Indian railways diesel locomotive
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Notes:
WDM7
Notes:
The under frame is an all welded construction comprising of two box section main beams with integral fuel tank at the centre, with suitable transverse braces and stretchers at load points. The underframe is capable of withstanding a buffing load of 400t. The locomotive is equipped with two 3-axle bogies of Trimount type fully equalised and fitted with individual traction motors on all axles (see above). The bogie rotates on a swivel bearing mounted on a single piece cast steel bogie frame. There are two load-bearing pads, one on each side of the cross member of the frame; the three thus form a 3-point support to carry the load on each bogie. The first carries 60% of the vertical load and also transmits and receives the traction and braking forces. The two side bearers equally share the remaining 40% of the vertical load. The suspension is in four groups of springs, each group consisting of two outer and two inner coils. One inner coil in each group of springs works in conjunction with a friction snubber. WDP1 (Chetak)
Notes: Apparently, the “251C” engine quoted refers to the DLW upgraded version of the Alco 251B and differs from a true Alco “C” variant. WDP2 (Pushpak)
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