Drivetrain Help

[Joe Johnson]

Paul,

I don't see how the planetary gear set up you describe can give you what you are claiming it gives you.

Here is my dilemna. One of the chief benefits from my point of view of a CVT is that for a given speed & torque of the output shaft, I can pick a ratio and voltage that will essentially have my motor running at some desired point on its speed torque curve (for that voltage). For example, I can choose to run my motor at its peak efficiency point or at it peak power point. The key idea is that I can always choose a ratio and a voltage that will keep my motor running at this desired point, regardless of what the speed and load conditions are on my output shart (within the bounds of my CVT ratio of course).

I don't see how this is done for the case you describe.

I am willing to be impressed when I see it work.

Joe J.