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{{Infobox locomotive
{{Infobox locomotive
| name = Great Northern P-1 class
| name = Great Northern P-1 class
| image = File:Railway Age Great Northern Mountain Locomotive 1914.jpg
| image = File:Railway Age Great Northern Mountain Locomotive 1914.jpg
| alt =
| alt =
| caption = Chart from Railway Age Gazette Volume 57 (23) pp 1047-1050 showing Mountain type locomotive 1755
| caption = Chart from Railway Age Gazette Volume 57 (23) pp 1047-1050 showing Mountain type locomotive 1755
| powertype = Steam
| powertype = Steam
| designer =
| designer =
| builder = [[Lima Locomotive Works]]
| builder = [[Lima Locomotive Works]]
| ordernumber =
| ordernumber =
| serialnumber = 1364-1378
| serialnumber = 1364-1378
| buildmodel =
| buildmodel =
| builddate = May-June 1914
| builddate = May-June 1914
| totalproduction = 15
| totalproduction = 15
| rebuilder =
| rebuilder =
| rebuilddate = June-November 1928
| rebuilddate = June-November 1928
| numberrebuilt = 15
| numberrebuilt = 15
| website =
| website =
| whytetype = [[4-8-2]]
| whytetype = [[4-8-2]]
| uicclass = 2′D2′ h1
| uicclass = 2′D2′ h1
| driver = <!-- e.g. 1st, 2nd or 3rd coupled axle -->
| driver = <!-- e.g. 1st, 2nd or 3rd coupled axle -->
| gauge = {{track gauge|ussg|allk=on}}
| gauge = {{track gauge|ussg|allk=on}}
| leadingdiameter = {{convert|36.5|in|mm|0|abbr=on}}
| leadingdiameter = {{convert|36.5|in|mm|0|abbr=on}}
| driverdiameter = {{convert|63|in|mm|0|abbr=on}}
| driverdiameter = {{convert|63|in|mm|0|abbr=on}}
| trailingdiameter = {{convert|42.5|in|mm|0|abbr=on}}
| trailingdiameter = {{convert|42.5|in|mm|0|abbr=on}}
| tenderdiameter = <!-- tender wheel diameter -->
| tenderdiameter = <!-- tender wheel diameter -->
| minimumcurve =
| minimumcurve =
| wheelbase = {{convert|71.33|ft|mm|0|abbr=on}}
| wheelbase = {{convert|71.33|ft|mm|0|abbr=on}}
| engine total =
| engine total =
| leading =
| leading =
| drivers = <!-- USA terminology -->
| drivers = <!-- USA terminology -->
| coupled = <!-- British terminology -->
| coupled = <!-- British terminology -->
| trailing =
| trailing =
| tender total =
| tender total =
| tendertruck = <!-- USA terminology -->
| tendertruck = <!-- USA terminology -->
| tenderbogie = <!-- British terminology -->
| tenderbogie = <!-- British terminology -->
| pivotcentres = <!-- Garratts, diesels and electrics -->
| pivotcentres = <!-- Garratts, diesels and electrics -->
| wheelspacing = <!-- coupled wheels with asymmetrical wheel spacing -->
| wheelspacing = <!-- coupled wheels with asymmetrical wheel spacing -->
| length =
| length =
| over couplers =
| over couplers =
| over bufferbeams =
| over bufferbeams =
| width =
| width =
| height =
| height =
| frametype =
| frametype =
| axleload = {{convert|55000|lb|kg t|abbr=in|sp=us}}
| axleload = {{convert|55000|lb|kg t|abbr=in|sp=us}}
| leadingbogie/pony= <!-- load on leading bogie or pony wheel -->
| leadingbogie/pony = <!-- load on leading bogie or pony wheel -->
| coupled all = <!-- when the load on all coupled wheels are the same -->
| coupled all = <!-- when the load on all coupled wheels are the same -->
| coupled 1 = <!-- load on 1st coupled wheel -->
| coupled 1 = <!-- load on 1st coupled wheel -->
| coupled 2 = <!-- load on 2nd coupled wheel -->
| coupled 2 = <!-- load on 2nd coupled wheel -->
| coupled 3 = <!-- etc. -->
| coupled 3 = <!-- etc. -->
| coupled 4 =
| coupled 4 =
| coupled 5 =
| coupled 5 =
| coupled 6 =
| coupled 6 =
| coupled 7 =
| coupled 7 =
| coupled 8 =
| coupled 8 =
| trail bogie/pony = <!-- load on trailing bogie or pony wheel -->
| trail bogie/pony = <!-- load on trailing bogie or pony wheel -->
| tenderbogieload = <!-- load per tender bogie, use "Truck 1:<br/>Bogie 2:" if different -->
| tenderbogieload = <!-- load per tender bogie, use "Truck 1:<br/>Bogie 2:" if different -->
| tenderaxle = <!-- use "Axle 1:", etc with "<br/>" for line breaks -->
| tenderaxle = <!-- use "Axle 1:", etc with "<br/>" for line breaks -->
| weightondrivers = {{convert|218000|lb|kg t|abbr=in|sp=us}}
| weightondrivers = {{convert|218000|lb|kg t|abbr=in|sp=us}}
| locoweight = {{convert|236000|lb|kg t|abbr=in|sp=us}}
| locoweight = {{convert|236000|lb|kg t|abbr=in|sp=us}}
| tenderweight = {{convert|161000|lb|kg t|abbr=in|sp=us}}
| tenderweight = {{convert|161000|lb|kg t|abbr=in|sp=us}}
| locotenderweight = {{convert|487000|lb|kg t|abbr=in|sp=us}}
| locotenderweight = {{convert|487000|lb|kg t|abbr=in|sp=us}}
| tendertype =
| tendertype =
| fueltype = Nos. 1750-1759: [[Coal]]<br>Nos. 1760-1764: [[Fuel oil]]
| fueltype = Nos. 1750-1759: [[Coal]]<br>Nos. 1760-1764: [[Fuel oil]]
| fuelcap = {{convert|15|ST|t LT|1|abbr=on}}
| fuelcap = {{convert|15|ST|t LT|1|abbr=on}}
| watercap = {{convert|8000|usgal|abbr=on}}
| watercap = {{convert|8000|usgal|abbr=on}}
| tendercap =
| tendercap =
| sandcap =
| sandcap =
| fireboxtype = <!-- Round-top, Belpaire, combustion chamber, etc. -->
| fireboxtype = <!-- Round-top, Belpaire, combustion chamber, etc. -->
| firearea = {{convert|78|sqft|m2|abbr=on}}
| firearea = {{convert|78|sqft|m2|abbr=on}}
| boiler =
| boiler =
| boilertype = <!-- Domeless, etc -->
| boilertype = <!-- Domeless, etc -->
| pitch = <!-- height of boiler centreline above the railhead -->
| pitch = <!-- height of boiler centreline above the railhead -->
| diameterinside =
| diameterinside =
| lengthinside = <!-- distance between tube plates -->
| lengthinside = <!-- distance between tube plates -->
| smalltubediameter= <!-- number of boiler tubes and their outside diameter -->
| smalltubediameter = <!-- number of boiler tubes and their outside diameter -->
| largetubediameter= <!-- number of larger tubes (flues), if any, and their outside diameter -->
| largetubediameter = <!-- number of larger tubes (flues), if any, and their outside diameter -->
| boilerpressure = {{convert|180|lbf/in2|MPa|2|abbr=on}}
| boilerpressure = {{convert|180|lbf/in2|MPa|2|abbr=on}}
| safetyvalvetype = <!-- Salter spring balance, Ramsbottom, Pop, etc. -->
| safetyvalvetype = <!-- Salter spring balance, Ramsbottom, Pop, etc. -->
| feedwaterheater =
| feedwaterheater =
| totalsurface =
| totalsurface =
| tubearea =
| tubearea =
| archarea =
| archarea =
| fluearea =
| fluearea =
| tubesandflues =
| tubesandflues =
| fireboxarea = {{convert|340|sqft|m2|abbr=on}}
| fireboxarea = {{convert|340|sqft|m2|abbr=on}}
| superheatertype =
| superheatertype =
| superheaterarea =
| superheaterarea =
| cylindercount = Two
| cylindercount = Two
| cylindersize = {{convert|28|x|32|in|mm|0|abbr=on}}
| cylindersize = {{convert|28|x|32|in|mm|0|abbr=on}}
| frontcylindersize=
| frontcylindersize =
| rearcylindersize =
| rearcylindersize =
| hpcylindersize =
| hpcylindersize =
| lpcylindersize =
| lpcylindersize =
| valvegear = [[Walschaert valve gear|Walschaert]]
| valvegear = [[Walschaert valve gear|Walschaert]]
| valvetype =
| valvetype =
| valvetravel =
| valvetravel =
| valvelap =
| valvelap =
| valvelead =
| valvelead =
| transmission =
| transmission =
| trainheating =
| trainheating =
| locobrakes =
| locobrakes =
| locobrakeforce =
| locobrakeforce =
| trainbrakes =
| trainbrakes =
| safety =
| safety =
| coupling =
| coupling =
| maxspeed =
| maxspeed =
| poweroutput =
| poweroutput =
| tractiveeffort = {{convert|60928|lbf|kN|2|abbr=on}}
| tractiveeffort = {{convert|60928|lbf|kN|2|abbr=on}}
| factorofadhesion = 3.58
| factorofadhesion = 3.58
| operator = [[Great Northern Railway (U.S.)|Great Northern]]
| operator = [[Great Northern Railway (U.S.)|Great Northern]]
| operatorclass = P-1
| operatorclass = P-1
| powerclass =
| powerclass =
| numinclass =
| numinclass =
| fleetnumbers = 1750–1764
| fleetnumbers = 1750–1764 (P-1) 2175-2189 (Q-2)
| officialname =
| officialname =
| nicknames =
| nicknames =
| axleloadclass =
| axleloadclass =
| locale =
| locale =
| deliverydate =
| deliverydate =
| firstrundate =
| firstrundate =
| lastrundate =
| lastrundate =
| retiredate = 1928 (1953-1958 as Q-2s)
| retiredate = 1928 (1953-1958 as Q-2s)
| preservedunits =
| preservedunits = 0
| restoredate =
| restoredate =
| scrapdate =
| scrapdate =
| currentowner =
| currentowner =
| disposition = All rebuilt to Q-2 Class [[2-10-2]]s in 1928 and scrapped by last retirement
| disposition = All rebuilt to Q-2 Class [[2-10-2]]s in 1928 and scrapped by last retirement
| notes =
| notes =
}}
}}


Revision as of 20:34, 20 August 2020

Great Northern P-1 class
Chart from Railway Age Gazette Volume 57 (23) pp 1047-1050 showing Mountain type locomotive 1755
Type and origin
Power typeSteam
BuilderLima Locomotive Works
Serial number1364-1378
Build dateMay-June 1914
Total produced15
Rebuild dateJune-November 1928
Number rebuilt15
Specifications
Configuration:
​
 • Whyte4-8-2
 • UIC2′D2′ h1
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.36.5 in (927 mm)
Driver dia.63 in (1,600 mm)
Trailing dia.42.5 in (1,080 mm)
Wheelbase71.33 ft (21,741 mm)
Axle load55,000 lb (25,000 kilograms; 25 metric tons)
Adhesive weight218,000 lb (99,000 kilograms; 99 metric tons)
Loco weight236,000 lb (107,000 kilograms; 107 metric tons)
Tender weight161,000 lb (73,000 kilograms; 73 metric tons)
Total weight487,000 lb (221,000 kilograms; 221 metric tons)
Fuel typeNos. 1750-1759: Coal
Nos. 1760-1764: Fuel oil
Fuel capacity15 short tons (13.6 t; 13.4 long tons)
Water cap.8,000 US gal (30,000 L; 6,700 imp gal)
Firebox:​
 • Grate area78 sq ft (7.2 m2)
Boiler pressure180 lbf/in2 (1.24 MPa)
Heating surface:​
 • Firebox340 sq ft (32 m2)
CylindersTwo
Cylinder size28 in × 32 in (711 mm × 813 mm)
Valve gearWalschaert
Performance figures
Tractive effort60,928 lbf (271.02 kN)
Factor of adh.3.58
Career
OperatorsGreat Northern
ClassP-1
Numbers1750–1764 (P-1) 2175-2189 (Q-2)
Retired1928 (1953-1958 as Q-2s)
Preserved0
DispositionAll rebuilt to Q-2 Class 2-10-2s in 1928 and scrapped by last retirement

The Great Northern P-1 Class was a class of 15 4-8-2 "Mountain" type steam locomotives built by the Baldwin Locomotive Works in 1914 and operated by the Great Northern Railway.

History

The P-1s were at first assigned to pull passenger trains, but were proven to be too slow and were reassigned to freight service. Between June and November 1928, they were all rebuilt in to Q-2 2-10-2s.[1]

Disposition

Neither the P-1s nor the Q-2s have survived into preservation today. Retirement started on July 16, 1953 and were all retired by April 1958.

References

  1. ^ https://steamlocomotive.com/locobase.php?country=USA&wheel=4-8-2&railroad=gn
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