Manuals you'll miss in 2019...

[Rope-Pusher]

The difference is that the performance/efficiency tradeoff for saving the cost, weight, and complexity of a multispeed transmission with an ICE is crippling (so much so that the Model T was a two-speed), while the performance/efficiency benefit of adding the cost, weight, and complexity of a multispeed transmission to an electric drive system is comparatively small.

This company thinks they can generate savings on right-sizing the electric motor and batteries with their 2-Speed trans for electric vehicles.

In the article there is a link to an animation that shows shifts being accomplished under load.

https://www.sae.org/news/2021/02/inmoti ... efficiency

I would think that a CVT would be the way to go with an electric vehicle no?

I don't think they're trying to keep the electric motor running in its "Sweet Spot", since it has a fairly broad operating range, but more to offer a low range for starting up a grade with a heavy load and then a cruising range for high-speed driving while avoiding relatively high motor rpms.

[IMBoring25]

A CVT is used to deal with a power source with a narrow powerband and is best used in low-torque applications. Both of those things are the opposite of what you get with an electric motor.

[ClutchFork]

I see, but this image suggests there is some limitation on power band, but certainly a broad power band: