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French Eastern Railway series 11, 11S and 11S to No. 3501 to 3890
French State Railway 1-230 B
France | 1901 | 390 produced
Die Lokomotive, February 1937

The locomotives of the Est with the numbers 3501 to 3890 are considered the most important French 4-6-0 passenger locomotives. They were sorted into power class 11 by the Est. These 390 locomotives were developed from the series numbered 3401 to 3500 and built between 1901 and 1912 by a large number of companies from France and Germany. The first were the 3501 to 3520 from Maffei in Munich, followed by the 3521 to 3550 from Schneider et Cie. These were Du Busquet-De Glehn type locomotives, i.e. with a four-cylinder compound engine and drive on two axles. The locomotives up to number 3790 used saturated steam, from No. 3719 of 1911 superheaters were installed. The newer locomotives also had a larger diameter of the high-pressure cylinders with 370 instead of 350 mm and were classified as series 11s to distinguish them.

230 B 786 in 1958 in Chaumont/Marne
230 B 786 in 1958 in Chaumont/Marne
Ben Brooksbank

Although these locomotives with a driving wheel diameter of 1,750 mm were no express locomotives, they had a streamlined cab and were approved for speeds of 110 km/h. They were stationed at all depots in the Est network. After the locomotives had been delivered from the factory with superheaters and larger cylinders from 1911, most of the existing locomotives were converted in the same way. These converted machines were listed as the “11s bis” series. 36 examples were modernized by André Chapelon in 1932. They received new exhaust systems with six nozzles and smoke deflectors, which improved their power somewhat. When the SNCF was founded in 1938, there were still 388 examples, which were now designated 1-230 B 501 to 890. The twelve engines that had not undergone any conversion were withdrawn from service in 1951. The last of the rest disappeared in 1967.

Variantseries 11 3501-3598series 11 3599-3690series 11S, 11S bis 3691-3890
General
Built1901-1912
ManufacturerBâtignolles-Châtillon, Blanc-Misseron, Est, Fives-Lille, Franco-Belge, Hartmann, Henschel, Maffei, SACM, Schneider
Axle config4-6-0 (Ten-wheeler) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length61 ft 9 5/8 in
Length loco36 ft 9 1/8 in
Wheelbase26 ft 8 7/8 in
Fixed wheelbase13 ft 7 3/8 in
Empty weight136,528 lbs157,807 lbs
Service weight152,035 lbs171,850 lbs
Adhesive weight108,137 lbs117,087 lbs
Axle load36,156 lbs39,088 lbs
Water capacity3,434 us gal5,283 us gal5,812 us gal
Fuel capacity15,432 lbs (coal)13,228 lbs (coal)17,637 lbs (coal)
Power
Power sourcesteam
Estimated power1,140 hp (850 kW)1,609 hp (1,200 kW)
Optimal speed40 mph49 mph
Top speed68 mph
Starting effort18,284 lbf21,080 lbf
with start valve21,941 lbf25,296 lbf
Power Plant
Driver diameter68.9 in
Boiler pressure218 psi232 psi
Expansion typecompound
Cylindersfour, HP: 13 3/4 x 25 3/16 in
and LP: 21 5/8 x 25 3/16 in
four, HP: 14 9/16 x 25 3/16 in
and LP: 21 5/8 x 25 3/16 in
Boiler
Grate area27.6 sq ft34 sq ft
Firebox area140.9 sq ft174.7 sq ft
Tube heating area2,126.1 sq ft1,535.3 sq ft
Evaporative heating area2,267 sq ft1,710 sq ft
Superheater area401 sq ft
Total heating area2,267 sq ft2,110.9 sq ft
Calculated Values
steam locomotive
passenger
De Glehn compound
last changed: 02/2022
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