First Video: https://www.youtube.com/watch?v=I2xuipZyi8M
Second Video: https://www.youtube.com/watch?v=821tFCNPC48
Made a rocket for the Cineroc, flies on 24mm motors. 3D printed the following fin can upscaled to fit a BT-60. https://www.thingiverse.com/thing:3829871/files