Rapido 50224 HO Scale EMD SD9 Diesel Burlington CB&Q 837 WMSR 30% Overdrive

30% Overdrive

this motor can deliver more aggressive launches

Gripping the trail are a set of officially licensed General GrabberTM A/T X tires

Appearances notwithstanding

Revo’s massive power

Rapido 50224 HO Scale EMD SD9 Diesel Burlington CB&Q 837 WMSR 30% OverdriveRapido 50224 HO Scale EMD SD9 Diesel Burlington CB&Q 837 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 railroads,