Smyrne Cassaba & Prolongements / Turkish State 2-6-2 Locomotives in Turkey
Class Details by Steve Llanso of Sweat House Media
Class 1/35.11 (Locobase 1620)
Data from A[nthony] E[dward] Durrant, The Steam Locomotives of Eastern Europe (Newton Abbot:David & Charles, 1966); "SCP - Smyrne Cassaba & Prolongements" at [
], last accessed 27 December 2021; and http://www.railhoo,de/reports/tuerkei_damplok, first accessed 13 January 2004. Works numbers were 1627-1628 in 1923 and 1629-1632 in 1924.
According to ToT's history of the SCP, "The purpose of the SCP was to carry agricultural goods from the countryside to Izmir." As usual for a Turkish railroad the escarpment leading from the coast to the Anatolian plateau proved the most challenging to overcome. SCP's response was to build east of the town of Alasehir, between Killik and Gnneyköy on a line that required scaling 2 1/2% grades.
When the Bandirma extension was opened, through traffic from Istanbul to Smyrna (later renamed Izmir)became possible. These slide-valve tanks supported SCP's Smyrna suburban service and given the road numbers, may have inaugurated it.
The sextet was aken into TCDD as 35.11-16 and operated in Smyrna until 1955.
Class 35.01 (Locobase 1619)
Data from "Locomotives on Turkish Railways", Railway Engineer, Volume 32, No 12 (December 1911), p. 392 http://www.railhoo,de/reports/tuerkei_damplok.. (13 January 2004) says that Maffei delivered these tanks in two batches in 1909 (works numbers 311-314) and 1911 (3274-3275).
Prairie well tanks built for the Bagdad Railway's Mersin-Tarsus-Adana subsidiary. Renumbered 35.01-05 in 1948 for the TCDD.
Class 35.51 (Locobase 1621)
Dara from A[nthony] E[dward] Durrant, The Steam Locomotives of Eastern Europe (Newton Abbot:David & Charles, 1966). Works numbers were 3278-3283 in 1911 and 3342-3345 in 1912.
Used in suburban Istanbul service. Durrant wrote that they started off with very small side tanks but may later received normal-size tanks and, possibly, superheating as well.
http://www.railhoo,de/reports/tuerkei_damplok.. (13 January 2004) shows deliveries in two years.
| Principal Dimensions by Steve Llanso of Middle Run Media | |||
|---|---|---|---|
| Class | 1/35.11 | 35.01 | 35.51 |
| Locobase ID | 1620 | 1619 | 1621 |
| Railroad | Smyrne Cassaba & Prolongements (TCDD) | Turkish State (TCDD) | Turkish State (TCDD) |
| Country | Turkey | Turkey | Turkey |
| Whyte | 2-6-2T | 2-6-2T | 2-6-2T |
| Number in Class | 6 | 5 | 10 |
| Road Numbers | 1-6/35.11-16 | 701-705 | 51-60 |
| Gauge | Std | Std | Std |
| Number Built | 6 | 5 | 10 |
| Builder | Corpet, Louvet & Cie | Maffei | Maffei |
| Year | 1923 | 1909 | 1911 |
| Valve Gear | Heusinger | Stephenson | |
| Locomotive Length and Weight | |||
| Driver Wheelbase (ft / m) | 13.78 / 4.20 | 10.83 / 3.30 | 12.14 / 3.70 |
| Engine Wheelbase (ft / m) | 27.56 / 8.40 | 26.20 / 7.99 | 27.20 / 8.29 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.50 | 0.41 | 0.45 |
| Overall Wheelbase (engine & tender) (ft / m) | 27.56 / 8.40 | 26.20 / 7.99 | 27.20 / 8.29 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 28,660 / 13,000 | ||
| Weight on Drivers (lbs / kg) | 85,980 / 39,000 | 73,028 / 33,125 | 110,209 / 49,990 |
| Engine Weight (lbs / kg) | 128,970 / 58,500 | 120,042 / 54,450 | 173,601 / 78,744 |
| Tender Loaded Weight (lbs / kg) | |||
| Total Engine and Tender Weight (lbs / kg) | 128,970 / 58,500 | 120,042 / 54,450 | 173,601 / 78,744 |
| Tender Water Capacity (gals / ML) | 1584 / 6 | 1848 / 7 | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 | 3 / 3 | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 48 / 24 | 41 / 20.50 | 61 / 30.50 |
| Geometry Relating to Tractive Effort | |||
| Driver Diameter (in / mm) | 55.10 / 1400 | 53.10 / 1350 | 55.50 / 1410 |
| Boiler Pressure (psi / kPa) | 181.30 / 1250 | 174 / 1200 | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18.9" x 23.62" / 480x600 | 16.93" x 23.62" / 430x600 | 19.69" x 24.8" / 500x630 |
| Tractive Effort (lbs / kg) | 23,598 / 10703.89 | 18,857 / 8553.40 | 25,622 / 11621.96 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.64 | 3.87 | 4.30 |
| Heating Ability | |||
| Tubes (number - dia) (in / mm) | |||
| Flues (number - dia) (in / mm) | |||
| Flue/Tube length (ft / m) | 12.14 / 3.70 | ||
| Firebox Area (sq ft / m2) | 89.34 / 8.30 | 129.38 / 12.02 | |
| Grate Area (sq ft / m2) | 21.21 / 1.97 | 19.38 / 1.80 | 29.60 / 2.75 |
| Evaporative Heating Surface (sq ft / m2) | 1389 / 129 | 1301 / 120.82 | 1784 / 165.75 |
| Superheating Surface (sq ft / m2) | |||
| Combined Heating Surface (sq ft / m2) | 1389 / 129 | 1301 / 120.82 | 1784 / 165.75 |
| Evaporative Heating Surface/Cylinder Volume | 181.10 | 211.40 | 204.12 |
| Computations Relating to Power Output (More Information) | |||
| Robert LeMassena's Power Computation | 3845 | 3372 | 5150 |
| Same as above plus superheater percentage | 3845 | 3372 | 5150 |
| Same as above but substitute firebox area for grate area | 15,545 | 22,512 | |
| Power L1 | 4373 | 4477 | |
| Power MT | 396.05 | 268.67 | |