Data from "Diagrams [of] Locomotives and Tender", published in Moskva (Moscow), 1935 p. 116-117, PDF supplied by Teemu Koivmaki in his 5 October 2019 email. (Many thanks to Teemu for sending what might never have fallen into Locobase's hands. An indispensable addition to Locobase's library.)
These cross-compound setup used 240 mm (9.45") piston valves to serve both cylinders. In any event, the design used more cylinder volume to generate more tractive effort.
A note in a listing of Soviet locomotive classes reports these engines as intended for the standard-gauge Warsaw-Vienna line.
See [] for the history, data from the table presented on pages 375, 377 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). See also "Kaiserlich Russische Eisenbahnen Serie ?zurückRussland | 1890
9,129 Stück: on the loco-info.com website at [], last accessed 15 December 2024. Kolomna, Brjansk, Votkinsk, Lugansk, Newski, Kirowwerk, Sormowo, Malyschew-Werk, Sigl, Henschel, BMAG
Beginning in 1890 with a prototype from Kolomna works, the Russisan State Railways acquired 9,129 eight-coupled cross-compound locomotives in several sub-class vafiants. BMZ's (Bryansk Engineering Works) online history says these cross-compound engines were nicknamed "Ovechka" ("Sheep" or "Lamb") and were "...the beloved engine of the old railroadmen. Sometime used in extreme conditions, 'O' was unpretentious and faultless, like the most reliable horse." Throughout the long production term, neither the grate area nor the firebox heating surface area changed.
Putliov Locomotive Works stated that one of these engines could pull a 650 ton load at 10 mph up a 1 in 125 (0.8%) gradient or 816 tons up a 1 in 170 (0.6%).
The Loco-info account states that the 1897 version featured an increase in boiler pressure to 11.5 bar, growth of the low-pressure cylinder to 730 mm and adoption of a 1,200 mm driver diameter
According to the BMZ history, Od, a modification of the original design, was produced from 1897 to 1902.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | Ch/Vc | Od |
| Locobase ID | 20666 | 4239 |
| Railroad | Russian State | Russian State |
| Country | Russia | Russia |
| Whyte | 0-8-0 | 0-8-0 |
| Number in Class | 27 | 3172 |
| Road Numbers | ||
| Gauge | Std | 5' |
| Number Built | 27 | 3172 |
| Builder | Briansk | several |
| Year | 1908 | 1897 |
| Valve Gear | Walschaert | Joy |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 12.76 / 3.89 | 12.76 / 3.89 |
| Engine Wheelbase (ft / m) | 12.76 / 3.89 | 12.76 / 3.89 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | ||
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 32,849 / 14,900 | |
| Weight on Drivers (lbs / kg) | 131,175 / 59,500 | 115,743 / 52,500 |
| Engine Weight (lbs / kg) | 131,175 / 59,500 | 115,743 / 52,500 |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | ||
| Tender Water Capacity (gals / ML) | ||
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 55 / 27.50 | 48 / 24 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 47.20 / 1200 | 47.20 / 1200 |
| Boiler Pressure (psi / kPa) | 178.40 / 1230 | 163.90 / 1130 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20.47" x 25.59" / 520x650 (1) | 19.69" x 25.59" / 500x650 (1) |
| Low Pressure Cylinders (dia x stroke) (in / mm) | 30.31" x 25.59" / 770x650 (1) | 28.74" x 25.59" / 730x650 (1) |
| Tractive Effort (lbs / kg) | 23,658 / 10731.10 | 19,929 / 9039.65 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.54 | 5.81 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 258 - 2.008" / 51 | 190 - 2.008" / 51 |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 13.78 / 4.20 | 15.29 / 4.66 |
| Firebox Area (sq ft / m2) | 127.02 / 11.80 | 115.17 / 10.70 |
| Grate Area (sq ft / m2) | 27.45 / 2.55 | 19.91 / 1.85 |
| Evaporative Heating Surface (sq ft / m2) | 1869 / 185.40 | 1643 / 152.60 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 1869 / 185.40 | 1643 / 152.60 |
| Evaporative Heating Surface/Cylinder Volume | 383.49 | 364.36 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 4897 | 3263 |
| Same as above plus superheater percentage | 4897 | 3263 |
| Same as above but substitute firebox area for grate area | 22,660 | 18,876 |
| Power L1 | 3289 | 2978 |
| Power MT | 221.11 | 226.89 |