Data from DeGolyer, Volume 22, p. 36. See also 1918 USRA diagram book of L&A locomotives supplied by Allen Stanley in March 2004. Works number was 16436 in January 1899.
It's hard to believe this was a standard-gauge locomotive on American rails at the turn of the century. It was one of the lightest and least powerful eight-wheelers of the time. Or, to note another comparison, the famous Civil War locomotive General, built in 1855, had almost identical dimensions. The improbably low factor of adhesion can't be contradicted either by the Baldwin entry or the later USRA diagram.
The USRA diagram showed cylinder diameters of 14 3/4" (375 mm) and driver diameters of 57" (1,448 mm). A larger tender carried 3,600 US gallons (13,640 litres) of water and 8 tons (7.3 tonnes) of coal; its loaded weight was listed as 82,700 lb (37,512 kg).
The 100 was scrapped in January 1926.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 3/100 |
| Locobase ID | 6129 |
| Railroad | Arkansas, Louisiana & Southern |
| Country | USA |
| Whyte | 4-4-0 |
| Number in Class | 1 |
| Road Numbers | 3/100 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1899 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.33 / 2.23 |
| Engine Wheelbase (ft / m) | 21 / 6.40 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.35 |
| Overall Wheelbase (engine & tender) (ft / m) | 44.83 / 13.66 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 19,000 / 8618 |
| Weight on Drivers (lbs / kg) | 38,000 / 17,237 |
| Engine Weight (lbs / kg) | 60,000 / 27,216 |
| Tender Loaded Weight (lbs / kg) | 50,000 / 22,680 |
| Total Engine and Tender Weight (lbs / kg) | 110,000 / 49,896 |
| Tender Water Capacity (gals / ML) | 2500 / 9.47 |
| 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) | 54 / 1372 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 22" / 356x559 |
| Tractive Effort (lbs / kg) | 12,217 / 5541.54 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.11 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 126 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11 / 3.35 |
| Firebox Area (sq ft / m2) | 79 / 7.34 |
| Grate Area (sq ft / m2) | 12.80 / 1.19 |
| Evaporative Heating Surface (sq ft / m2) | 799 / 74.23 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 799 / 74.23 |
| Evaporative Heating Surface/Cylinder Volume | 203.83 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2304 |
| Same as above plus superheater percentage | 2304 |
| Same as above but substitute firebox area for grate area | 14,220 |
| Power L1 | 4934 |
| Power MT | 572.51 |