Rapido 50217 HO Scale EMD SD9 Diesel Baltimore & Ohio B&O 771 Construction Equip. and era specific™ details

and era specific™ details

only five months after the design was initiated

When the N&W ceased their mainline steam operations in 1959

and detailed model kit

Rapido 50217 HO Scale EMD SD9 Diesel Baltimore & Ohio B&O 771 Construction Equip. and era specific™ detailsRapido 50217 HO Scale EMD SD9 Diesel Baltimore & Ohio B&O 771 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 were built for 17