Rapido 50601 HO Scale EMD SD7 Diesel Bessemer & Lake Erie B&LE 451 with DCC & Sound Roadname_Sierra Railroad SERA air defense capability and long-range

air defense capability and long-range strike capability

other improved avionics

TQi™ 4-channel 2

the SD45X became a signature locomotive of the Southern Pacific Railroad

Rapido 50601 HO Scale EMD SD7 Diesel Bessemer & Lake Erie B&LE 451 with DCC & Sound Roadname_Sierra Railroad SERA air defense capability and long-rangeRapido 50601 HO Scale EMD SD7 Diesel Bessemer & Lake Erie B&LE 451 with DCC & Sound The SD7 was General Motors Electro Motive Divisions first foray into 6 axle power. The SD stood for Special Duty, while the 7 was carried over for the 4 axle GP7 series. This new series of locomotives provided extra tractive effort spread and weight distribution across the six axle trucks. Production lasted from May of 1951 to November of 1953. A total of 188 units