Sao Paulo Railway 0-6-2 Locomotives in Brazil
Class Details by Steve Llanso of Sweat House Media
Class Y228 (Locobase 7525)
Data from 1946 Beyer, Peacock catalogue hosted on Martyn Bane's website at [
] (accessed 21 May 2006). (Thanks to Teemu Koivumaki for his 2023 email that included a comprehensive listing of Brazilian steam locomotives.) Batch #1415 (works numbers 6765-6570, 6834-6840, 6851-68555)
Described as a suburban passenger engine in BP's catalogue, these six locomotives were the first of 3 batches of this arrangement supplied to the Brazillian railway in the 1930s. The other two 1417 & 1418 arrived in 1937. 1417 comprised 7 locomotives (builder's # 6834-6840) and 1418 added 5 more (6851-6855). Locobase isn't certain that the latter two batches had the same specs, but wouldn't be surprised.
The design shows a preference for acceleration and pulling power over maximum speed.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Y228 |
| Locobase ID | 7525 |
| Railroad | Sao Paulo Railway |
| Country | Brazil |
| Whyte | 0-6-2T |
| Number in Class | 18 |
| Road Numbers | Y228-Y245 |
| Gauge | 5'3" |
| Number Built | 18 |
| Builder | Beyer, Peacock |
| Year | 1933 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.14 / 3.70 |
| Engine Wheelbase (ft / m) | 21.98 / 6.70 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.55 |
| Overall Wheelbase (engine & tender) (ft / m) | 40.03 / 12.20 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 19,842 / 9000 |
| Weight on Drivers (lbs / kg) | 58,202 / 26,400 |
| Engine Weight (lbs / kg) | 86,267 / 39,130 |
| Tender Loaded Weight (lbs / kg) | 52,294 / 23,720 |
| Total Engine and Tender Weight (lbs / kg) | 138,561 / 62,850 |
| Tender Water Capacity (gals / ML) | 2640 / 10 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 32 / 16 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 49.20 / 1250 |
| Boiler Pressure (psi / kPa) | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15.75" x 20.47" / 400x520 |
| Tractive Effort (lbs / kg) | 15,264 / 6923.64 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.81 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 78.55 / 7.30 |
| Grate Area (sq ft / m2) | 19.05 / 1.77 |
| Evaporative Heating Surface (sq ft / m2) | 946 / 87.90 |
| Superheating Surface (sq ft / m2) | 280 / 26 |
| Combined Heating Surface (sq ft / m2) | 1226 / 113.90 |
| Evaporative Heating Surface/Cylinder Volume | 204.94 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3315 |
| Same as above plus superheater percentage | 4077 |
| Same as above but substitute firebox area for grate area | 16,811 |
| Power L1 | 11,928 |
| Power MT | 1355.45 |