User blog comment:O Raz3r O/Did Series 7 really have an issue with Flippers?/@comment-24393094-20171015150117/@comment-25109076-20171015205837

By my count, there were at least 40 spinners in Series 7, not including robots who had rear end spinners that did nothing (Rhino, Hodaf the Bad and Mighty Mouse). Only 12 of them got to round 2, and just 4 reached the heat final.