July 22, 2024
Description
The local 5 Below sells candy in these tubes that can be used as penny banks when empty. They could be used for that...OR...for model rockets!!!
This is one such rocket. This iteration is based around a 29mm motor tube. You'll need one of those tubes, some shock cord (I used Kevlar line) and a 26" parachute (I made mine out of table cloth material from the dollar store and kite string).
Print four of the fins, which are designed to go through the wall of the tailcone to glue directly to the motor tube.
I've provided A retainer and the male thread insert. Glue that male piece to the bottom of your motor tube, then glue that flush against the bottom of the boat tail section.
This rocket is designed for through the wall anchors for rail guides, but it's light enough that you could use the launch lugs found over on my Tootsie Roll Rocket (https://www.thingiverse.com/thing:6705518) to launch it from a thicker launch rod.
I've also included the openrocket file so you can model different motors and, as you build yours, adjust the weights of the different pieces. The weights in that file now are the ones from my build, so you have something you can compare with.
I left mine unpainted, but you could easily paint this however you wish.
Warning: The fins on this rocket are thin. If you're planning to use higher power motors on this rocket I would seriously consider laminating the fins in some way. I built mine with a 200mm motor mount which theoretically could accept an 168H87-12A 3 grain Cessaroni motor. But it sims to 527mph on that and I do NOT believe the fins would survive as I built mine.
This rocket flies on an E12-4 (not recommended) and an F23FJ-4 somewhere in the video below. The E-12 used a 29 to 24mm motor adapter which added weight that I think negatively affected the rockets performance.
License:
Creative Commons - Attribution - Share Alike