Fan spinning?

Ok so if you've seen my fourm you'll notice that ive been working on a prerunner. On the prerunner, i got 2 fans sittin in the back but they are stationairy and do not move.

My main question - how do you make fans spin? I've tried to make them as a shaft but then they dont end up spinning full time.

Any help?

The code has changed some since this video but it's skinned the same.

Youtube Video

last edited by Tattoo

What is the code for it?? Ive got it skinned but im not sure at all what the code is

@riskywisky i believe it's rotator or something like that, it was in the tutorial I believe.