Data from Christian Lindecke [] (21 November 2004). (Thanks to Alexander Blessing for his 10 September 2019 email noting the tender's coal and water capacities.
As described in [] and attributed to Jan-Martin Hertzsch, these two engines, known as Altona 561 and Altona 562 placed the engineer's cab ahead of the boiler. (It's difficult to picture the two-cab layout without an illustration.) The outside cylinders drove the second axle and operated in the same cycle while the center cylinder drove the first and was set with a 90-degree lead over the other two. Although 562 reached 85 mph with a 109 ton train, these engines were not successful, probably because of the malproportioned compounding ratio and were out of service by 1918.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | Altona 561 |
Locobase ID | 2474 |
Railroad | Prussian State |
Country | Germany |
Whyte | 4-4-4 |
Number in Class | 2 |
Road Numbers | 561-562 |
Gauge | Std |
Number Built | 2 |
Builder | Henschel & Sohn |
Year | 1904 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 8.37 / 2.55 |
Engine Wheelbase (ft / m) | / 12.40 |
Ratio of driving wheelbase to overall engine wheelbase | |
Overall Wheelbase (engine & tender) (ft / m) | 81.43 / 24.82 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 37,479 / 17,000 |
Weight on Drivers (lbs / kg) | 80,689 / 36,600 |
Engine Weight (lbs / kg) | 197,313 / 89,500 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 4382 / 16.60 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 7.70 / 7 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 67 / 33.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 86.60 / 2200 |
Boiler Pressure (psi / kPa) | 203.10 / 1400 |
High Pressure Cylinders (dia x stroke) (in / mm) | 20.67" x 24.8" / 525x630 (1) |
Low Pressure Cylinders (dia x stroke) (in / mm) | 20.67" x 24.8" / 525x630 |
Tractive Effort (lbs / kg) | 15,842 / 7185.82 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.09 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 345 - 1.772" / 45 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 16.40 / 5 |
Firebox Area (sq ft / m2) | 164.04 / 15.24 |
Grate Area (sq ft / m2) | 45.21 / 4.20 |
Evaporative Heating Surface (sq ft / m2) | 2796 / 259.76 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 2796 / 259.76 |
Evaporative Heating Surface/Cylinder Volume | 580.58 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 9182 |
Same as above plus superheater percentage | 9182 |
Same as above but substitute firebox area for grate area | 33,317 |
Power L1 | 11,006 |
Power MT | 601.42 |