Then it might be easier to do a shuttle piece. Basically, a mesh object that has a follow path constraint on it. There are 2 things that need to be check. Something like follow and curve radius. Sorry, I don’t remember the exact wording. By checking those the mesh will deform around the curves of the curve. use it to create the light and tail. then you can parent the cylinder to the shuttle piece. I’d recommend checking fixed position as well. That allows you to keyframe the constraints offset. 0 will be the start of the curve and 1 will be the end of the curve. If you don’t check this it will use the animation path settings of the curve, which by default is 100 frames. 0 being the beginning of the curve and 100 being the end. You can still keyframe the constraint. If it doesn’t move, then you will need to click the animate path button. Note: I don’t know the technical term for this. I used it once to create an effect of data moving along a cable. We started calling it a shuttle piece, because without the textures it looked like a shuttle riding along the tube.
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