Hillhater wrote:There are several threads on multi ratio /CV friction drives if you keep searching, but one conclusion was that you really do not need a cv/multi ratio drive with electric power. Just 2-3 well chosen ratios works well for efficient power use.
I indeed remember that and though just two or three ratios can do well, some reasons why I want to avoid doing it with a gearbox with selectable ratios is the complexity, like with the idea of reversing the motor to switch gears, and the smoothness of the CVT, especially, for example, when going from drive to braking. Say I'm going along at 15mph and begin to descend a dangerous hill, the ratio can be adjusted to very high gearing and then the throttle let off, going from propulsion to drag, but since the ratio is at a high setting, the drag is not too much and the 15mph can be maintained. Other times it can just do the job of the brake generally.
I think some smart folks out there are probably capable of doing it simply and effectively, so I wanted to bring up the topic again, even if those folks don't usually post messages.
I've now added the belt between the pulleys in that drawing I've edited in the first post.
... I suspect he is aware of NuVinchi...