Railpictures.ca - Michael Berry Photo: King of the MLW’s CP 4744 was the only M640 ever produced and the most powerful diesel ever produced by MLW thanks to its 18 Cylinder 251F engine which produced 4,000 horsepower. It was converted from C-C to A1A-A1A trucks during the 1980s when it became an AC test bed with technology from ABB, thus becoming an important precedent to the current dominance of AC traction motors on North American freight diesels. For more train photos, check out http://www.flickr.com/photos/mtlwestrailfan/ | Railpictures.ca – Canadian Railway Photography

King of the MLW's CP 4744 was the only M640 ever produced and the most powerful diesel ever produced by MLW thanks to its 18 Cylinder 251F engine which produced 4,000 horsepower. It was converted from C-C to A1A-A1A trucks during the 1980s when it became an AC test bed with technology from ABB, thus becoming an important precedent to the current dominance of AC traction motors on North American freight diesels. For more train photos, check out http://www.flickr.com/photos/mtlwestrailfan/

Caption: King of the MLW's CP 4744 was the only M640 ever produced and the most powerful diesel ever produced by MLW thanks to its 18 Cylinder 251F engine which produced 4,000 horsepower. It was converted from C-C to A1A-A1A trucks during the 1980s when it became an AC test bed with technology from ABB, thus becoming an important precedent to the current dominance of AC traction motors on North American freight diesels. For more train photos, check out http://www.flickr.com/photos/mtlwestrailfan/

Photographer:	Michael Berry [4080] (more) (contact)
Date:	12/08/2013 (search)
Railway:	Canadian Pacific (search)
Reporting Marks:	CP 4744 (search)
Train Symbol:	Not Provided
Subdivision/SNS:	Exporail (search)
City/Town:	St-Constant (search)
Province:	Quebec (search)
Share Link:	http://www.railpictures.ca/?attachment_id=12867

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Photo ID: 11847

Map courtesy of Open Street Map

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One Comment

RonaldB

March 11, 2021 at 11:55 pm

I have been pouring through my old time books, and I see that I worked with this unit about 10 times early in my CP career, in 7 of them it was the leader. Many London guys used to call this unit “The Flying Nun” a reference to the 70s TV show & the large radiators at the back of the engine.

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RonaldB

March 11, 2021 at 11:55 pm

I have been pouring through my old time books, and I see that I worked with this unit about 10 times early in my CP career, in 7 of them it was the leader. Many London guys used to call this unit “The Flying Nun” a reference to the 70s TV show & the large radiators at the back of the engine.