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By John Erickson

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ST-BM Eng. 690 Pictures from John Erickson

Engine Details
Number Marks Current Disposition Eng. Serial No. Eng. Built: Date Acquired:
690 B&M Active 34883 5/1969 1985
Eng. Type: Engine Maker: Trucks: Horsepower: Weight: Engine:
SD39 EMD 6-Wheel C-C 2300 360,000 lbs 645E3 12 cylinder
Bore & Stroke: Fuel Capacity: Truck Wheel Base: Tractive Effort (starting): Gear Ratio: Speed:
8.5" X 10" 3200 13'-07" 90,000 lbs @25% 59:15 95 mph


All diesel engine data is usually from The Diesel Shop with inclusions from Wikipedia where the information on The Diesel Shop was spotty. Former Maine Central Locomotives are checked against Maine Central Diesel Locomotives Revised Edition by Edwin B. Robertson.