How big are they? (Page 1/1) maryjane MAY 05, 08:43 AM 'Windmill' turbine blades on flatcar(s) moving to West Texas.. I caught these on cell phone cam a few days ago on the train track that runs near my home. 10 blades and 2 locomotives that made up the entire train. Enough for 3 'windmills' with 1 spare blade. 1 blade covers all or parts of 3 flatcars.