meteor910
11-10-2009, 04:56 PM
SLSF 250-265, EMD NW-2
SLSF 300-304, EMD SW-7
SLSF 305-314, EMD SW-9
Notice how in the early Frisco diesel locomotive diagrams, the draftsman tried to make the drawing look very much like the real locomotive. The evolution of models as time moved on soon threw them a curve ball, however, as the later "phases" and/or newer models often had revised body features.
On these three EMD switcher models, notice how the draftsman got the headlights and the cab windows correct for the NW-2, SW-7 and SW-9 models, but he/she blew the hood/cab transition sections on the drawings. The early NW-2's had the step transition as shown on each of the diagrams, but the later NW-2 phases had a smooth transition to the cab, as did both the SW-7 and SW-9 models.
Perhaps these errors led to the later "Vest Pocket" diagram books only having elementary drawings of the individual locomotive models.
Ken
SLSF 300-304, EMD SW-7
SLSF 305-314, EMD SW-9
Notice how in the early Frisco diesel locomotive diagrams, the draftsman tried to make the drawing look very much like the real locomotive. The evolution of models as time moved on soon threw them a curve ball, however, as the later "phases" and/or newer models often had revised body features.
On these three EMD switcher models, notice how the draftsman got the headlights and the cab windows correct for the NW-2, SW-7 and SW-9 models, but he/she blew the hood/cab transition sections on the drawings. The early NW-2's had the step transition as shown on each of the diagrams, but the later NW-2 phases had a smooth transition to the cab, as did both the SW-7 and SW-9 models.
Perhaps these errors led to the later "Vest Pocket" diagram books only having elementary drawings of the individual locomotive models.
Ken