David Maynard said:Devon Sinsley said:
Trains magazine (investigative reporting, you be the judge?) http://trn.trains.com/railroads/abcs-of-railroading/2006/05/booster-units
From here we see that "booster" locomotives include both B units and calves. Both powered with prime movers and controlled from the cab model it is paired with. This was my understanding. Slugs are non powered with prime movers.
Nudge to John if we can agree that the folks at Trains have anything to say about it.
Ah, slugs get their electrical power from the the A unit, they do not have prime movers.
John Bouck said:
Devon, Calves and B units do have prime movers and traction motors. They are controlled by the attached locomotive. And with remote controls, can move by themselves. Slugs do not have prime movers and cannot move unless they are connected to a locomotive equipped with a prime mover.
Well John....that's mostly true. But a friend of mine told me about an occasion when they came back from lunch to find that the slug was gone. Here they found it 2 miles down the track. It seams the track had a slight grade to it, and the slug just kinda....wandered off.
But that's only true if you speak to a non Burlington Northern rail. Otherwise, its the opposite... I always knew that I liked the BN for some weird reason...