Repulsors

Repulsors are an advanced form of maneuvering thrusters used for propulsion.

Overview
Commonly used by The Aliens, repulsors provide fast, powerful and accurate maneuvering capabilities. They work by warping space ever so slightly causing the ship to move. This is the only type of maneuvering propulsion that is bidirectional using only one thrusters. They need a substantial amount of power and is very efficient. They are only use by Legoland on advanced ships. This is because they are quite costly and not necessary for smaller ships.

Users
Humans - Legoland and other human ships use these sometimes but they are very costly ad so are only seen on advanced ships.

The Aliens - Most of the aliens ships have these fitted onto them. It is unknown why they need that level of accuracy and power for small ships.

Hackabots - Individual Hackabots use this to travel around.

Trivia

 * Based on the Warp Drive
 * They are the best form of maneuvering

Current Status
Quite advanced and sometimes seen by powerful races. Legoland still does not really use them as Ion thrusters provide a good enough for of maneuvering.