BN4052 cabless passes the BN computer heat sink in Denver, Colorado near Caboose Hobbies. I think we had a model thread on this unit earlier. Maybe there was more than one BN cabless like this? [ December 22, 2005, 08:59 AM: Message edited by: sapacif ]
These seemed to be really popular. But only for a brief time. Was there a shortcoming, that made them obsolete? Other than lack of a cab..... Boxcab E50
The first order of these units looked just like a GE without a cab. The second order had the dynamic brake grids moved to the roof section just behind and above the electrical cabinet. I believe the first body style was 4000-4052. The second style was 4053-4119.
I don't think these units ever did what was promised they would do. They were derated to 2300 hp at one time because of failures in the prime mover. They had a 12 cylinder engine in these units to try and reduce fuel consumption.
If I recall, the problem was that their traction mototrs wore out too fast. Too much power for only four axles at that tech level? But regular GP40s and B30-7s didn't have such a hard time... Maybe it had to do with them always being used as boosters for 6-axle units, like in the first picture?
I think part of the reasons B units didn't catch on (in general) is their lack of flexibility. You can't lead with 'em Harold
Harold, those B30-7A's were pretty short, so one of those in front of an SD40-2 couldn't have been any worse visibility-wise than a long-hood-forward NS unit!!!! Of course, they didn't have ditch lights, so that's probably why they couldn't lead.
Sounds as though there were accumulated shortcomings. Well, I'm betting someone will try the idea again. Some day..... Boxcab E50
Actually, Santa Fe already did try again. They bought 23 GP60B's. With the proliferation of 6-axle units, and the increased cost of locomotives in general, I doubt that this will be tried again. That is until they are satellite controlled and don't need seats.
