Data from DeGolyer, Vol 63, pp. 334. See also "Juan Grinan", Louisiana Planter and Sugar Manufacturer, Vol LIV, No. 2 (15 January 1915), p. 46. Works numbers were 52510 in November 1919 and 57402 in October 1923.
When Juan Grinan died in 1915, his holdings in Jamaica included the Albion, Parnassus, Sandy Gully, and Sevens Estates. "The enterprise in Jamaica of Mr. Grinan was exhibited in the ability and energy displayed in his planting operations and in his sugar factory work," according to the Louisiana Planter's obituary. (A 1902 assessment of the Albion Estate noted that the availability of the Yallahs River for irrigation supported "excellent crops of cane on land that would otherwise be almost valuless for any agricultural purpose." (p. 79 of the Jamaica Department of Agriculture's Bulletin, Vol 1, Part 4, April 1903).
The obituary added Grinan's sugar was of "such excellent quality that they were largely sold in the island for local consumption." And he proved equal to competition both from growers of cane in other countries and the burgeoning beet-sugar cultivation in Jamaica.
A few years later, the lightly built tramway (14 lb/yard or 7 kg/metre rail) demanded a very light locomotive and tender. The former could weigh no more than 18,000 lb. Grinan Estates returned to Eddystone for a duplicate four years later.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Parnassus |
| Locobase ID | 14782 |
| Railroad | Grinan Estates |
| Country | Jamaica |
| Whyte | 0-6-0 |
| Number in Class | 2 |
| Road Numbers | |
| Gauge | 2' |
| Number Built | 2 |
| Builder | Baldwin |
| Year | 1919 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.25 / 1.60 |
| Engine Wheelbase (ft / m) | 5.25 / 1.60 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 19.62 / 5.98 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 18,000 / 8165 |
| Engine Weight (lbs / kg) | 18,000 / 8165 |
| Tender Loaded Weight (lbs / kg) | 14,000 / 6350 |
| Total Engine and Tender Weight (lbs / kg) | 32,000 / 14,515 |
| Tender Water Capacity (gals / ML) | 500 / 1.89 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 10 / 5 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 24 / 610 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 8" x 12" / 203x305 |
| Tractive Effort (lbs / kg) | 4352 / 1974.04 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.14 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 43 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 7.83 / 2.39 |
| Firebox Area (sq ft / m2) | 23 / 2.14 |
| Grate Area (sq ft / m2) | 4.20 / 0.39 |
| Evaporative Heating Surface (sq ft / m2) | 175 / 16.26 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 175 / 16.26 |
| Evaporative Heating Surface/Cylinder Volume | 250.67 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 672 |
| Same as above plus superheater percentage | 672 |
| Same as above but substitute firebox area for grate area | 3680 |
| Power L1 | 2659 |
| Power MT | 977.01 |