Thanks, Paul. I hadn't considered that there were sensors in the right places.
Chris
On 6 Apr 14, at 18:24, Paul Braun <pbraun42@xxxxxxxxx> wrote:
> If the locos are all together, the MU cables are all connected. Since
> the locos are driven by electric traction motors in the trucks that get
> power from diesel-driven generators up in the body, there are simply
> speed/rotation sensors on the motors or the wheels that all speak back
> to the computer, along with electronic engine control for the diesel
> prime movers.
>
> If you've got a really long train with helpers in the middle and helpers
> on the end, they all transmit the speed/rotation data through radio links.
--
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