46051 to 46061
- Axle: 1'D1'
- Total quantity: 11
- First year: 1937
- Manufacturer: Henschel
Description
In the mid 1930's, TCDD ordered these eleven Mikados. Their design is derived from the BR41, a successful German engine specifically built for fast freight duties. The 46051 are bit lighter than the BR41 and have larger wheels, they have many of the standard component from the German locomotives of the that time. The 46051 shares the same boiler and same engines than the 56001 that were produced at the same time. Only the wheel diameter was larger, thus the 46051 where faster than the 56001, but of course had less tractive power.
The 46051 were intended for fast passenger service along the Istanbul Ankara main line. Their tall wheels made them well suited to cross the Anatolian steppe. Once this line got dieselised, the 46051 found a home in Konya, working along the where they survived until the end of steam in Turkey, at the very end of the 1980's. Their design made them ideally suited for all kind of work on the light gradients lines around Konya. They remained unchallenged in Turkey in terms of speed for a steam engines.
Pictures
46054 outside Ankara Depot. 20th August 1955. Photo Alan Swale | 
46061 at Haydarpaşa Station heading the ‘Toros Ekspresi’, 8.40 a.m. to Ankara with through dining car and sleepers to Baghdad. 15th September 1955. Photo Alan Swale |
46057 with a freight train to Konya. On the left: 56733. Ulukisla, 5th Mai 1974. Photo: Benno Bickel | 
The same 46057 in Afyon, in 1984. Photo Robin Garn |
46060 getting ready, Konya depot in 1984. Photo Robin Garn | |
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Numbering
| Eng. Nbr | Manuf. Date | Manufacturer | Manuf. Nbr | Remark |
|---|---|---|---|---|
| 46051 | 1937 | Henschel | 23135 | |
| 46052 | 1937 | Henschel | 23136 | |
| 46053 | 1937 | Henschel | 23137 | |
| 46054 | 1937 | Henschel | 23654 | |
| 46055 | 1937 | Henschel | 23655 | |
| 46056 | 1937 | Henschel | 23656 | |
| 46057 | 1937 | Henschel | 23657 | |
| 46058 | 1937 | Henschel | 23658 | |
| 46059 | 1937 | Henschel | 23659 | |
| 46060 | 1937 | Henschel | 23660 | |
| 46061 | 1937 | Henschel | 23661 |
Engine main characteristics
| Engine axle type | 1'D1' |
| Driving wheel dia | 1750 mm |
| Front bissel wheel dia | 850 mm |
| Rear bissel wheel dia | 1250 mm |
| Number of cylinder | 2 |
| Cylinder diameter | 650 mm |
| Piston stroke | 660 mm |
| Boiler pressure | 16 bar |
| Grate surface | 4 m2 |
| Boiler pipe length | 6 m |
| Heating surface | 223,2 m2 |
| Superheating surface | 105,75 m2 |
| Fixed wheel base length | 3,8 m |
| Coupled wheel base length | 5,7 m |
| Overall wheel base | 11,9 m |
| Weight empty | 94,75 T |
| Weight loaded | 104,4 T |
| Adhesion weight | 72,8 T |
| Load per driving wheel | 18,2 T |
| Max speed | 100 km/h |
| Tractive effort | 19,1 T |
| Power (HP) | 1900 HP |
| Tender axle type | 2'2' |
| Tender water capacity | 29 m3 |
| Tender coal capacity | 8 T |
| Tender weight empty | 26,5 T |
| Tender weight loaded | 63,5 T |
| Loc + tender length | 22,86 m |
| Loc + tender weight | 167,9 T |