Rapido 50617 HO Scale EMD SD9 Diesel Baltimore & Ohio B&O 771 with DCC & Sound Cornith Cowlitz CLC Other details are smaller and

Other details are smaller and takes a careful eye to see

Early (short forward taper) standard-range dynamic brakes with retrofitted cooling vents

and terrain to provide predictable handling at every speed

Highly detailed Barber S-2 70-ton trucks with 33” wheels at ends

700 kg) for an F3 with the same gearing

Rapido 50617 HO Scale EMD SD9 Diesel Baltimore & Ohio B&O 771 with DCC & Sound Cornith Cowlitz CLC Other details are smaller andRapido 50617 HO Scale EMD SD9 Diesel Baltimore & Ohio B&O 771 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 were