Grinan Estates 0-6-0 Locomotives in Jamaica

Class Details by Steve Llanso of Sweat House Media

Class Parnassus (Locobase 14782)

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 Sweat House Media

Locobase ID14782
RailroadGrinan Estates
Number in Class2
Road Numbers
Number Built2
Valve GearWalschaert
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 wheelbase1
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 / 11
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 Volume250.67
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation672
Same as above plus superheater percentage672
Same as above but substitute firebox area for grate area3680
Power L12659
Power MT977.01

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Wes Barris