Irwin Car and Equipment

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Locomotive Tractive Effort Chart

Wt. Locomotive in tons 1 1/2 2 2 1/2 3 3 1/2 4 4 1/2 5 6 8 10 15 20
T.E. LBS. 750 1000 1250 1500 1750 2000 2250 2500 3000 4000 5000 7500 10000
 
Grade  
0% Gross Train Load 25 33.3 51.6 50 58.3 66.6 75 83.3 100 133 167 250.5 330
0% Trailing Load 23.5 31.3 49.1 47 54.8 62.6 70.5 78.3 94 125 157 235.5 310
 
1% Gross Train Load 15 20 25 30 35 40 45 50 60 80 100 150 200
1% Trailing Load 13.5 18 22.5 27 31.5 36 40.5 45 54 72 90 135 180
 
2% Gross Train Load 10.7 14.3 17.9 21.4 25 28.6 32.1 35.7 42.8 57.1 71.4 107 142.8
2% Trailing Load 9.2 12.3 15.4 18.4 21.5 24.6 27.6 30.7 36.8 49.1 61.4 92 122.8
 
3% Gross Train Load 8.3 11.1 13.9 16.7 19.5 22.2 25 27.8 33.3 44.4 55.5 83.3 111
3% Trailing Load 6.8 9.1 11.4 13.7 16 18.2 20.5 22.8 27.3 36.4 45.5 68.3 91
 
4% Gross Train Load 6.8 9.1 11.4 13.7 16 18.2 20.5 22.8 27.3 36.4 45.5 68.3 91
4% Trailing Load 5.3 7.1 8.9 10.6 12.4 14.2 16 17.7 21.3 28.4 35.5 53.3 71
 
5% Gross Train Load 5.7 7.7 9.6 11.5 13.5 15.4 17.3 19.2 23.1 30.8 38.5 57.7 77
5% Trailing Load 4.2 5.7 7.1 8.5 10 11.4 12.8 14.2 17.1 22.8 28.5 42.7 57
 
6% Gross Train Load 5 6.6 8.3 10 11.6 13.3 15 16.6 20 26.6 33.3 49.9 66.5
6% Trailing Load 3.5 4.6 5.8 7 8.1 9.3 10.5 11.6 14 18.6 23.3 34.9 46.5
 
7% Gross Train Load 4.4 5.9 7.3 8.8 10.3 11.7 13.2 14.7 17.6 23.5 29.4 44 58.8
7% Trailing Load 2.9 3.9 4.8 5.8 6.7 7.7 8.7 9.7 11.6 15.5 19.4 29 38.3
 
8% Gross Train Load 4 5.2 6.6 7.9 9.2 10.5 11.8 13.1 15.8 21 26.3 39.5 52.5
8% Trailing Load 2.5 3.2 4.1 4.9 5.7 6.5 7.3 8.1 9.8 13 16.3 24.5 32.5
 
9% Gross Train Load 3.6 4.8 6 7.1 8.3 9.5 10.7 11.9 14.3 19 23.8 35.7 47.5
9% Trailing Load 2.1 2.8 3.5 4.1 4.8 5.5 6.2 6.9 8.3 11 13.8 20.7 27.5
 
10% Gross Train Load 3.2 4.3 5.4 6.5 7.6 8.7 9.8 10.9 13 17.4 21.7 32.6 43.4
10% Trailing Load 1.7 2.3 2.9 3.5 4.1 4.7 5.3 5.9 7 9.4 11.7 17.6 23.4