Oahu Railway & Land Company 2-8-2 "Mikado" Locomotives in the USA
The Oahu Railway and Land Company was organized in 1888 on Oahu, the third largest of the Hawaiian Islands. The railway was headquartered in Honolulu and was built to connect the docks in Honolulu with the sugar cane plantations. By August 1889 tracks were being laid, locomotives were ordered and some of the rolling stock was already on hand. The first locomotives were very small 4-4-0 types, which were more than adequate to pull the flat cars used for freight.
By the early 1920s the railway needed new motive power and it was impressed by reports of how well the new Class K-28 locomotives were doing on the D&RGW. The Oahu ordered two locomotives from the American Locomotive Company of a design similar to the ones on the D&RGW. They were delivered in 1925 and shortly thereafter two more were ordered for delivery in early 1926. These four locomotives were numbered 60, 70, 80 and 90 and were the only 2-8-2s the railway would own.
There are no surviving Oahu Railway 2-8-2 "Mikado" type locomotives.
Class Details by Steve Llanso of Sweat House Media
Class 60 (Locobase 13857)
Data from Alco Builder's Card depicting order S-1500 and archived at [
] (last accessed 12 February 2012). See also Jim Chiddix & MacKinnon Simpson, Next Stop Honolulu (Honolulu: Sugar Cane Press, 2004), Works numbers were 66279-66280 in March 1925 and 66685-66686 in February 1926.
This Hawai'ian engine was a duplicate of the "Sport Model" Mikes built for the Denver & Rio Grande Western two years earlier (Locobase 5042). There were detail differences, of course, but the photos show that they were close sisters. Richard Duley's information hosted on Wes Barris's steamlocomotive.com notes that the OR&L ordered ten in 1925 and ten in 1926.
Locobase hasn't seen a road-numbering pattern that goes in jumps of 10 before, but likes the implied ambition.
The 70, 80, and 90 all retired in 1948 and were scrapped a few years later; only the 60 remained operational in 1949. It wasn't scrapped until 1966.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 60 |
| Locobase ID | 13857 |
| Railroad | Oahu Railway & Land Company |
| Country | USA |
| Whyte | 2-8-2 |
| Number in Class | 4 |
| Road Numbers | 60, 70, 80, 90 |
| Gauge | 3' |
| Number Built | 4 |
| Builder | Alco-Schenectady |
| Year | 1925 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.25 / 3.73 |
| Engine Wheelbase (ft / m) | 28.83 / 8.79 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.42 |
| Overall Wheelbase (engine & tender) (ft / m) | 52.98 / 16.15 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 119,000 / 53,978 |
| Engine Weight (lbs / kg) | 156,000 / 70,760 |
| Tender Loaded Weight (lbs / kg) | 83,300 / 37,784 |
| Total Engine and Tender Weight (lbs / kg) | 239,300 / 108,544 |
| Tender Water Capacity (gals / ML) | 3500 / 13.26 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1800 / 6813 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 50 / 25 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 200 / 1380 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 22" / 457x559 |
| Tractive Effort (lbs / kg) | 27,540 / 12491.95 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.32 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 106 - 2.25" / 57 |
| Flues (number - dia) (in / mm) | 22 - 5.5" / 140 |
| Flue/Tube length (ft / m) | 16 / 4.88 |
| Firebox Area (sq ft / m2) | 97 / 9.01 |
| Grate Area (sq ft / m2) | 30.10 / 2.80 |
| Evaporative Heating Surface (sq ft / m2) | 1594 / 148.14 |
| Superheating Surface (sq ft / m2) | 409 / 38.01 |
| Combined Heating Surface (sq ft / m2) | 2003 / 186.15 |
| Evaporative Heating Surface/Cylinder Volume | 245.99 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 6020 |
| Same as above plus superheater percentage | 7224 |
| Same as above but substitute firebox area for grate area | 23,280 |
| Power L1 | 13,037 |
| Power MT | 966.11 |
