Data from Zerah Colburn, The Locomotive Engine (1851). Boiler pressure is an estimate.
Reorganization of Holmes Hinkley's firm (Hinkley & Drury) in 1848 led him to choose the name of the city within which the plant was located. A review of the Hinkley list compiled by William Edson and published in the Railrway & Locomotive Historical Society's Railway Bulletin 142 suggests that two of this design were supplied to the Odgensburg & Northern in New York State in September 1850 as works numbers 276-277. The engines bore the names La Grasse and Ausable.
In addition to boiler details, Colburn also gave the following data:
Water room (cu ft) 69.6
Steam room (cu ft) 41
Size of steam ports 10 1/16 x 1 5/16"
Size of exhaust ports 10 1/16 x 1 11/16".
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 15" cylinders |
| Locobase ID | 8811 |
| Railroad | Boston Locomotive Works |
| Country | USA |
| Whyte | 4-4-0 |
| Number in Class | |
| Road Numbers | |
| Gauge | 6' |
| Number Built | |
| Builder | Boston Locomotive Works |
| Year | 1850 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 60 / 1524 |
| Boiler Pressure (psi / kPa) | 80 / 550 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 20" / 381x508 |
| Tractive Effort (lbs / kg) | 5100 / 2313.32 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 141 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11 / 3.35 |
| Firebox Area (sq ft / m2) | 56.74 / 5.27 |
| Grate Area (sq ft / m2) | 9.74 / 0.91 |
| Evaporative Heating Surface (sq ft / m2) | 767 / 71.28 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 767 / 71.28 |
| Evaporative Heating Surface/Cylinder Volume | 187.53 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 779 |
| Same as above plus superheater percentage | 779 |
| Same as above but substitute firebox area for grate area | 4539 |
| Power L1 | 2055 |
| Power MT | |