On 4/6/14 13:03 : , Steve Troy wrote:
> ----- Original Message -----
> From: "Chris Barker" <ftog@xxxxxxxxxxxxxx>
>
> Thanks, Steve, but it doesn't describe the method of synchronising the power,
> only centralising the control (which is neat, I grant you).
>
>
> The following might be more clear:
>
> There's a signal line that connects all the locomotives, called an "M.U.
> jumper". M.U. stands for multiple-unit, and it goes back to the days of the
> interurban streetcar.
>
> So yes, if you have a big 6000 horsepower mainline diesel and also a tiny
> 1000 horsepower switcher, they absolutely can M.U. and they can push the
> train together for a total of 7000 horsepower. They don't have to be equal,
> they just have to push in the same direction, lol!
>
> There's some fairly tricky wiring in the M.U. cables to make sure the
> locomotives push in the same direction. Modern diesel locomotives have I
> believe 21-pin M.U. cables, which include several pins for sorting out
> headlight controls.
What he said. Much more detailed that my explanation. Thanks, Steve!
--
Paul Braun
Certified Music Junkie
Valparaiso, IN
"It's such a fine line between stupid, and clever." - David St. Hubbins
"Music washes from the soul the dust of everyday life" - Harlan Howard
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|