As far as I understand them, dog teeth spin the next cog at the same speed as the one currently transferring the drive, so instant clutch-less shifting is possible.

In my mind, this works fine with a sequential box, but I don't understand how it could work for a standard H-pattern box.

If anyone could clear this up, I'd be grateful

On a similar note, has anyone heard of Tranex gearboxes?

Thanks,

Ralph.