BACHMANN BNSF ( HERITAGE III) #1734 EMDSD40-2 LOCO W/DCC, HO SCALEEMD SD40 2 BNSF (HERITAGE III) #1734 Model: 60916 Shipping Weight: 1. 7lbs Scale: HO 1: 87 EMD SD40 2 Diesel Locomotive BNSF #1734 HO Scale. The SD40 2 was one of EMD's best selling locomotives, with nearly 4,000 units delivered to more than 30 railroads between 1972 and 1989. Today, the vast majority remain in operation, many with their original owners (or their successor railroads), and examples can be found both across North America, and on