05-04-2016, 04:27 AM
Have a look here especially the section regarding diesel and electric locomotives and it will explain how weight factors in pulling ability.
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Hope this helps,
Cheers, the Bear.
<!-- m --><a class="postlink" href="https://en.wikipedia.org/wiki/Tractive_force#Diesel_and_electric_locomotives">https://en.wikipedia.org/wiki/Tractive_ ... ocomotives</a><!-- m -->
Hope this helps,
Cheers, the Bear.
"One difference between pessimists and optimists is that while pessimists are more often right, optimists have far more fun."