Basically what I'm thinking
The turret idea has been done quite a few times. The best example is probably [link|http://www.battlebots.com/meet_the_robots/meet_robot_specs.asp?id=85|Ziggo]. Most of the spinners have a frame that drives like a typical bot, with a spinning turret mounted on top. This means that the inertia of the weapon is only what you have in the turret.
The other type of spinner is seen in [link|http://www.battlebots.com/meet_the_robots/meet_robot_specs.asp?id=337|Carnage Raptor], where the entire bot spins, putting the most inertia to work for the weapon. The problem these bots have is lack of maneuverability.
I'm trying to get the massive inertia of a fully-spinning bot, but have at least enough maneuverability to be able to attack. "Pulsed brake" is a pretty good way of describing what I came up with.
