French Mikado SNCF 141R

French Mikado SNCF 141R

The SNCF 141 R is a class of 2-8-2 steam locomotives of the Société Nationale des Chemins de fer Français (French State Railways). They were used all over the French rail network from 1945–1974.

At the end of World War II, there was a shortage of locomotives, and to quickly obtain the large number needed locomotives were ordered from the main American and Canadian locomotive builders under the Lend-Lease Program (and not the Marshall Plan, signed in April 1948, as often written).

The design was based on the Green Bay & Western Railroad's successfully customised Mikados, based somewhat on the USRA Light Mikado, suitably modified to meet the SNCF loading gauge. Modifications included the overall height, the fitting of European couplers and buffers, left-hand drive, smoke deflectors (to a unique and instantly recognisable style) and a Kylchap exhaust on the second batch.

The first order for 700 engines was placed in February 1945 with production split between the "big three" American locomotive builders: Baldwin Locomotive Works, Philadelphia, Pennsylvania, American Locomotive Company, Schenectady, New York, and Lima Locomotive Works, Lima, Ohio. Once financing was made available, the second batch of 640 engines was ordered from the "big three", plus the Canadian manufacturers Montreal Locomotive Works, Montreal Quebec and Canadian Locomotive Company, Kingston, Ontario. Most of this batch were built as oil burners, burning preheated heavy fuel oil (known in French as 'Mazout'), unlike the first batch which had all been designed as coal fired.

The massive introduction of oil fired locomotives was due to the fact that in the immediate post-war period, the quality coal was in high demand and SNCF was consuming 9 million tons per annum. Oil thus allowed savings in coal, even if in many depots it required a revolution in working conditions. The extra range permitted by oil—700 km (435 mi) instead of 400 km (250 mi)—explains also the more intensive use of the locomotives. The enginemen nicknamed the locomotives mazoutières or charbonnières ("coal-scuttles") according to fuel employed; oil-burners were also called les goudronneuses ("tar spraying machines") by their crews.

Sound Projects

There is 1 Sound Project for this Locomotive
French Mikado SNCF 141R 8 bit project by Barry's Bits, added on Feb. 26, 2014

French Mikado 141R steam engine Sound scheme.  Copyright (c) B T Gaskin

project:French Mikado 141 R steam engine:      
Author:Barry T Gaskin   using Fred Miller's SPJHelper and Digitrax SoundLoader.

(A) Function Key Usage:

F0-     Lights (no UK sounds)
F1-    Short Whistle- leave F1 latched ON to allow automatic whistles on start
F2-     Whistle          
F3-     Coal Shovel cycle- Leave F3 ON  to allow automatic coaling set by CV147
F4-     Vacuum pump manual ON (when moving)
F5-     Water injector
F6-     Steam Cylinder Blowdown
F7-     Wheelslip
F8-     Mute control,     [F8 ON is muted.]
F9-     Brake squeal
F10-     Power Sander
F11-     Power Greaser-  When speed=0!
F12-     steam safety blow off

sound FX defined CV's:     [decoder CV8=8  reset value in brackets]

CV58    Master Volume, 0-15, 0= max, (F8 used for Mute) [9]
CV60    Scheme select CV, 0=Steam,             [0]

CV121    Software Version, MUST be 2 or higher        [3]    (Read Only Value)
CV122    Product TYpe, 12 = Digitrax SFX sound decoder     Read Only Value
CV123    Hardware Version, 17= SDH104K1 decdoer        Read Only Value
CV124    Flash Signature                    [2]    (Read Only Value)
CV125    16KB free blocks                [0]    (Read Only Value)
CV126    FAT flags                    [7]    (Read Only Value)
CV127    Internal     Flags                [0]    (Read Only Value)
CV128    IPL counter                    [0]    (Read Only Value)

CV133 Steam Chuff/CAM config, 128=>EXT cam, 1-127=>DRIVER dia in inches[72]
CV134 Steam gear ratio trim, 32=100% ratio,    [32]
CV135    Volume when Muted            0-64        [0]

User configurable SoundCV's:

CV140    PRIME mover chuff vol              0-64    [60]
CV142    WHISTLE vol                0-64    [60]
CV143    Air features vol (popoff,drier,comp)    0-64    [30]
CV145    Coal/Sander vols             0-64    [40]        
CV147    Coal Shovel rate, (1= about 2secs)     1-64    [50]
CV148    Water Injector rate                [30]
CV149    Vacuum Pump rate                [25]
CV150    Whistle Selector,0=std , 1=Playable volume      [0]
CV152    Author ID    Digitrax=0xDD/221        [221]
CV153    Project ID    STD5                [18]
CV154    Steam Blowdown/Safety vol        0-64    [60]

CV160    Variant ID                    [4]

(C) General Notes

 The sounds in this sound project have been recorded from the actual steam locomotive while it was in operation other individual sounds have been modified from other authors of which I am grateful to
Each engine we have recorded has a distinct 'personality', so a particular locomotive example may sound slightly different due to unique e.g. tappet, crank-rate shell vibrations and exhaust-stack, chuff differences. Horns and bells are often moved between locomotives.


SoundLoader Software

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Format Information

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