light, then the rocket does not go up, and therefore will also not come down, ballistic or otherwise.
This is a unique characteristic of cluster rockets.
[never mind, seems you got it on your own.]
I think there's much more to be lost than gained by doing it.Good advice.. Might not be a so great ideas.
It does make sense and I'm happy I've dropped the idea here before doing it. [emoji106]I think there's much more to be lost than gained by doing it.
I haven't done much cluster flying, but just from hanging out here I can see that a lot of consideration goes into accommodating failed ignitions, where less than the full number of motors starts. There are a lot of "interesting" failure modes and consequences. In general, if you have a rocket that is likely to fail catastrophically if any one motor doesn't light, then you should change your plans.
Well - Because i'm a lot better with a CNC than with my own hands (lol). One still need to glue a matching standoff in the middle and even a 3/16" do not fit and it look so much better (my taste.. ).
Here is the finish result.. False carbon fiber only top and bottom layers but the core is glass fiber, the material was laying around..
Ok - I had an idea and it will not make everyone happy or excited..
Let me explain what i mean...
- The rocket use a cluster of 3 motors
- So there are 3 ejection charges
- I'd like to channel only one charge to the top for ejection
- Then channel the other two to the sides
- At ejection i'll see 2 side explosions and an ejection
Please.. don't "hate" ..
I just run with all three ejection charges. Redundant backup if one motor fails to light. Also not uncommon for the charges to pop a split second apart from each other. So overpressurization of the main motor tube is mitigated. I haven't had a tube split from the ejection charges yet.
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