Here is a fan with animation for Blenders Game Engine.
Layer 1- Grouped objects.
Layer 10- The fan components.
Layer 20- Bake-settup for baking some seamless grid textures.
I thought this could be interesting, so I have not cleared this layer.
https://www.youtube.com/watch?v=5-ADSn4AmHw
did I ever say how much you amaze me DennisH2010