ChrisAttebery
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- Joined
- Feb 15, 2014
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No, it's on the bulkhead. Usually the chute in the deployment bag will pull right out of the cone when you pull in the shock cord.
No, it's on the bulkhead. Usually the chute in the deployment bag will pull right out of the cone when you pull in the shock cord.
Yeah, I was iffy on this in a number of nosecone only deployments (note, not all head end), but have moved to always putting charge opposite of opening. Haven't had problems since.
My plan was to pull the loose fins off the booster, sand the epoxy off the fins and the booster and then reattach the fins. Well, I tried pulling the fins off the booster last night. They are loose but I couldn't get them to pull more than 1/16" away from their original locations. I looked inside the MMT and it looks like the fillets are still attached to the fins. Any suggestions? Maybe heat?
If you can inject epoxy where you need it just re-epoxy them. Or foam fill the can. I wouldn't heat the fins. Before the fillets fail the fins might suffer permanent damage.
Can you get the fins out by slotting the body tube to the aft end?
Injecting more epoxy was my backup plan. There's no way to slot the tube because the thrust plate/motor retainer is in the way. I'll have to find some thinner epoxy. At the moment all I have is Rocketpoxy and BSI 30 minute. I don't think I can get the Rocketpoxy to flow into the gap at the root of the fin and I wouldn't trust the BSI stuff. I think rebuilding this booster is going to be more work than it was to build it in the first place. :sigh:
Unfortunately, I have considerable experience with this scenario.
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In any case Chris.....shame about all the bad luck ya been having.
Next flight, do the rocket godz dance around the pad & kiss the rocket goodbye. This will guarantee successful flight!:smile:
Thanks CJ.
I've put all of this energy into engineering the crap out of everything for this project and I've had all kinds of problems. It's been frustrating at times but I'm learning from it.
How did your flight video turn out Chris? I hope you camera did ok... I suppose that after the booster landed, the camera/payload section slowed down just before landing under drogue?
The videos from your on-board sony setup are excellent.
Some of you have commented that my rockets always fly very straight with almost no roll. I think it's because of the jig I use to mount them. I made this a couple years ago. I clamp a piece of scrap the same thickness as the fins between the halves of the jig.
View attachment 320906
Curious, what launch is next weekend? Wondering what I'm forgetting about.
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