Nantucketdink
Well-Known Member
- Joined
- Oct 1, 2014
- Messages
- 63
- Reaction score
- 1
I launched my first 29mm motor ever yesterday with bad unexpected results. I scratch built a 29mm rocket and loaded it up with a G80-10 for it's launch. I was using a Quest plastic fin cam and was also using a Quest plastic nose cone so the rocket wouldn't shred. The rocket went up maybe 300 feet and started skywriting all over the place before returning to the ground. I could see that the nose cone had come off and the chute had stripped off in the air. The ejection charge went off on the ground. There was a wicked zipper to the body tube but everything other than the chute survived just fine. I just studied up on what might have happened and it must be that I didn't put a pressure relief hole in the body tube. The nose cone was nice and loose like I like for smaller type motor rockets. Does everybody use pressure relief holes for bigger motors? How did I miss this info? Do I need my nosecones to fit way tighter on 29mm and above (eventually) motors? I have another bigger project I don't want to attempt to launch unless I am confident it is fairly safe.