Data from Chilean State Railways (EFE) diagram book, 53, supplied in August 2025 by Allen Stanley from his extensive Rail Data Exchange collection. See also Martin Coombs, Chilean steam locomotive list, Part 1, Broad-gauge locos, 2018, p. 57-59 downloaded from [], last accessed 8 April 2022.
Martin Coombs wrote that the "Squirrel" first came on the FCSV as a Sturrock tender fitted with a steam booster.
Data from by Flickr photostream of "0-6-0 Locomotive for the Chilian [sic] State Railways", last accessed []; and Chilean State Railways (EFE) diagram book, 53, supplied in August 2025 by Allen Stanley from his extensive Rail Data Exchange collection. See also Martin Coombs, Chilean steam locomotive list, Part 1, Broad-gauge locos, 2018, p. 113 downloaded from [], last accessed 8 April 2022. Works numbers 6658-6662 in February 1908.
This quintet of long-stroke six-coupleds may have not been fully satisfactory as all of them were listed as withdrawn in 1923. Perhaps their relatively small size for goods engines on the broad gauge proved telling.
A 1928 roster described them as "obsolete or knocked-down [dismantled?]. Coombs reports 461 hauling tren 127 between Afquintue and Loncoche collided with Type 63 locomotive 616 on 11 November 1916; the crash caused fatalities..
Data from "Locomotora Tipo-b" from scans supplied by by Senor Raul Moroni of Santiago, archived on [], last accessed 1 May 2022. See also Martin Coombs, "Chilean Steam Locomotive List - Parte 4", p. 220-222, downloaded from [], last accessed 8 April 2022. Works numbers were 1852-1857 in 1912.
A 1912 request for bids on six Tipo-bs to join three produced by Henschel & Sohn in 1909 induced replies from Arnold Jung, Berliner Maschinenbau, Borsig, Henschel, Orenstein & Koppel, and American Locomotive Company. Jung won the contract, which was signed on 15 May 1912.
Their initial duties supported construction, but they soon appeared on the EFE (State Railway), where they served into the 1950s..
| Principal Dimensions by Steve Llanso of Middle Run Media | |||
|---|---|---|---|
| Class | Ardilla/Tipo 11 | Tipo 53 | Tipo-b |
| Locobase ID | 21348 | 21048 | 21021 |
| Railroad | Chilean State Railways (EFE) | Chilean State Railways (EFE) | Chilean State Railways (EFE) |
| Country | Chile | Chile | Chile |
| Whyte | 0-6-0T | 0-6-0 | 0-6-0T |
| Number in Class | 2 | 5 | 6 |
| Road Numbers | 58-59 | 457-461 | 41-3, 17-23/40-45/5040-5045, 5057 |
| Gauge | 5'6" | 5'6" | 60 cm |
| Number Built | 2 | 5 | 6 |
| Builder | FCSV | Borsig | Jung |
| Year | 1873 | 1908 | 1912 |
| Valve Gear | Stephenson | Stephenson | Heusinger |
| Locomotive Length and Weight | |||
| Driver Wheelbase (ft / m) | 10 / 3.05 | 12.47 / 3.80 | 5.91 / 1.80 |
| Engine Wheelbase (ft / m) | 10 / 3.05 | 12.47 / 3.80 | 5.91 / 1.80 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 | 1 | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 10 / 3.05 | 47.59 / 14.51 | 5.91 / 1.80 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |||
| Weight on Drivers (lbs / kg) | 66,139 / 30,000 | 81,571 / 37,000 | 34,172 / 15,500 |
| Engine Weight (lbs / kg) | 66,139 / 30,000 | 81,571 / 37,000 | 34,282 / 15,550 |
| Tender Loaded Weight (lbs / kg) | 76,059 / 34,500 | ||
| Total Engine and Tender Weight (lbs / kg) | 157,630 / 71,500 | ||
| Tender Water Capacity (gals / ML) | 840 / 3.18 | 3181 / 12.05 | 924 / 3.50 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5.50 / 5 | 1.10 / 1 | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 37 / 18.50 | 45 / 22.50 | 19 / 9.50 |
| Geometry Relating to Tractive Effort | |||
| Driver Diameter (in / mm) | 48 / 1219 | 55.10 / 1400 | 24.60 / 624 |
| Boiler Pressure (psi / kPa) | 169.70 / 1160 | 169.70 / 1160 | 159.50 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 11" x 16" / 279x406 | 17.01" x 24.02" / 432x610 | 9.25" x 11.81" / 235x300 |
| Tractive Effort (lbs / kg) | 5818 / 2639.00 | 18,194 / 8252.67 | 5569 / 2526.06 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 11.37 | 4.48 | 6.14 |
| Heating Ability | |||
| Tubes (number - dia) (in / mm) | 174 - 2" / 51 | 180 - 1.97" / 50 | 78 - 1.535" / 39 |
| Flues (number - dia) (in / mm) | |||
| Flue/Tube length (ft / m) | 7.37 / 2.25 | 9.85 / 3 | 7.38 / 2.25 |
| Firebox Area (sq ft / m2) | 58.13 / 5.40 | 82.88 / 7.70 | 27.88 / 2.59 |
| Grate Area (sq ft / m2) | 12.78 / 1.19 | 19.38 / 1.80 | 5.38 / 0.50 |
| Evaporative Heating Surface (sq ft / m2) | 796 / 73.95 | 990 / 91.97 | 259 / 24.08 |
| Superheating Surface (sq ft / m2) | |||
| Combined Heating Surface (sq ft / m2) | 796 / 73.95 | 990 / 91.97 | 259 / 24.08 |
| Evaporative Heating Surface/Cylinder Volume | 452.31 | 156.70 | 281.96 |
| Computations Relating to Power Output (More Information) | |||
| Robert LeMassena's Power Computation | 2169 | 3289 | 858 |
| Same as above plus superheater percentage | 2169 | 3289 | 858 |
| Same as above but substitute firebox area for grate area | 9865 | 14,065 | 4447 |
| Power L1 | 8383 | 3464 | 2836 |
| Power MT | 838.29 | 280.86 | 548.90 |