 The gyroscope wheel itself weighed spun by a 210-horsepower Diesel-electric motor at 13,000 revolutions a minute and taking one and a half hours to reach that maximum speed.The device was designed to counter five and a half degrees of roll.The total weight of the two engines and gyroscope was approximately  Two 150-kilowatt and one 50-kilowatt diesel–electric generating sets provided electrical power.