[MrForbes]

The wording can be confusing...you don't gain power by lightening parts. But you do change where the power goes, so instead of using that power to increase the rotational speed of the rotating parts, you are using it to accelerate the car forward.

We are saying the same thing, but it might be wise to be very careful with the wording, so that peope who don't yet understand the concept, don't get confused further....go back to the original post in the thread, and let's see if we can explain it in a way that sporno can learn what he wanted to know. When we talk about "losing power" or "gaining power", people normally understand it to mean that the power appears or disappears somehow, not that it is being stored as kinetic energy in some part of the drivetrain.