What is the advantage of spinning the gyro in a near vacuum?
Until the Seakeeper Gyro, air friction was the limiting factor on how fast the flywheel could be spun, driving up flywheel weight and power requirements. The Seakeeper Gyro spins three times faster than comparable products, cutting flywheel weight by two-thirds and halving power requirements. Moreover, because the critical components (flywheel bearings and motor) are sealed for life in a near vacuum containment, they are forever isolated from the marine environment. In addition, cooling requirements are less, both because there is less heat and it is easier to dissipate. For more details on this, see the Why Use a Vacuum section.
