Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 11, p. 255 Works numbers were 7013 in November 1883 and 7400 in August 1884
The ER & E operated in northern California, running up the canyons carved by its namesake river as that stream headed northwest toward Humboldt Bay. It was a lightly built road for the standard gauge and required these small Eight-wheelers (and a Mogul) to run on it.
The ER & E remained independent for almost 20 years before being merged with two other railroads into the San Francisco & Northwestern in 1903. The SF & NW in turn was merged into the Northwestern Pacific in 1907. The two 4-4-0s continued in service until they were srcrapped in July 1920 and December 1916, respectively.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Iaqua |
| Locobase ID | 11819 |
| Railroad | Eel River & Eureka |
| Country | USA |
| Whyte | 4-4-0 |
| Number in Class | 2 |
| Road Numbers | 1-2 |
| Gauge | Std |
| Number Built | 2 |
| Builder | Burnham, Parry, Williams & Co |
| Year | 1883 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6.50 / 1.98 |
| Engine Wheelbase (ft / m) | 19.08 / 5.82 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.34 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 30,000 / 13,608 |
| Engine Weight (lbs / kg) | 46,000 / 20,865 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1400 / 5.30 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 25 / 12.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 130 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 22" / 305x559 |
| Tractive Effort (lbs / kg) | 7293 / 3308.05 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.11 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 94 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.37 / 2.86 |
| Firebox Area (sq ft / m2) | 63.40 / 5.89 |
| Grate Area (sq ft / m2) | 12.10 / 1.12 |
| Evaporative Heating Surface (sq ft / m2) | 521 / 48.42 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 521 / 48.42 |
| Evaporative Heating Surface/Cylinder Volume | 180.90 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1573 |
| Same as above plus superheater percentage | 1573 |
| Same as above but substitute firebox area for grate area | 8242 |
| Power L1 | 3026 |
| Power MT | 444.75 |