View source for DRB Class 42

{{Short description|Class of German locomotives}}
{{refimprove|date=July 2016}}
{{Infobox locomotive
| name             = DRB Class 42<br/>PKP Ty3/43<br/>BDZ class 16<br/>CFL class 55
| bgcolor          = A00
| color            = FFF
| image            = Baureihe 42-Noerdlingen-Eisenbahnmuseum-vergrößert.jpg
| alt              = 
| caption          = 42 2768 in BEM Nördlingen, January 2010
| powertype        = Steam
| designer         = 
| builder          = {{ubl|[[Henschel & Sohn]] (2)|[[Berliner Maschinenbau]] (308)|[[Schichau-Werke]] (200)|[[Maschinenfabrik Esslingen]] (87)|[[Lokomotivfabrik Floridsdorf]] (338)}}
| ordernumber      = 
| serialnumber     = 
| buildmodel       = 
| builddate        = 1943 – 1949
| totalproduction  = 935
| rebuilder        = 
| rebuilddate      = 
| numberrebuilt    = 
| whytetype        = {{whyte|2-10-0}}
| uicclass         = 1{{prime}}E h2
| DRGtype          = G 56.17
| driver           = Third coupled axle
| gauge            = {{track gauge|sg}}
| leadingdiameter  = {{convert|850|mm|ftin|frac=8|abbr=on}}
| driverdiameter   = {{convert|1400|mm|ftin|frac=8|abbr=on}}
| tenderdiameter   = {{convert|930|mm|ftin|frac=8|abbr=on}}
| carrydiameter    = 
| minimumcurve     = 
| wheelbase        = 
|  wheelspacing    = {{ubl|{{convert|2600|mm|ftin|frac=8|abbr=on}} +|{{convert|1650|mm|ftin|frac=8|abbr=on}} +|{{convert|1650|mm|ftin|frac=8|abbr=on}} +|{{convert|1650|mm|ftin|frac=8|abbr=on}} +|<u>{{convert|1650|mm|ftin|frac=8|abbr=on}} {{=}}</u>}}
|  engine total    = {{convert|9200|mm|ftin|frac=8|abbr=on}}
|  leading         = 
|  drivers         = <!-- USA terminology -->
|  coupled         = <!-- British terminology -->
|  trailing        = 
|  tender total    = {{ubl|{{convert|1800|mm|ftin|frac=8|abbr=on}} +|{{convert|2300|mm|ftin|frac=8|abbr=on}} +|<u>{{convert|1800|mm|ftin|frac=8|abbr=on}} {{=}}</u>|{{convert|5900|mm|ftin|frac=8|abbr=on}}}}
|  tendertruck     = <!-- USA terminology -->
|  tenderbogie     = <!-- British terminology -->
|  wheelbasewithtender = {{convert|19000|mm|ftin|frac=8|abbr=on}}
| length           = 
|  over headstocks = {{convert|21700|mm|ftin|frac=8|abbr=on}}
|  over buffers    = {{convert|23000|mm|ftin|frac=8|abbr=on}}
| width            = 
| height           = {{convert|4400|mm|ftin|frac=8|abbr=on}}
| frametype        = 
| axleload         = {{convert|17.2|t|abbr=on}}
|  leadingbogie/pony= <!-- load on leading bogie or pony wheel -->
|  coupled all     = <!-- when the load on all coupled wheels are the same -->
|  coupled 1       = <!-- load on 1st coupled wheel -->
|  coupled 2       = <!-- load on 2nd coupled wheel -->
|  coupled 3       = <!-- etc. -->
|  coupled 4       = 
|  coupled 5       = 
|  trail bogie/pony= <!-- load on trailing bogie or pony wheel -->
|  tenderbogieload = <!-- load per tender bogie, use "Truck 1:<br/>Bogie 2:" if different -->
|  tenderaxle      = <!-- use "Axle 1:", etc with "<br/>" for line breaks -->
| weightondrivers  = {{convert|85.7|t|abbr=on}}
| emptyweight      = {{convert|86.8|t|abbr=on}}
| serviceweight    = {{convert|96.9|t|abbr=on}}
| locoweight       = 
| tenderweight     = 
| locotenderweight = 
| tendertype       = 2{{prime}}2{{prime}}&nbsp;T&nbsp;30 or 2{{prime}}2{{prime}}&nbsp;T&nbsp;32
| fueltype         = Coal
| fuelcap          = {{convert|10|t|1|abbr=on}}
| watercap         = {{convert|30.0|or|32|m3|impgal usgal|sigfig=3|abbr=on}}
| tendercap        = 
| sandcap          = 
| fireboxtype      = <!-- Round-top, Belpaire, combustion chamber, etc. -->
|  firearea        = {{convert|4.7|m2|abbr=on}}
| boiler           = <!-- Watson Standard no. x, etc -->
|  boilertype      = <!-- Domeless, etc -->
|  pitch           = {{convert|3150|mm|ftin|frac=8|abbr=on}}
|  diameterinside  = 
|  lengthinside    = {{convert|4800|mm|ftin|frac=8|abbr=on}}
|  smalltubediameter= {{convert|51|mm|in|frac=16|abbr=on}}, 143 off
|  largetubediameter= {{convert|133|mm|in|frac=16|abbr=on}}, 43 off
| boilerpressure   = {{convert|16|bar|kgf/cm2 lbf/in2|sigfig=3|abbr=on}}
| safetyvalvetype  = <!-- Salter spring balance, Ramsbottom, Pop, etc. -->
| feedwaterheater  = 
|  fireboxarea     = {{convert|19.3|m2|abbr=on}}
|  tubearea        = {{convert|99.3|m2|abbr=on}}
|  archarea        = 
|  fluearea        = {{convert|81.0|m2|abbr=on}}
|  tubesandflues   = 
|  totalsurface    = {{convert|199.6|m2|abbr=on}}
| superheatertype  = 
|  superheaterarea = {{convert|75.8|m2|abbr=on}}
| cylindercount    = Two, outside
| cylindersize     = {{convert|630|x|660|mm|in|frac=16|abbr=on}}
| hpcylindersize   = 
| lpcylindersize   = 
| cogwheelbore     = 
| cogwheelstroke   = 
| cylinderpressure = 
| valvegear        = 
| valvetype        = 
| valvetravel      = 
| valvelap         = 
| valvelead        = 
| transmission     = 
| trainheating     = Steam
| locobrakes       = 
| locobrakeforce   = 
| trainbrakes      = 
| safety           = 
| coupling         = 
| maxspeed         = {{convert|80|km/h|abbr=on}}
| indicatedpower   = {{convert|2200|PS|kW hp|sigfig=3|abbr=on}}
| poweroutput      = 
| tractiveeffort   = 
| factorofadhesion = 
| operator         = [[Deutsche Reichsbahn]]
| operatorclass    = 
| powerclass       = 
| numinclass       = 
| fleetnumbers     = DRG 42&nbsp;001 ... 42&nbsp;2810,<br/>42&nbsp;0001 + 42&nbsp;0002
| officialname     = 
| nicknames        = 
| axleloadclass    = 
| locale           = 
| deliverydate     = 
| firstrundate     = 
| lastrundate      = 
| retiredate       = 1969
| withdrawndate    = 
| preservedunits   = 
| restoredate      = 
| scrapdate        = 
| currentowner     = 
| disposition      = 
| notes            = 
}}
The '''DRB Class 42'''<ref group=note>Wartime locomotives classes are prefixed DRB (Deutsche Reichsbahn) to distinguish them from those introduced by the DRG (prefixed DRG), which became defunct in 1937, and those introduced later by the East German Deutsche Reichsbahn (prefixed DR).</ref> was a type of [[steam locomotive]] produced for the [[Deutsche Reichsbahn]]. It is one of the three main classes of the so-called war locomotives (''[[Kriegslokomotive]]n''), the other two being [[DRG Class 50|class 50]] and [[DRG Class 52|52]].

Seventy of the class were captured during [[World War II]] by the Soviet Union; under Russian ownership they were given the classification '''TL''' (ТЛ).<ref>{{cite web|url =http://scado.narod.ru/rail/r_pt.html|script-title=ru:Грузовые паровозы, захваченные в 1939-1945 гг.|trans-title=Freight locomotives captured between 1939 and 1945| language = Russian| work= scado.narod.ru}}</ref>

== History ==
These engines, built from 1943 onwards, were the second heavy locomotive class of this type after the [[DRG Class 52]]. They were built for duties on routes that were cleared for a higher [[axle load]], because they were more economical there than the  KDL 1 ''[[Kriegslokomotive]]n'' of Class 52. In principle they were slimmed down [[DRG Class 44|44s]]. The Class 42 was procured as ''[[Kriegslokomotive]]'' KDL 3.

The total of 859 units had a number of improvements to the driving and running gear. Originally it was intended to build very large numbers of these engines, but the end of the [[Second World War]] put paid to that. A [[Condensing steam locomotive|condenser locomotive]], based on the Class 42 was also planned, but did not come to fruition.

At the end of the war there were still half-finished engines in the workshops. So after 1945, 16 engines were built for the Reichsbahn in the western zone by the [[Maschinenfabrik Esslingen]] ('Esslingen Locomotive Works'). 126 engines were built by Polish factories for the  [[Polskie Koleje Państwowe|PKP]] in Poland as Class Ty43 and three ex DRG engines also went over to the PKP as Class Ty3. Another 76 units were produced by the [[Lokomotivfabrik Floridsdorf]] in [[Vienna]]. These were not built for the [[Austrian Federal Railways]] (ÖBB), but were sold in 1949 to the [[Chemins de Fer Luxembourgeois|CFL]] in [[Luxembourg]] - 20 engines (CFL class 55), in 1952 to Bulgarian State Railways ([[Bulgarian State Railways|BDZ]]) - 33 pcs (BDZ class 16). and the rest to [[Deutsche Reichsbahn (East Germany)|DR]] and various industrial enterprises in [[East Germany]].

The majority of the locomotives that ended up in the [[Deutsche Bundesbahn]] were stationed in the [[Saarland]]. These were taken out of service by 1960. The engines with the DR continued to work until 1968, and these with BDZ until 1988. Nowadays (2015) there are only two engines in operation - CFL 5519 and BDZ 16.27 (in service since April 2015). They are used for special and tourist trains. Another operational BDZ engine 16.01 is retired since 2013.

The DB and DR locomotives had operating numbers 42 001–2810 and 42 5000. However they did not run consecutively and there were gaps.

The engines were mainly equipped with 2{{prime}}2{{prime}}&nbsp;T&nbsp;30 or 2{{prime}}2{{prime}}&nbsp;T&nbsp;32 [[Tender locomotives|tenders]].
{{clear}}
== DB Class 42.90 (Franco-Crosti locomotive) ==
{{Infobox locomotive
| name             = DB Class 42.90
| bgcolor          = A00
| color            = FFF
| image            = Modell 42 9000 7.jpg
| alt              = 
| caption          = a model of the DRG 42.90
| powertype        = Steam
| designer         = 
| builder          = 
| ordernumber      = 
| serialnumber     = 
| buildmodel       = 
| builddate        = 
| totalproduction  = 
| rebuilder        = [[Henschel & Sohn]]
| rebuilddate      = 1951
| numberrebuilt    = 2
| whytetype        = {{whyte|2-10-0}}
| uicclass         = 1{{prime}}E h2
| DRGtype          = G 56.18
| driver           = <!-- e.g. 1st, 2nd  or 3rd coupled axle -->
| gauge            = {{track gauge|sg}}
| leadingdiameter  = {{convert|850|mm|ftin|frac=8|abbr=on}}
| driverdiameter   = {{convert|1,400|mm|ftin|frac=8|abbr=on}}
| tenderdiameter   = {{convert|930|mm|ftin|frac=8|abbr=on}}
| carrydiameter    = 
| minimumcurve     = 
| wheelbase        = 
|  wheelspacing    = <!-- coupled wheels with asymmetrical wheel spacing --> 
|  engine total    = {{convert|9200|mm|ftin|frac=8|abbr=on}}
|  leading         = 
|  drivers         = <!-- USA terminology -->
|  coupled         = <!-- British terminology -->
|  trailing        = 
|  tender total    = {{convert|5900|mm|ftin|frac=8|abbr=on}}
|  tendertruck     = <!-- USA terminology -->
|  tenderbogie     = <!-- British terminology -->
|  wheelbasewithtender = {{convert|19000|mm|ftin|frac=8|abbr=on}}
| racksystem       = 
| pivotcentres     = <!-- Garratts, diesels and electrics -->
| length           = 
|  over headstocks = 
|  over buffers    = {{convert|22975|mm|ftin|frac=8|abbr=on}}
| width            = 
| height           = 
| frametype        = 
| axleload         = {{convert|17.4|t|abbr=on}}
|  leadingbogie/pony= <!-- load on leading bogie or pony wheel -->
|  coupled all     = <!-- when the load on all coupled wheels are the same -->
|  coupled 1       = <!-- load on 1st coupled wheel -->
|  coupled 2       = <!-- load on 2nd coupled wheel -->
|  coupled 3       = <!-- etc. -->
|  coupled 4       = 
|  coupled 5       = 
|  trail bogie/pony= <!-- load on trailing bogie or pony wheel -->
|  tenderbogieload = <!-- load per tender bogie, use "Truck 1:<br/>Bogie 2:" if different -->
|  tenderaxle      = <!-- use "Axle 1:", etc with "<br/>" for line breaks -->
| weightondrivers  = {{convert|87.1|t|abbr=on}}
| emptyweight      = {{convert|87.6|t|abbr=on}}
| serviceweight    = {{convert|98.7|t|abbr=on}}
| locoweight       = 
| tenderweight     = 
| locotenderweight = 
| tendertype       = 2{{prime}}2{{prime}}&nbsp;T&nbsp;30
| fueltype         = Coal
| fuelcap          = {{convert|10|t|abbr=on}}
| watercap         = {{convert|30|m3|impgal usgal|abbr=on}}
| tendercap        = 
| sandcap          = 
| fireboxtype      = <!-- Round-top, Belpaire, combustion chamber, etc. -->
|  firearea        = {{convert|3.9|m2|abbr=on}}
| boiler           = <!-- Watson Standard no. x, etc -->
|  boilertype      = <!-- Domeless, etc -->
|  pitch           = <!-- height of boiler centreline above the railhead -->
|  diameterinside  = 
|  lengthinside    = {{convert|5200|mm|ftin|frac=8|abbr=on}}
|  smalltubediameter= {{convert|63.5|mm|in|frac=16|abbr=on}}, 42 off
|  largetubediameter= {{convert|152|mm|in|frac=16|abbr=on}}, 28 off
| boilerpressure   = {{convert|16|bar|kgf/cm2 psi|abbr=on}}
| safetyvalvetype  = <!-- Salter spring balance, Ramsbottom, Pop, etc. -->
| feedwaterheater  = 
|  fireboxarea     = {{convert|15.9|m2|abbr=on}}
|  tubearea        = {{convert|39.5|m2|abbr=on}}
|  archarea        = 
|  fluearea        = {{convert|65.9|m2|abbr=on}}
|  tubesandflues   = 
|  totalsurface    = {{convert|250.2|m2|abbr=on}} *
| superheatertype  = 
|  superheaterarea = {{convert|63.5|m2|abbr=on}}
| cylindercount    = Two, outside
| cylindersize     = {{convert|600|x|660|mm|in|frac=16|abbr=on}}
| cylinderpressure = 
| valvegear        = 
| valvetype        = 
| valvetravel      = 
| valvelap         = 
| valvelead        = 
| transmission     = 
| trainheating     = 
| locobrakes       = 
| locobrakeforce   = 
| trainbrakes      = 
| safety           = 
| coupling         = 
| maxspeed         = {{convert|80|km/h|0|abbr=on}}
| indicatedpower   = {{convert|1630|PS|kW hp|sigfig=3|abbr=on}}
| poweroutput      = 
| tractiveeffort   = 
| factorofadhesion = 
| operator         = [[Deutsche Bundesbahn]]
| operatorclass    = 
| powerclass       = 
| numinclass       = 
| fleetnumbers     = 42&nbsp;9000 – 42&nbsp;9001
| officialname     = 
| nicknames        = 
| axleloadclass    = 
| locale           = 
| deliverydate     = 
| firstrundate     = 
| lastrundate      = 
| retiredate       = 1960
| withdrawndate    = 
| preservedunits   = 
| restoredate      = 
| scrapdate        = 
| currentowner     = 
| disposition      = 
| notes            = <nowiki>*</nowiki> includes {{convert|128.96|m2|abbr=on}} in the 206-tube feedwater heater
}}
In 1952, the firm of [[Henschel]] rebuilt locomotives 52 893 and 52 894 with [[Franco-Crosti boiler|Franco-Crosti]] economisers (''Abgasvorwärmer''). Because of the resulting higher [[axle load]], the engines were classified by the [[Deutsche Bundesbahn]] as '''Class 42.90''' locomotives and given the operating numbers 42 9000 and 42 9001.

Engine number 42 9000 was stabled in [[Bingerbrück]] and retired in 1959. In 1960 the second one, stationed in [[Oberlahnstein]], was taken out of service. The experience accumulated with these very economical locomotives was used in the 31 engines of [[DRG Class 50|Class 50.40]].

Both locomotives were coupled with 2'2' T 30 tenders.

== Notes ==
{{reflist| group=note}}

==See also==
* [[List of DRG locomotives and railbuses]]
* [[The Museum of the Moscow Railway]], at [[Paveletsky Rail Terminal]], [[Moscow]]
* [[Rizhsky Rail Terminal]], Home of the Moscow Railway Museum
* [[Varshavsky Rail Terminal]], [[St.Petersburg]], Home of the Central Museum of Railway Transport, Russian Federation
* [[History of rail transport in Russia]]

==References==
{{Reflist}}
{{refbegin}}
* {{cite book| first=Alfred B.| last=Gottwaldt| title=Deutsche Kriegslokomotiven 1939 - 1945| date=1996| publisher=Transpress| isbn=3-344-71032-X| language=de}}
* {{Hütter-01bis45|pages=413–433}}
* {{Weisbrod-EFA1.2|pages=19–24}}
{{refend}}

== External links ==
{{commons category|DRG Class 42}}
* [http://www.dlok.de/94.htm Section diagram and technical data for the Class 42]

{{DRG locomotives}}
{{Rolling stock of Russia}}

[[Category:Steam locomotives of Germany|42]]
[[Category:2-10-0 locomotives]]
[[Category:Deutsche Reichsbahn-Gesellschaft locomotives|42]]
[[Category:Railway locomotives introduced in 1943]]
[[Category:Berliner locomotives]]
[[Category:Esslingen locomotives]]
[[Category:Henschel locomotives]]
[[Category:Floridsdorf locomotives]]
[[Category:Schichau-Werke locomotives]]
[[Category:Standard-gauge locomotives of Germany]]
[[Category:1′E h2 locomotives]]
[[Category:Freight locomotives]]