By before takeoff, I assume that means "during the takeoff roll" And I hope that also means "before V1". I know the DC 8 couldn't do it's elevator check until

By before takeoff, I assume that means "during the takeoff roll" And I hope that also means "before V1". I know the DC 8 couldn't do it's elevator check until it was moving quite fast, as there was no direct connection between the pilots controls and the elevator and it couldn't respond without airflow.