Weird results for RFORCE

Hi,

I'm applying RFORCE to a propeller but the deformation looks odd. 

I have define a point in the center and se X as the rotation vector, set 730 in A (which I believe correspond with 730 rev/s using my units, I know it's extreme but its just a value for testing), and I have created a set with all the elements of the propeller. The root of the blade is not coo-linear with the center of mass of blade in radial direction so I expect some displacement in X direction but not this much. 

Can someone tell me what is wrong?