crazy_nip wrote:csx isnt getting rid of its sd50'sNot all of the ex Conrail units were dumped. Only the SD50's from the second two orders (CR 6780-6834) were returned to the lessor. The SD50's from the first two orders (CR 6700-6779), a total of 80 units remain on both CSX and NS.
the only ones off the roster are some of the ex-conrail junk that was up for lease renewall and the renewall terms were terrible, so they were returned as their leases expired
Engineer Spike wrote:Tractive effort is needed to get the train moving. If you had a SD 38, 39, 40, or 45, each balasted the same, with the same wheel slip system, they would start the same train. The 45 would be able to go faster. I have noticed that sd40s seem to be slow to accelerate over 40 mph. The 45 will still accelerate faster at high speeds.Didn't EMD actually market the SD45 and SD45-2 for piggyback service?
The 45 was designed to be able to replace sets of f units an geeps. This implies general freight service. Later on the western roads like BN got coal trains. They likely did not need the extra speed. A 40 would do for anything. 600 hp is not much. The cost was also a factor. Like the others posted, the high speed intermodal lines liked them, and kept them.