White Paper Discuss: Dual-motor, dual-speed drive transmission design

[dlavery]

The design we developed, like the TeknoKat design, actually prefers shifting on-the-fly over shifting while stopped. One of the things that makes this possible is the chamfering on the tips of the teeth of the shifting gears, which tends to guide the teeth into a proper meshing configuration as the shifting gear moves (we were also careful to break any sharp corners on the edges of the entire tooth with a needle file, to further reduce the chance of binding).

If you were designing a transmission that was going to see hundreds of thousands, or even millions, of operational cycles, then you wouldn't do it this way. But given that this system is probably only going to see a few hundred shifts at the most, the abuse heaped on the gears with this design should not be too much of an issue.

-dave