The reference for locomotives and railcars


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Mexican State Railway classes G-030 and G-033
Mexico | 1921 | 48 produced

The Nacionales de México class G-030 consisted of 20 three-foot gauge Consolidations delivered by Baldwin in 1921. The outside frames were designed in such a way that a later conversion to standard gauge would have been possible. They were fired with oil and were designed for lines with gradients of up to 4.5 percent and curve radii of up to 21 degrees (85 meters).

In reality, however, there were only a few modifications that were carried out by the NdeM shortly after delivery. These affected, for example, the blastpipe, the position of the air pump and the fire door. Eight more followed in 1924, which had a larger firebox and were designated class G-033. They became the standard freight locomotive in rural areas and survived until the late 1960s.

Axle config2-8-0 (Consolidation) 
Gauge3 ft (Three feet)
Dimensions and Weights
Wheelbase18 ft 11 in
Fixed wheelbase11 ft 6 in
Total wheelbase47 ft 0 1/2 in47 ft 3 in
Service weight113,200 lbs110,265 lbs
Adhesive weight103,000 lbs99,265 lbs
Total weight192,500 lbs182,265 lbs
Axle load25,750 lbs24,816 lbs
Water capacity3,600 us gal
Fuel capacity1,510 us gal (oil)2,102 us gal (oil)
Power sourcesteam
Estimated power700 hp (522 kW)725 hp (541 kW)
Optimal speed17 mph
Starting effort26,600 lbf
Power Plant
Driver diameter41 in
Boiler pressure180 psi
Expansion typesimple
Cylinderstwo, 18 x 22 in
Grate area18.7 sq ft19.4 sq ft
Firebox area79 sq ft87.3 sq ft
Tube heating area1,582 sq ft1,590.7 sq ft
Evaporative heating area1,661 sq ft1,678 sq ft
Total heating area1,661 sq ft1,678 sq ft
Calculated Values
steam locomotive
last changed: 02/2024

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