loco-info.com - São Paulo Railway No. 21 and 22

The largest tank locomotives on the São Paulo Railway at the time had a 4-8-0T wheel arrangement and were called “Jumbos”. They were supplied by Avonside and were obviously intended for another railway company. So they came to this railway company in 1882 after they had been re-gauged to 5 feet and 3 inches. The first driving axle had no wheel flanges to improve running characteristics in curves.

General
Built	1882
Manufacturer	Avonside
Axle config	4-8-0 (Twelve-wheeler)
Gauge	5 ft 3 in (Irish broad gauge)

Dimensions and Weights
Length	32 ft 2 3/4 in
Wheelbase	24 ft 2 in
Fuel capacity	coal

Boiler

Boiler

Power Plant
Driver diameter	49.5 in
Boiler pressure	140 psi
Expansion type	simple
Cylinders	two, 18 1/2 x 24 in

Power
Power source	steam
Estimated power	600 hp (447 kW)
Starting effort	19,747 lbf

Calculated Values
Optimal speed	19 mph

steam locomotive

freight

tank locomotive

last changed: 07/2023

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