View source for LM-33

{{Short description|Soviet tram produced in the 1930s}}
{{Infobox train
| background       =
| name             = LM-33 "Americana"
| image            = LM-33-01.jpg
| imagealt         =
| imagesize        =
| caption          = LM-33 and LP-33 tram and trailer crossing the Staro-Nikolsky bridge in [[Saint Petersburg]]
| interiorimage    =
| interiorimagealt =
| interiorcaption  =
| service          =
| manufacturer     = [[PTMF|Petersburg Tram Mechanical Factory]]
| designer         = D.I. Kondratiev
| assembly         =
| ordernumber      =
| factory          =
| family           =
| replaced         =
| yearconstruction = 1933–1939
| yearservice      = 1933–18 March 1979
| refurbishment    =
| yearscrapped     =
| numberconstruction=
| numberbuilt      = 232
| numberservice    =
| numberpreserved  = 3 (2 × LM-33; 1 × LP-44)
| numberscrapped   =
| predecessor      =
| successor        =
| formation        =
| diagram          =
| code             =
| fleetnumbers     =
| capacity         = 178 (49 seated, 129 standing)
| operator         =
| depots           =
| lines            =
| carbody          =
| trainlength      =
| carlength        = {{convert|15000|mm|ftin|abbr=on}}
| width            = {{convert|2600|mm|ftin|abbr=on}}
| height           = {{convert|3318|mm|ftin|abbr=on}}
| lowfloor         =
| floorheight      =
| platformheight   =
| entrylevelorstep =
| doors            =
| art-sections     =
| wheeldiameter    =
| wheelbase        = {{convert|7500|mm|ftin|abbr=on}} (between bolsters)<br/>{{convert|1800|mm|ftin|abbr=on}} (between axles)
| maxspeed         = {{convert|50|km/h|abbr=on}}
| weight           = {{convert|22.2|tonne|abbr=on}}
| axleload         =
| steep gradient   =
| traction         =
| engine           =
| enginetype       =
| cylindercount    =
| cylindersize     =
| traction motors  = 4 × PT-35 or 4 × DTI-60
| poweroutput      = {{convert|40|kW|abbr=on}} (PT-35) or {{convert|55|kW|abbr=on}} (DTI-60)
| tractiveeffort   =
| transmission     =
| acceleration     =
| deceleration     =
| aux              =
| powersupply      = DC-7B controller
| hvac             =
| electricsystem   =
| collectionmethod =
| uicclass         =
| aarwheels        =
| wheels driven    = 8
| bogies           = 2
| minimum curve    =
| brakes           = Pneumatic direct motion and hand-wheeled motorized shoe
| safety           =
| coupling         =
| multipleworking  =
| light            =
| gauge            = {{Track gauge|1524mm|lk=on}}
| notes            =
| box_width        =
| label_width      =
| seating          =
| stocktype        =
}}
The '''LM-33''' is a four-axle [[USSR|Soviet]] [[tram]], produced by the [[PTMF|Petersburg Tram Mechanical Factory]] ([[PTMF]]) from 1933 to 1939.
==History==
In the early 1930s, D.I. Kondratiev and a group of Leningrad specialists visited America to learn about local developments. A new model of the Leningrad tram was derived from this research trip based on the [[Peter Witt streetcar|Peter Witt]] design. The design was modified in accordance with Soviet domestic requirements; in particular, the width of the wagon was reduced. The first tram of this design was produced by PTMF. It was originally named MA ('''M'''оторный '''A'''мериканского типа), and its unpowered trailer was named PA (rus. ПА, '''П'''рицепной '''A'''мериканского типa).  The model quickly earned the nickname "American". Later for political reasons, the wagon names were changed to LM-33 ('''L'''eningradsky '''M'''otorny projekta 19'''33''' goda) and LP-33 ('''L'''eningradsky '''P'''ritsepnoy projekta 19'''33''' goda), respectively.
LM-33 and LP-33 were built between 1933 and 1939.
==Operation==
LM-33/LP-33 trains were operated in Leningrad from 1933 until March 18, 1979.<ref>{{cite web| url=http://retro.tramway.ru/trams/4275+4454.html| script-title=ru:Трамвайный поезд ЛМ-33 №4275 + ЛП-33 №4454 ("Американка")| language=Russian| access-date=2008-05-15| archive-url=https://web.archive.org/web/20070224170728/http://retro.tramway.ru/trams/4275+4454.html| archive-date=2007-02-24| url-status=dead}}</ref>
==Preservation==
Two copies of LM-33 have survived in the electric transportation museum in Saint Petersburg: motor 4275 (undergoing restoration) and the loading platform at the LM-33 No. 4435 (awaiting restoration). An LP-33 trailer (number 4454) is also being restored.
==See also==
* [[Trams in Saint Petersburg]]
==References==
{{reflist}}
==External links==
{{commons category|LM-33}}
* [https://web.archive.org/web/20070224170728/http://retro.tramway.ru/trams/4275+4454.html LM-33 at site «Ретро-трамвай - Петербургская классика.»] {{in lang|ru}}
* [https://web.archive.org/web/20081015082214/http://tramnn.narod.ru/non_nn_cars/lm33/index.html LM-33 at site «Нижегородский Трамвай-Троллейбус»] {{in lang|ru}}
* [http://www.piter-tram.de/html/lm-33.html LM-33 at site «piter-tram.de»] {{in lang|de}}
{{SPBtrams}}
[[Category:Soviet tram vehicles]]