Question

 When do you use two locomotives in the front of the train and when one in the front and one in the back?

Answer There is only so much tonnage that a coupler can handle before it, or the draw bar it fits into, literally gets ripped in two. This amount of force increases when in grade territory as gravity add... Read More »
http://answers.yahoo.com/question/index?qid=20070730150810AAxhBIx

Top Q&A For: When do you use two locomotives in the front of...

Do you prefer DEDs front-to-front, front-to-back, or back-to-back?

Does an NYC MTA train turn around at the end or does it have two driving head at the front and the back?

Good question. And everyone is right the Subway trains can move back and forth but they do not have dual driving heads but each car has it own motors at each axle. And not all but alot of NYC line... Read More »
http://answers.yahoo.com/question/index?qid=20070202184057AALIiJb

Should the needle be threaded back to front or front to back?

it really doesn't matter, as long as you get it threaded!
http://wiki.answers.com/Q/Should_the_needle_be_threaded_back_to_front_or_front_to_back

Is it best to wipe from back to front or front to back?

It really only depends if you're a chick.
http://answers.yahoo.com//question/index?qid=20060926154759AA7SxOF


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