Hello! I see that you have the same problem as I when I wanted to create animations on armor. Problem is that weighted object do not support textured animations, only thing I could do with weighted items is just to turn on and off glowmaps, like here for what I used flame atronach that has on/off part but extremely fast, but I slowed it down. I am sorry, I am still looking for the way to do it. Helmets and Shields like any other BIPED object can be "animated" but I do not know how to animate weighted objects.