Data from the US Military Railway Service Equipment Data Book for German Locomotives supplied by Allen Stanley from his extensive Rail Data Exchange in March 2004, supplemented by Albert Gieseler at [], last accessed on 10 May 2011.
This basic eight-coupled drag freight engine design obviously satisfied requirements as more than 2,800 were built over a 24-year period in both simple-expansion (G7.1-shown here) and compound versions (G7.2-Locobase 1277).
More than half of the simples -- 660 -- were taken up by the DRG in 1923.
Data from the table presented on pages 383, 385 of the Groupe VI. - GTnie civil. - Moyens de transport. DeuxiFme partie. Classes 32 (Tome I), part of the series of Rapports du Jury Internationale of the Exposition Unverselle Internationale de 1900 Paris Exposition, hosted on the website of Le Conservatoire numTrique des Arts & MTtiers ([], Accessed 21 August 2005).
This was the von Borries compound version of the basic 8-coupled drag freight engine design. A third more compounds were produced (in a 16-year period) than simples (G7.1, which see), even though the ratio between HP and LP volumes was a bit low.
691 of the compounds entered DRG service in 1923.
Data confirmed and expanded by the US Military Railway Service Equipment Data Book for German Locomotives supplied by Allen Stanley from his extensive Rail Data Exchange in March 2004. See also Albert Gieseler's Dampfmaschinen und Lokomotiven entry on the G8.1 at [], last accessed 4 November 2013 and diagram Lok: 150, Elsassiche Maschinenbau Geselleschaft from SACM locomotive book supplied by Dany Machi up at [
] as
Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007).
Tube diameter is the interior measurement. External tube diameter was 52 mm (2.05").
According to Charlie Oxley's article in the Australian Live Steam publication Blast Pipe (March 2001) (accessed via the web in August 2002), this version of the G8 freight engine was built in huge numbers. He gives a total, including those for railways other than the KPEV, of 5,297 engines. The key to the design's success was its simplicity (simple expansion as opposed to the earlier G7's von Borries compound setup) and high superheat.
Data from Christian Lindecke's [][
] and
from the US Military Railway Service Equipment Data Book for German Locomotives supplied by Allen Stanley from his extensive Rail Data Exchange in March 2004. See also Albert Gieseler's Dampfmaschinen und Lokomotiven entry at [], last accessed 5 November 2013 and diagram UG Type 150, Societe Alsacienne de Constructions Mecaniques from locomotive book supplied by Dany Machi up at [
] as Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007).
Superheated version of an eight-coupled drag-freight engine built over an eleven-year period. They had larger-diameter drivers than the earlier G7s (Locobase 1276 and Locobasd 1277) and were rated at 700 tons up a 1/2% grade at 40 kph (28 mph). Early problems with the superheater led to procuring the small class of G9s. Obviously the problem was at least tolerable because 656 were assigned numbers in the DRG in the mid-1920s.
After World War II, 200 put in up to a decade more of service on the Bundesbahn while 50 were taken into the East German Deutsche Reichsbahn. Some of the latter weren't retired until 1969.
Data from the US Military Railway Service Equipment Data Book for German Locomotives supplied by Allen Stanley from his extensive Rail Data Exchange in March 2004, supplemented and slightly amended by [], last accessed 14 May 2011.
Converted from the saturated-steam 8-coupled that was larger than the G7 series but built in much smaller numbers. These superheated variants were the only ones retained after World War II, hence their appearance in the MRS data book.
Data from Christian Lindecke's [] . (15 May 2004); and "Baureihe 55.23-24" at [
], last accessed 19 January 2023; and "Prussian G 9" in Wikipedia at [
], last accessed 19 January 2023.
This saturated-steam eight-coupled was larger than the G7 series but built in much smaller numbers. Wikipedia observes that the G8's career as a superheated eight-coupled goods engine got off to a shaky start. So the Prussian State ordered 200 from Borsig, Hanomag, Henschel & Sohn, and Schichau-Werke. Using the G7 frame, the design used a new boiler, which didn't exhibit the same power as the G8.
Most of the G9s hauled ore traffic from the Ruhr to ports on the North Sea. When the Deutsches Reichbahn was stood up in 1920, its motive power included 133 G9. As a condition of the 1919 Treaty requiring reparations, Belgium received 58 locomotives as their type 79. Eiight Polish State Railways (PKP) machines served as Tp5, and one locomotive to the French-occupied Saarland
The DRG superheated 35 of the class; see Locobase 1282.
Data from the US Military Railway Service Equipment Data Book for German Locomotives supplied by Allen Stanley from his extensive Rail Data Exchange in March 2004. See also diagram UG Type 157, Societe Alsacienne de Constructions Mecaniques from locomotive book supplied by Dany Machi up at [] as
Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007).
Operated as "heavy shunters."
According to Marklin, the model railroad supplier ([], 26 June 2004), these were built between 1910 and 1922. Three major railway systems -- Prussian State, Elsass-Lotheringen, and Oldenburg - all purchased substantial quantities and the Deutsche Reichsbahn returned to the builders for several dozen more to replace war losses.
The last left East German service in 1968.
DAta from [], last accessed 3 December 2006, supplemented by Albert Gieseler at [
], last accessed on 10 May 2011.
These little tanks were designed to replace smaller 0-6-0Ts on the Beuthen-Kattowicz narrow-gauge line of the Oberschlesische Schmalspurbahn (OSSB). The OSSB was a large network of 785-mm that eventually covered over 200 km.
Hartmann, Orenstein & Koppel, and Hagans all delivered locomotives in this class. They used the hollow Klien-Lindner axle for the rear set of drivers.
Of the 18, 8 survived to receive DRG class numbers.
All of those were out of service by 1939.
DAta from [], last accessed 3 December 2006, supplemented by Albert Gieseler at [
], last accessed on 10 May 2011.
Developed from the earlier T37s (Locobase 7995), this was a larger design, both in individual size and in number of engines. Moreover, O & K superheated the boiler. The result was a much more powerful locomotive for the narrow gauge. Note the perfectly square cylinder layout.
Like the T37s, the last T38s were retired in 1939.
Principal Dimensions by Steve Llanso of Middle Run Media | |||||
---|---|---|---|---|---|
Class | G7.1 / BR 55.0-55.6 | G7.2 / BR 55.7 - 55.13 | G8.1/BR 55.25-55.56 | G8/BR 55.16-55.22 | G9 / BR 55.23-55.24 -superheat |
Locobase ID | 1276 | 1277 | 1279 | 1278 | 1282 |
Railroad | Prussian State | Prussian State | Prussian State | Prussian State | Prussian State |
Country | Prussia | Prussia | Prussia | Prussia | Prussia |
Whyte | 0-8-0 | 0-8-0 | 0-8-0 | 0-8-0 | 0-8-0 |
Number in Class | 1205 | 1647 | 4934 | 1056 | 35 |
Road Numbers | 4401-4600/55.001-55.660 | 4601-4800/55.701-55.1392 | 4801-5000/55.1601-2256 | 55.2306-2433 (broken series)_ | |
Gauge | Std | Std | Std | Std | Std |
Number Built | 1205 | 1647 | 4934 | 1056 | |
Builder | several | several | KPEV | ||
Year | 1893 | 1895 | 1913 | 1902 | 1923 |
Valve Gear | Allan | Heusinger | Heusinger | Heusinger | |
Locomotive Length and Weight | |||||
Driver Wheelbase (ft / m) | 14.76 / 4.50 | 14.76 / 4.50 | 15.42 / 4.70 | 14.76 / 4.50 | 14.76 / 4.50 |
Engine Wheelbase (ft / m) | 14.76 / 4.50 | 14.76 / 4.50 | 15.42 / 4.70 | 14.76 / 4.50 | 14.76 / 4.50 |
Ratio of driving wheelbase to overall engine wheelbase | 1 | 1 | 1 | 1 | 1 |
Overall Wheelbase (engine & tender) (ft / m) | 38.62 / 11.77 | 43.14 / 13.15 | 42.49 / 12.95 | 38.63 / 11.78 | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 38,581 / 17,500 | 36,156 / 16,400 | 36,156 / 16,400 | ||
Weight on Drivers (lbs / kg) | 115,721 / 52,490 | 116,183 / 52,700 | 154,103 / 69,900 | 128,699 / 58,377 | 144,403 / 65,500 |
Engine Weight (lbs / kg) | 115,721 / 52,490 | 116,183 / 52,700 | 154,103 / 69,900 | 128,699 / 58,377 | 144,403 / 65,500 |
Tender Loaded Weight (lbs / kg) | 74,580 / 33,829 | 72,752 / 33,000 | 100,101 / 45,405 | 74,580 / 33,829 | |
Total Engine and Tender Weight (lbs / kg) | 190,301 / 86,319 | 188,935 / 85,700 | 254,204 / 115,305 | 203,279 / 92,206 | |
Tender Water Capacity (gals / ML) | 3171 / 12.01 | / 12.26 | 4359 / 16.51 | 4227 / 16.01 | 3168 / 12 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 7 / 6 | 6.60 / 6 | 6.60 / 6 | 7 / 6 | 5.50 / 5 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 48 / 24 | 48 / 24 | 64 / 32 | 54 / 27 | 60 / 30 |
Geometry Relating to Tractive Effort | |||||
Driver Diameter (in / mm) | 49.20 / 1250 | 49.20 / 1250 | 53.10 / 1350 | 53.10 / 1350 | 49.20 / 1250 |
Boiler Pressure (psi / kPa) | 174 / 1200 | 174 / 1200 | 198.70 / 1370 | 174 / 1200 | 174 / 1200 |
High Pressure Cylinders (dia x stroke) (in / mm) | 20.47" x 24.8" / 520x630 | 20.87" x 24.8" / 530x630 (1) | 23.62" x 25.98" / 600x660 | 23.62" x 25.98" / 600x660 | 21.65" x 24.8" / 550x630 |
Low Pressure Cylinders (dia x stroke) (in / mm) | 29.53" x 24.8" / 750x630 (1) | ||||
Tractive Effort (lbs / kg) | 31,239 / 14169.79 | 21,655 / 9822.55 | 46,102 / 20911.54 | 40,371 / 18312.00 | 34,944 / 15850.35 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.70 | 5.37 | 3.34 | 3.19 | 4.13 |
Heating Ability | |||||
Tubes (number - dia) (in / mm) | 218 - 2.008" / 51 | 224 - 1.969" / 50 | 133 - 2.047" / 52 | 152 - 1.772" / 45 | 138 - 1.969" / 50 |
Flues (number - dia) (in / mm) | 24 - 4.921" / 125 | 21 - 5.236" / 133 | 28 - 5.236" / 133 | ||
Flue/Tube length (ft / m) | 14.76 / 4.50 | 13.45 / 4.10 | 14.76 / 4.50 | 14.76 / 4.50 | 14.76 / 4.50 |
Firebox Area (sq ft / m2) | 119.01 / 11.06 | 113.09 / 10.50 | 149.62 / 13.90 | 140.04 / 13.01 | 125.89 / 11.70 |
Grate Area (sq ft / m2) | 24.53 / 2.28 | 24.64 / 2.30 | 28.63 / 2.66 | 25.94 / 2.41 | 37.66 / 3.50 |
Evaporative Heating Surface (sq ft / m2) | 1608 / 149.44 | 1506 / 140 | 1554 / 144.40 | 1491 / 138.48 | 1603 / 149 |
Superheating Surface (sq ft / m2) | 559 / 51.90 | 435 / 40.43 | 613 / 57 | ||
Combined Heating Surface (sq ft / m2) | 1608 / 149.44 | 1506 / 140 | 2113 / 196.30 | 1926 / 178.91 | 2216 / 206 |
Evaporative Heating Surface/Cylinder Volume | 170.22 | 306.75 | 117.94 | 113.16 | 151.70 |
Computations Relating to Power Output (More Information) | |||||
Robert LeMassena's Power Computation | 4268 | 4287 | 5689 | 4514 | 6553 |
Same as above plus superheater percentage | 4268 | 4287 | 7168 | 5552 | 8388 |
Same as above but substitute firebox area for grate area | 20,708 | 19,678 | 37,459 | 29,971 | 28,038 |
Power L1 | 3328 | 3007 | 9787 | 7137 | 10,464 |
Power MT | 253.61 | 228.24 | 560.06 | 489.03 | 639.02 |
Principal Dimensions by Steve Llanso of Middle Run Media | ||||
---|---|---|---|---|
Class | G9/ BR 55.23-55.24 saturated | T13 / BR 92.5-95.10 | T37 / 99.40 | T38 / 99 411 |
Locobase ID | 6038 | 1288 | 7995 | 7996 |
Railroad | Prussian State | Prussian State | Prussian State | Prussian State |
Country | Prussia | Prussia | Prussia | Prussia |
Whyte | 0-8-0 | 0-8-0T | 0-8-0T | 0-8-0T |
Number in Class | 200 | 656 | 18 | 27 |
Road Numbers | 5001-5150/55.2301-2433 | 99 401-99 408 | 99 411-99 421 | |
Gauge | Std | Std | 785 mm | 785 mm |
Number Built | 200 | 656 | 18 | 27 |
Builder | several | Orenstein & Koppel | Orenstein & Koppel | |
Year | 1907 | 1910 | 1904 | 1914 |
Valve Gear | Heusinger | Heusinger | Heusinger | Heusinger |
Locomotive Length and Weight | ||||
Driver Wheelbase (ft / m) | 14.76 / 4.50 | 17.26 / 5.26 | 11.15 / 3.40 | 12.47 / 3.80 |
Engine Wheelbase (ft / m) | 14.76 / 4.50 | 17.26 / 5.26 | 11.15 / 3.40 | 12.47 / 3.80 |
Ratio of driving wheelbase to overall engine wheelbase | 1 | 1 | 1 | 1 |
Overall Wheelbase (engine & tender) (ft / m) | 14.76 / 4.50 | 17.26 / 5.26 | 11.15 / 3.40 | 12.47 / 3.80 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 32,628 / 14,800 | 34,172 / 15,500 | 17,857 / 8100 | |
Weight on Drivers (lbs / kg) | 130,073 / 59,000 | 130,780 / 59,321 | 61,509 / 27,900 | 71,099 / 32,250 |
Engine Weight (lbs / kg) | 130,073 / 59,000 | 130,780 / 59,321 | 61,509 / 27,900 | 71,099 / 32,250 |
Tender Loaded Weight (lbs / kg) | 74,737 / 33,900 | |||
Total Engine and Tender Weight (lbs / kg) | 204,810 / 92,900 | |||
Tender Water Capacity (gals / ML) | 3168 / 12 | 1848 / 7 | 660 / 2.50 | 924 / 3.50 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5.50 / 5 | 3 / 3 | 1.40 / 1 | 1.70 / 2 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 | 54 / 27 | 26 / 13 | 30 / 15 |
Geometry Relating to Tractive Effort | ||||
Driver Diameter (in / mm) | 49.20 / 1250 | 49.20 / 1250 | 31.90 / 810 | 32.30 / 820 |
Boiler Pressure (psi / kPa) | 174 / 1200 | 174 / 1200 | 188.50 / 1300 | 188.50 / 1300 |
High Pressure Cylinders (dia x stroke) (in / mm) | 21.65" x 24.8" / 550x630 | 19.69" x 23.62" / 500x600 | 13.39" x 15.75" / 340x400 | 15.75" x 15.75" / 400x400 |
Tractive Effort (lbs / kg) | 34,944 / 15850.35 | 27,528 / 12486.51 | 14,183 / 6433.31 | 19,381 / 8791.08 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.72 | 4.75 | 4.34 | 3.67 |
Heating Ability | ||||
Tubes (number - dia) (in / mm) | 292 - 1.969" / 50 | 209 - 1.614" / 41 | 117 - 1.732" / 44 | 46 - 1.969" / 50 |
Flues (number - dia) (in / mm) | 12 - 5.236" / 133 | |||
Flue/Tube length (ft / m) | 14.76 / 4.50 | 13.12 / 4 | 10.17 / 3.10 | 9.51 / 2.90 |
Firebox Area (sq ft / m2) | 126.97 / 11.80 | 96.01 / 8.92 | 39.92 / 3.71 | 42.39 / 3.94 |
Grate Area (sq ft / m2) | 33.36 / 3.10 | 18.94 / 1.76 | 10.76 / 1 | 11.30 / 1.05 |
Evaporative Heating Surface (sq ft / m2) | 2126 / 197.60 | 1226 / 113.94 | 529 / 49.21 | 392 / 36.45 |
Superheating Surface (sq ft / m2) | 180 / 16.76 | |||
Combined Heating Surface (sq ft / m2) | 2126 / 197.60 | 1226 / 113.94 | 529 / 49.21 | 572 / 53.21 |
Evaporative Heating Surface/Cylinder Volume | 201.20 | 147.28 | 206.08 | 110.37 |
Computations Relating to Power Output (More Information) | ||||
Robert LeMassena's Power Computation | 5805 | 3296 | 2028 | 2130 |
Same as above plus superheater percentage | 5805 | 3296 | 2028 | 2790 |
Same as above but substitute firebox area for grate area | 22,093 | 16,706 | 7525 | 10,468 |
Power L1 | 3728 | 2924 | 2845 | 6354 |
Power MT | 252.74 | 197.16 | 407.88 | 788.09 |