The reference for locomotives and railcars


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Lehigh Valley No. 708 to 712 and 753 to 772
later classes J-42, J-43 and J-49 to J-52
United States | 1895 | 25 produced
The first built No. 708
The first built No. 708
Ron Ziel, „American Locomotives 1858 to 1949”

Parallel to the five 4-4-0 with the numbers 659 to 663, the Lehigh Valley had five 4-6-0 built by Baldwin in 1895 and gave them the numbers 708 to 712. These were all Camelbacks and were nearly identical apart from the additional driving axle. They were completed by 20 other 4-6-0 with a slightly smaller boiler. The first of those also got a driver diameter of 68 inches, while the other 15 only had 62 inches.

Later when the new class scheme was adopted, they all got the prefix J, what denoted their wheel arrangement. The locomotives with 62 inch drivers were classed into class J-42, while the ones with 68 inches became class J-43. After rebuilds which changed boiler pressure and cylinder size, they were designated classes J-49 to J-52. The last ones were scrapped in 1930.

Axle config4-6-0 (Ten-wheeler) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase22 ft 11 in
Fixed wheelbase12 ft
Service weight130,000 lbs136,000 lbs
Adhesive weight100,000 lbs106,000 lbs
Total weight214,000 lbs220,000 lbs
Axle load33,335 lbs35,335 lbs
Water capacity4,000 us gal
Fuel capacitycoal
Power sourcesteam
Estimated power1,150 hp (858 kW)1,100 hp (820 kW)
Optimal speed38 mph37 mph33 mph
Starting effort19,200 lbf21,058 lbf
Power Plant
Driver diameter68 in62 in
Boiler pressure160 psi
Expansion typesimple
Cylinderstwo, 20 x 24 in
Grate area67 sq ft
Firebox area157 sq ft150 sq ft
Tube heating area1,758 sq ft1,712 sq ft
Evaporative heating area1,915 sq ft1,862 sq ft
Total heating area1,915 sq ft1,862 sq ft
Calculated Values
steam locomotive
last changed: 05/2024

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