[external link] notes that one SJ was delivered new to the Boone & Scenic Valley Railroad in Iowa in 1989. Dr. Smith's data shows a relatively small boiler for the cylinders.
http://www02.so-net.ne.jp/~noz/zh2 by Ejii Nozawa also notes that Sifang Railway Works in the PRC began producing this engine in July 1952 as the first domestically produced steam locomotive. 454 of this later class was delivered from 1952 to 1960.
http://severn.dmu.ac.uk/~mlp/loco.html for construction data. See also http://www.lasteam.363.net/knowlege.htm and railography's http://www.railography.co.uk/info/cn_steam/profiles/sy.htm,
A design meant for light-duty operations and based on the JF-6 series of pre-war and wartime locomotives.
At least one has been exported to the United States and operates as New York, Susquehanna & Western #142
www.esrm.com/esrm/td-oct2k.html (20 June 2003)
"The New York, Susquehanna & Western Railroad's Chinese-built SY Class 2-8-2 is one of the newest steam locomotives in the world. Constructed in 1989 by the Tang Shun Locomotive and Rolling Stock Works not far from Beijing, China, 142 was originally constructed as no. 1647 for the Valley Railroad, a tourist line located in Essex, CT.
The Chinese SY Class engine is a redesigned manufacturing marvel based on the Pre-WWI American Locomotive Company's (Alco) original Mikados built for Japan. The design modifications migrated to Korea in the 1920s and eventually found their way to Manchuria where they became a standard Chinese engine class. These sleek and fuel efficient 90-ton locomotives share the same track gauge, air breaks, couplers and engineering details that are found on standard American built engines+making this stock Chinese steam locomotive adaptable to U.S. rails without modifications.
At the same time that the Valley Railroad's order was being manufactured at Tang Shun, a twin sister, engine no. 1651, was produced and shipped for the Knox & Kane Railroad in Marienville, PA."
|Principal Dimensions by Steve Llanso of Sweat House Media|
|Class||Jianshe (Construction)||Jiefang / JF 6 / Mikaro||SY (Aiming High)|
|Railroad||China State Railways||Chinese State Railways||China State Railways|
|Number in Class||1916||457||1988|
|Locomotive Length and Weight|
|Driver Wheelbase (ft / m)||14.50 / 4.42||14.47 / 4.41|
|Engine Wheelbase (ft / m)||33.43 / 10.19||31.27 / 9.53|
|Ratio of driving wheelbase to overall engine wheebase||0.43||0.46|
|Overall Wheelbase (engine & tender) (ft / m)||67.25 / 20.50|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)||33,731 / 15,300|
|Weight on Drivers (lbs / kg)||176,370 / 80,000||147,000||154,323 / 70,000|
|Tender Loaded Weight (lbs / kg)|
|Total Engine and Tender Weight (lbs / kg)|
|Tender Water Capacity (gals / ML)||9250 / 35.04||6336 / 24|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||17.50 / 15.90||10.60 / 9.60|
|Minimum weight of rail (calculated) (lb/yd / kg/m)||73 / 36.50||61 / 30.50||64 / 32|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||54 / 1372||54 / 1370||53.90 / 1370|
|Boiler Pressure (psi / kPa)||219 / 15.10||198.70 / 13.70||198.70 / 13.70|
|High Pressure Cylinders (dia x stroke) (in / mm)||22.8" x 28" / 579x711||20.87" x 27.95" / 530x710||20.87" x 27.95" / 530x710|
|Tractive Effort (lbs / kg)||50,176 / 22759.48||38,076 / 17271.00||38,147 / 17303.21|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.52||3.86||4.05|
|Firebox Area (sq ft / m2)|
|Grate Area (sq ft / m2)||55 / 5.11||49.17 / 4.57||48.42 / 4.50|
|Evaporative Heating Surface (sq ft / m2)||1944 / 180.67||1851 / 172||1851 / 172|
|Superheating Surface (sq ft / m2)||959 / 89.13||522 / 48.50||461 / 42.80|
|Combined Heating Surface (sq ft / m2)||2903 / 269.80||2373 / 220.50||2312 / 214.80|
|Evaporative Heating Surface/Cylinder Volume||146.92||167.26||167.26|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||12,045||9770||9621|
|Same as above plus superheater percentage||16,020||11,919||11,545|
|Same as above but substitute firebox area for grate area|