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Notches and Speed
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tree68 <br /> <br />On the railroad I work for each train has a horsepower to ton ratio that they would ideally have. On our bulk trains or most non manifest trains it is based on the minimum horsepower to get over the ascending grade that train will go over.The fast freights or differrent symbol trains carry a hp to ton ratio that the company deems fit to maintain a reasonable time schedule. More often than not this is seldom met because of power shortages. Where I work once you get up the hill you can haul 9200 tons with 1 GE AC4400 for a total of 135 miles and the next subdivision they could even put on more tonnage. If the wind is blowing I have gone the whole trip without leaving throttle 8 except for train meets. The average time for a non stop train of this kind would be close to six hours. Likewise on coal empties you can put it in throttle 8 the whole trip because of the wind drag. Pretty slow at times and you wonder will the trip ever end:) <br />The railroad tries to distribute power to be used in the most efficient way or to get the maximun use from it. You get good fuel econnomy at the expense of speed. <br /> <br />Brent <br /> <br />Brent
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