RocketEd Rocket adapted to C6-5

thingiverse

First of all thanks go out to Rockeded for the nice design. As it was stated that this one is not designed for C-series motors, I decided to adapt it a bit. For this, I had to make the prop-base a bit longer. I also introduced a little ring to strengthen the top part of the prop base, as I wasn't sure if this part would survive the blast from the parachute. I decided to do this quite late in the process, which is why I didn't design the ring into the prop-base right away. This one slides on and needs a few drops of acetone to glue. I also redesigned the part that glides on the starting rod. The original wouldn't slice properly, as the walls were too thin. Anyway, I wanted to have it 4mm inner diameter, so now you have an all new 4mm tube attached, which slides nicely. When I simulated the rocket, I found out that with the C6-5 it might be unstable (the C6-5 is a bit heavier than the B's). So, I needed to introduce a weight in the top of the cone. To do so, I rebuilt the hollow part of the cone (nasen-innenteil.stl), which I used to build a negative form out of gypsum to produce a weight made of lead that exactly fits inside the cone and is located at the topmost point. Mine weighed 4.6 grams plus a LEGO 3-gram Stormtrooper in the cone (I didn't want it to fly completely unmanned). Both together make the rocket perfectly stable. The other parts you can directly take from the original; I didn't modify them at all. Oh, and as already mentioned: instead of the recommended streamer, I used a 30cm parachute which worked perfectly. I wasn't able to measure the flight altitude directly, but from some geometrical measurements I saw that there was a good correlation with the simulation, which makes me believe that the rocket reached about 365m as simulated. And before you ask - yes, I made sure beforehand that I was allowed to start under these conditions.