« on: 15/09/2018 15:22:21 »
what is a flywheel? a massive wheel that store kinetic energy for short periods . if it is under ideal conditions it will last for long periods , but if it powers anything it will last very short periods.In principle an object in vacuum could rotate forever, but in practice when there is friction and the energy is in fact consumed as the example of the gyrobus it is not more than 6 km , 50 km/h and 7.2 minutesYou seem not to understand that the flywheel takes 7 minutes to slow down because it is powering a bus and if it was not, then, as has been pointed out, it would carry on spinning for hours.
In fact as an engineering fact even 7.2 minutes achieved only if it used for a vehicle . ask yourself why it is just a bus that is run by a flywheel ? why not a generator ? and ask yourself why it is just 7.2 minutes ? why not more ?