Model_rockets
Active Member
- Joined
- Mar 31, 2022
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Just a little post on the build and flight of a submin j270 I flew at Mini Midwest Power. This just started out as a bad idea and after a friend said I could have his j270 for cheap I was ready to go. being a Jr L1 it was a lot to take on but over about a year of on-and-off work, I was able to get it done. first is the sim. After roughing out that and making a rough cad model I was ready to start making parts. I started by drilling and tapping the forward closure on the motor. after that I got some fins cut from Wildman. Then I did three layups for the Nosecone, coupler, and body tube. I don't have any photos of that sorry but this is what they look like after some sanding. Then I started work on the Av bay which was just a flat sled with a hole in the middle. The av bay is the main thing I would change if I were to do this again I would have used the threaded rod to hold in place the coupler and place the nosecone over that and remove the body tube. but you live you learn. Then I tacked on the fins with extra control super glue. ( I really like this stuff as it gives a few more seconds than normal to get everything perfect. Then came fillets. sadly well drying it fell and all of these had to be redone . but in the end, I am happy with how they turned out. So with the rocket ready to go for the most part, I needed a tower. I will most likely make another thread for this as for smaller rockets this is by far the cheapest I have seen it done and a lot of people like it. So the plan was to launch this at Midwest power however due to weather and some wires I was unable to do that and so it was pushed back to Mini Midwest Power. so on the day of the launch, I was very nervous but ready to launch. I wired it all up and packed up my custom Trans tie dye chute that a friend made for me and got ready to go and put it in the tower. Then after so much work and a lot of stress, we had lift off. After quickly jumping my car. we got it back. in the end, the rocket named Zoom zoom did 12339ft and well over mach one. Overall I am very very proud of this flight and it is my highest to date. plan to go to 35k at balls but we will see.
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j270 screenshot.jpg195.8 KB · Views: 0
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j270 cad model.jpg38.4 KB · Views: 0
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Untitled video - Made with Clipchamp.mp447 MB