Data from digitized version of Charles Bryant Fairchild, Street Railways: Their Construction, Operation and Maintenance, (New York: Street Railway Publishing Company, World Building, 1892), pp. 209-210. See also DeGolyer, Volume 15, p. 20. Baldwin supplied three (works numbers 9813-9814, 9827) in February 1889. Boiler pressure is an estimate.
Fairchild noted that the elevated locomotives were less likely to derail if their leading truck were deleted, but the Suburban line used the "double-ender" shown here. "These have a pony truck at each end fitted with swinging bolster and radial bar so that they curve easily, and do not cut the driver flange." He adds: "The saddle tank, however, obstructs the view of the engineer somewhat, and makes the machine top heavy. This can be obviated by placing the tank and fuel box over one of the trucks [although the Suburban's tank sat squarely over the drivers.]"
The Baldwin specs stated that the firebox was to be "easily removed".
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | L1/Suburban |
| Locobase ID | 8783 |
| Railroad | Manhattan Railway Company |
| Country | USA |
| Whyte | 2-4-2T |
| Number in Class | 3 |
| Road Numbers | 11-13 |
| Gauge | Std |
| Number Built | 3 |
| Builder | Burnham, Williams & Co |
| Year | 1889 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.50 / 1.68 |
| Engine Wheelbase (ft / m) | 17.58 / 5.36 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.31 |
| Overall Wheelbase (engine & tender) (ft / m) | 17.58 / 5.36 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 40,000 / 18,144 |
| Engine Weight (lbs / kg) | 60,000 / 27,216 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 600 / 2.27 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 33 / 16.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 130 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 18" / 356x457 |
| Tractive Effort (lbs / kg) | 8122 / 3684.08 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.92 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 160 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 6.90 / 2.10 |
| Firebox Area (sq ft / m2) | 52.40 / 4.87 |
| Grate Area (sq ft / m2) | 15.90 / 1.48 |
| Evaporative Heating Surface (sq ft / m2) | 476 / 44.24 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 476 / 44.24 |
| Evaporative Heating Surface/Cylinder Volume | 148.29 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2067 |
| Same as above plus superheater percentage | 2067 |
| Same as above but substitute firebox area for grate area | 6812 |
| Power L1 | 2391 |
| Power MT | 263.56 |