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By John Erickson

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Engine Details
Number Marks Current Disposition Eng. Serial No. Eng. Built: Eng. Rebuilt:
100 B&M Scrapped 1954-59 1983
Eng. Type: Engine Maker: Trucks: Horsepower: Weight: Engine:
GP9 Slug BM Rebuild 4-Wheel B-B 0 249,000 lbs
Data Assumptions: Truck Wheel Base: Tractive Effort (starting): Gear Ratio: Speed:
This data assumes that all the capacity of a GP9 is still available 9'-00" 62,750 lbs @25% 62:15 65 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.

This unit did not prove satisfactory enough for copying because the power drawn from one of the other locomotives could only supply half enough power for this unit. That meant that if one locomotive went down the slug unit went down as well and you were running at 1/3rd the tractive effort. If multiple sets had been done then another GP40 could be connected up, but they did not do multiple sets.