SD70MAC Question

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4 replies

bb4884

Member since
July 2006
From: Colorful Colorado
191 posts

SD70MAC Question

Posted by bb4884 on Saturday, June 9, 2007 3:18 PM

How many tons can a single unit pull on strait and level track?

rrboomer

Member since
December 2001
400 posts

Posted by rrboomer on Saturday, June 9, 2007 8:25 PM

At least 13,876 tons.

CSSHEGEWISCH

Member since
March 2016
From: Burbank IL (near Clearing)
13,540 posts

Posted by CSSHEGEWISCH on Sunday, June 10, 2007 10:20 AM

rrboomer wrote:
At least 13,876 tons.

but not much faster than a walk.

The daily commute is part of everyday life but I get two rides a day out of it. Paul

trainfan1221

Member since
July 2003
From: Elmwood Park, NJ
2,385 posts

Posted by trainfan1221 on Monday, June 11, 2007 6:15 PM

According to a book I have, most locomotives, it used a GP40 for an example, can pull that. Yeah it won't be fast, and the main thing is it has to be able to start it first.

bb4884

Member since
July 2006
From: Colorful Colorado
191 posts

Posted by bb4884 on Tuesday, June 12, 2007 8:21 PM

While diging for info I found out tests at the Transportation Test Center at Pueblo, Colo., indicated what the SD70MAC could do. A single unit, working on a 1% grade and a 1.5-degree curve pulled (at 40% adhesion) and restarted (at 45% adhesion) a 7,000-ton train under various rail conditions that included continuous water spray, intermittent oil and soap application, and the heavy rain that occasionally hits Pueblo. On dry rail, one SD70MAC pulled (at 42% adhesion) and restarted (at 45% adhesion) a 7,600-ton train.