Drum bots

From Combat Robot

A drum bot has a weapon design that falls under the spinners category.

A drum bot has a horizontal rotating drum spinning at high speeds on the front in between two mounting forks protruding from the robot. The drum is typically a piece of metal tubing with endcaps that have bearings for the shaft. The drum has an array of teeth or bars to impact the opponent and fling them upward.It is common for the drum to be narrow and long, so when the robot gets flipped over it can still move with the drum spinning.