Just out of idle curiosity that GE AC6000CW has a starting tractive effort at 188000 lbs while weighing at 423000 lbs, ES44AC has TE of 183000 lbs weighing at 432000 lbs, SD90MAC-H has TE of 200000 lbs weighing at only 415000 lbs.
What design factors contributes most to the maximum tractive efforts? Is it the traction motors or the truck design or software? Can we really trust the EMD SD90 has such a significant TE advantage over the GE counter parts while weighing less? I always thought GE being the electric component builder by pedigree has the better traction motors and electrical gears than EMD, why then does EMD seem to have an advantage in the starting tractive effort?
What design factors contributes most to the maximum tractive efforts? Is it the traction motors or the truck design or software? Can we really trust the EMD SD90 has such a significant TE advantage over the GE counter parts while weighing less? I always thought GE being the electric component builder by pedigree has the better traction motors and electrical gears than EMD, why then does EMD seem to have an advantage in the starting tractive effort?