Template:Infobox locomotive/testcases

Performance figures
Performance figures
Maximum speed	100 mph

Specifications
Specifications
Leading dia.	12 in
Driver dia.	25 in
Trailing dia.	15 in
Frame type	Plate frame
Total weight	1 kg

test depr parameters
test depr parameters
Leading dia.
Specifications
Leading dia.	12 in
Driver dia.	25 in
Trailing dia.	15 in
Frame type	Plate frame
Total weight	1 kg
Maximum speed
Performance figures
Maximum speed	100 mph
Operators
Career
Operators	ABCRR
Class	freight X
Numbers	AZ19

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Test taken from /doc page examples.

January 2019: remove deprecated parameters

| framesize = fs - replaced by  frametype = the type of [[locomotive frame]] (e.g. "Plate frame")
| weight = wt - replaced by ''locoweight'', ''tenderweight'', and ''locotenderweight''
| leadingsize = ldsz -  – replaced by ''leadingdiameter''
| driversize = drivsz - replaced by ''driverdiameter''
| trailingsize = trsz - replaced by ''trailingdiameter''
| topspeed = topsp - replaced by ''maxspeed''
| railroad = rr -  replaced by ''operator'' 
| railroadclass = rrclass – replaced by ''operatorclass''
| roadnumber = roadnr - replaced by ''fleetnumbers''
| image_size = use ''imagesize''

Side by side comparison

test depr parameters

Specifications
Leading dia.	12 in
Driver dia.	25 in
Trailing dia.	15 in
Frame type	Plate frame
Total weight	1 kg

Performance figures
Maximum speed	100 mph

Career
Operators	ABCRR
Class	freight X
Numbers	AZ19

All parameters used (223)

Side by side comparison

all 223 parameters

Type and origin
hatnote
Power type	powertype
Designer	designer
Builder	builder
Order number	ordernumber
Serial number	serialnumber
Model	buildmodel
Build date	builddate
Total produced	totalproduction
Rebuilder	rebuilder
Rebuild date	rebuilddate
Number rebuilt	numberrebuilt
Website	website

Specifications
Configuration:
• Whyte	whytetype
• AAR	aarwheels
• UIC	uicclass
• Commonwealth	Britishclass
• German	DRG type
Driver	driver
Gauge	gauge
Trucks	trucks
Bogies	bogies
Leading dia.	leadingdiameter
Driver dia.	driverdiameter
Coupled dia.	coupleddiameter
Wheel diameter	wheeldiameter
Trailing dia.	trailingdiameter
Tender wheels	tenderdiameter
Outer carrying wheel diameter	outerdiameter
Inner carrying wheel diameter	innerdiameter
Carrying wheel diameter	carrydiameter [deprecated]
Minimum curve	minimumcurve
Wheelbase	wheelbase
• Axle spacing (Asymmetrical)	wheelspacing
• Engine	engine total
• Leading	leading
• Drivers	drivers
• Coupled	coupled
• Trailing	trailing
• Truck	truck
• Bogie	bogie
• Tender	tender total
• Tender truck	tendertruck
• Tender bogie	tenderbogie
• Overall	overallwheelbase
• incl. tender	wheelbasewithtender
Rack system	racksystem
Driving cogwheels	drivingcogwheels
Braking cogwheels	brakingcogwheels
Cogwheel size	cogwheelsize
Pivot centres	pivotcentres
Pivot pitch	pivotpitch [deprecated]
Panto shoes	pantoshoecentres
Length:
• Over couplers	over couplers
• Over headstocks	over headstocks
• Over beams	over bufferbeams
• Over body	body
• Over buffers	over buffers
Width	width
Height:
• Pantograph	pantodown
• Body height	bodyonly
Frame type	frametype
Axle load	axleload
• Leading	leadingbogie/pony
• Coupled	coupled all
• 1st coupled	coupled 1
• 2nd coupled	coupled 2
• 3rd coupled	coupled 3
• 4th coupled	coupled 4
• 5th coupled	coupled 5
• 6th coupled	coupled 6
• 7th coupled	coupled 7
• 8th coupled	coupled 8
• Trailing	trail bogie/pony
• Tender bogie	tenderbogieload
• Tender axle	tenderaxle
Adhesive weight	weightondrivers
Empty weight	emptyweight
Working weight	[deprecated]
Service weight	serviceweight
Loco weight	locoweight
Tender weight	tenderweight
Total weight	locotenderweight
Tender type	tendertype
Fuel type	fueltype
Fuel capacity	fuelcap
Lubricant cap.	lubecap
Coolant cap.	coolantcap
Water cap.	watercap
Tender cap.	tendercap
Sandbox cap.	sandcap
Fuel consumption	consumption
Water consumption	watercons
Power supply	powersupply
Electric system/s	electricsystem
Current pickup(s)	collectionmethod
Traction batteries	tractionbatteries
Range	range
Capacity	capcity
Prime mover	primemover
RPM range	rpmrange
• RPM low idle	rpmrange low
• RPM idle	rpmrange idle
• Nominal RPM	rpmnominal [deprecated]
• Maximum RPM	rpmrange max
Engine type	enginetype
Aspiration	aspiration
Displacement	displacement
Alternator	alternator
Generator	generator
Traction motors	tractionmotors
• Rating 1 hour	t/m amps 1 hr
• Continuous	t/m amps cont
Head end power	headendpower
Firebox:
• Type	fireboxtype
• Grate area	firearea
Boiler:
• Model	boiler
• Type	boilertype
• Pitch	pitch
• Diameter	diameterinside
• Tube plates	lengthinside
• Small tubes	smalltubediameter
• Large tubes	largetubediameter
No. of heating tubes	heatingtubes [deprecated]
No. of smoke tubes	smoketubes [deprecated]
Heating tube length	heatingtubelength [deprecated]
Boiler pressure	boilerpressure
Safety valve	safetyvalvetype
Feedwater heater	feedwaterheater
Heating surface:
• Firebox	fireboxarea
• Radiative	radiativearea [deprecated]
• Tubes	tubearea
• Arch tubes	archarea
• Flues	fluearea
• Tubes and flues	tubesandflues
• Evaporative	evaporativearea [deprecated]
• Total surface	totalsurface
Superheater:
• Type	superheatertype
• Heating area	superheaterarea
Cylinders	cylindercount
Cylinder size	cylindersize
Front cylinder	frontcylindersize
Rear cylinder	rearcylindersize
High-pressure cylinder	hpcylindersize
Low-pressure cylinder	lpcylindersize
Piston stroke	pistonstroke
Cogwheel drive cylinder bore	cogwheelstoke
Cogwheel drive piston stroke	cogwheelstroke
Cylinder pressure	cylinderpressure
Valve gear	valvegear
Valve type	valvetype
Valve travel	valvetravel
Valve lap	valvelap
Valve lead	valvelead
Transmission	transmission
Transmission model	transmodel
Running steps	runningsteps
Running step switch	runningstepswitch
Gear ratio	gear ratio
MU working	multipleworking
Train control	traincontrol
Train heating	trainheating
Loco brake	locobrakes
Train brakes	trainbrakes
Auxiliary brake	auxbrake [deprecated]
Parking brake	parkingbrake [deprecated]
Train protection	trainprotection [deprecated]
Anti-skid protection	antiskid
Air tank cap.	reservoircap
Compressor	compressorcap
Exhauster	exhaustercap
Safety systems	safety
Couplers	coupling

Performance figures
Maximum speed	maxspeed
Indicated power	indicatedpower
Installed power	installedpower [deprecated]
Power output:
• Starting	poweroutput start
• 1 hour	poweroutput 1 hr
• Continuous	poweroutput cont
Power index	powerindex
Tractive effort:
• Starting	t/e starting
• 1 hour	t/e 1 hr
• Continuous	t/e continuous
Maximum incline	maxincline
Acceleration	acceleration
Deceleration	deceleration
Factor of adh.:
• Starting	f/adh starting
• 1 hour	f/adh 1 hr
• Continuous	f/adh continuous
Brakeforce	locobrakeforce
Dynamic brake peak effort	dynamicpeakeffort

Career
Operators	operator
Class	operatorclass
Power class	powerclass
Number in class	numinclass
Numbers	fleetnumbers
Official name	officialname
Nicknames	nicknames
Axle load class	axleloadclass
Locale	locale
Delivered	deliverydate
First run	firstrundate
Last run	lastrundate
Retired	retiredate
Withdrawn	withdrawndate
Preserved	preservedunits
Restored	restoredate
Scrapped	scrapdate
Current owner	currentowner
Disposition	disposition

notes

all 223 parameters

Type and origin
hatnote
Power type	powertype
Designer	designer
Builder	builder
Order number	ordernumber
Serial number	serialnumber
Model	buildmodel
Build date	builddate
Total produced	totalproduction
Rebuilder	rebuilder
Rebuild date	rebuilddate
Number rebuilt	numberrebuilt
Website	website

Specifications
Configuration:
• Whyte	whytetype
• AAR	aarwheels
• UIC	uicclass
• Commonwealth	Britishclass
• German	DRG type
Driver	driver
Gauge	gauge
Trucks	trucks
Bogies	bogies
Leading dia.	leadingdiameter
Driver dia.	driverdiameter
Coupled dia.	coupleddiameter
Wheel diameter	wheeldiameter
Trailing dia.	trailingdiameter
Tender wheels	tenderdiameter
Outer carrying wheel diameter	outerdiameter
Inner carrying wheel diameter	innerdiameter
Carrying wheel diameter	carrydiameter [deprecated]
Minimum curve	minimumcurve
Wheelbase	wheelbase
• Axle spacing (Asymmetrical)	wheelspacing
• Engine	engine total
• Leading	leading
• Drivers	drivers
• Coupled	coupled
• Trailing	trailing
• Truck	truck
• Bogie	bogie
• Tender	tender total
• Tender truck	tendertruck
• Tender bogie	tenderbogie
• Overall	overallwheelbase
• incl. tender	wheelbasewithtender
Rack system	racksystem
Driving cogwheels	drivingcogwheels
Braking cogwheels	brakingcogwheels
Cogwheel size	cogwheelsize
Pivot centres	pivotcentres
Pivot pitch	pivotpitch [deprecated]
Panto shoes	pantoshoecentres
Length:
• Over couplers	over couplers
• Over headstocks	over headstocks
• Over beams	over bufferbeams
• Over body	body
• Over buffers	over buffers
Width	width
Height:
• Pantograph	pantodown
• Body height	bodyonly
Frame type	frametype
Axle load	axleload
• Leading	leadingbogie/pony
• Coupled	coupled all
• 1st coupled	coupled 1
• 2nd coupled	coupled 2
• 3rd coupled	coupled 3
• 4th coupled	coupled 4
• 5th coupled	coupled 5
• 6th coupled	coupled 6
• 7th coupled	coupled 7
• 8th coupled	coupled 8
• Trailing	trail bogie/pony
• Tender bogie	tenderbogieload
• Tender axle	tenderaxle
Adhesive weight	weightondrivers
Empty weight	emptyweight
Working weight	[deprecated]
Service weight	serviceweight
Loco weight	locoweight
Tender weight	tenderweight
Total weight	locotenderweight
Tender type	tendertype
Fuel type	fueltype
Fuel capacity	fuelcap
Lubricant cap.	lubecap
Coolant cap.	coolantcap
Water cap.	watercap
Tender cap.	tendercap
Sandbox cap.	sandcap
Fuel consumption	consumption
Water consumption	watercons
Power supply	powersupply
Electric system/s	electricsystem
Current pickup(s)	collectionmethod
Traction batteries	tractionbatteries
Range	range
Capacity	capcity
Prime mover	primemover
RPM range	rpmrange
• RPM low idle	rpmrange low
• RPM idle	rpmrange idle
• Nominal RPM	rpmnominal [deprecated]
• Maximum RPM	rpmrange max
Engine type	enginetype
Aspiration	aspiration
Displacement	displacement
Alternator	alternator
Generator	generator
Traction motors	tractionmotors
• Rating 1 hour	t/m amps 1 hr
• Continuous	t/m amps cont
Head end power	headendpower
Firebox:
• Type	fireboxtype
• Grate area	firearea
Boiler:
• Model	boiler
• Type	boilertype
• Pitch	pitch
• Diameter	diameterinside
• Tube plates	lengthinside
• Small tubes	smalltubediameter
• Large tubes	largetubediameter
No. of heating tubes	heatingtubes [deprecated]
No. of smoke tubes	smoketubes [deprecated]
Heating tube length	heatingtubelength [deprecated]
Boiler pressure	boilerpressure
Safety valve	safetyvalvetype
Feedwater heater	feedwaterheater
Heating surface:
• Firebox	fireboxarea
• Radiative	radiativearea [deprecated]
• Tubes	tubearea
• Arch tubes	archarea
• Flues	fluearea
• Tubes and flues	tubesandflues
• Evaporative	evaporativearea [deprecated]
• Total surface	totalsurface
Superheater:
• Type	superheatertype
• Heating area	superheaterarea
Cylinders	cylindercount
Cylinder size	cylindersize
Front cylinder	frontcylindersize
Rear cylinder	rearcylindersize
High-pressure cylinder	hpcylindersize
Low-pressure cylinder	lpcylindersize
Piston stroke	pistonstroke
Cogwheel drive cylinder bore	cogwheelstoke
Cogwheel drive piston stroke	cogwheelstroke
Cylinder pressure	cylinderpressure
Valve gear	valvegear
Valve type	valvetype
Valve travel	valvetravel
Valve lap	valvelap
Valve lead	valvelead
Transmission	transmission
Transmission model	transmodel
Running steps	runningsteps
Running step switch	runningstepswitch
Gear ratio	gear ratio
MU working	multipleworking
Train control	traincontrol
Train heating	trainheating
Loco brake	locobrakes
Train brakes	trainbrakes
Auxiliary brake	auxbrake [deprecated]
Parking brake	parkingbrake [deprecated]
Train protection	trainprotection [deprecated]
Anti-skid protection	antiskid
Air tank cap.	reservoircap
Compressor	compressorcap
Exhauster	exhaustercap
Safety systems	safety
Couplers	coupling

Performance figures
Maximum speed	maxspeed
Indicated power	indicatedpower
Installed power	installedpower [deprecated]
Power output:
• Starting	poweroutput start
• 1 hour	poweroutput 1 hr
• Continuous	poweroutput cont
Power index	powerindex
Tractive effort:
• Starting	t/e starting
• 1 hour	t/e 1 hr
• Continuous	t/e continuous
Maximum incline	maxincline
Acceleration	acceleration
Deceleration	deceleration
Factor of adh.:
• Starting	f/adh starting
• 1 hour	f/adh 1 hr
• Continuous	f/adh continuous
Brakeforce	locobrakeforce
Dynamic brake peak effort	dynamicpeakeffort

Career
Operators	operator
Class	operatorclass
Power class	powerclass
Number in class	numinclass
Numbers	fleetnumbers
Official name	officialname
Nicknames	nicknames
Axle load class	axleloadclass
Locale	locale
Delivered	deliverydate
First run	firstrundate
Last run	lastrundate
Retired	retiredate
Withdrawn	withdrawndate
Preserved	preservedunits
Restored	restoredate
Scrapped	scrapdate
Current owner	currentowner
Disposition	disposition

notes

Length check

| length           = 
| over couplers    = 
| over bufferbeams = 
| body             = 
| pivotcentres     =

Side by side comparison

length #1 (length)

Specifications
Length	10m

length #1 (length)

Specifications
Length	10m

Side by side comparison

length #2 (body)

Specifications
Length:
• Over body	2m

length #2 (body)

Specifications
Length:
• Over body	2m

Side by side comparison

length #3 (length + body)

Specifications
Length:
• Over body	2m

length #3 (length + body)

Specifications
Length:
• Over body	2m

Side by side comparison

length #all

Specifications
Pivot centres	5m
Pivot pitch	5m
Length:
• Over couplers	2m
• Over headstocks	3m
• Over beams	3m
• Over body	4m
• Over buffers	3.3 m

length #all

Specifications
Pivot centres	5m
Pivot pitch	5m
Length:
• Over couplers	2m
• Over headstocks	3m
• Over beams	3m
• Over body	4m
• Over buffers	3.3 m

variants

Side by side comparison

length #all/not cpl

Specifications
Pivot centres	5m
Length:
• Over headstocks	3m
• Over body	4m

length #all/not cpl

Specifications
Pivot centres	5m
Length:
• Over headstocks	3m
• Over body	4m

Side by side comparison

length #all/not len

Specifications
Pivot centres	5m
Length:
• Over couplers	2m
• Over headstocks	3m
• Over body	4m
• Over buffers	3.3 m

length #all/not len

Specifications
Pivot centres	5m
Length:
• Over couplers	2m
• Over headstocks	3m
• Over body	4m
• Over buffers	3.3 m

Side by side comparison

length #all/not pivots

Specifications
Length:
• Over couplers	2m
• Over headstocks	3m
• Over body	4m
• Over buffers	3.3 m

length #all/not pivots

Specifications
Length:
• Over couplers	2m
• Over headstocks	3m
• Over body	4m
• Over buffers	3.3 m

Side by side comparison

length #all/not len, pivots

Specifications
Length:
• Over couplers	2m
• Over headstocks	3m
• Over body	4m
• Over buffers	3.3 m

length #all/not len, pivots

Specifications
Length:
• Over couplers	2m
• Over headstocks	3m
• Over body	4m
• Over buffers	3.3 m

Boiler area check

Side by side comparison

totalsurface only

Specifications
Feedwater heater	none
Heating surface	202 m²
Cylinders	Two

totalsurface only

Specifications
Feedwater heater	none
Heating surface	202 m²
Cylinders	Two

Side by side comparison

additional parameters

Specifications
Feedwater heater	none
Heating surface:
• Firebox	2 m²
• Tubes and flues	200 m²
• Total surface	202 m²
Cylinders	Two

additional parameters

Specifications
Feedwater heater	none
Heating surface:
• Firebox	2 m²
• Tubes and flues	200 m²
• Total surface	202 m²
Cylinders	Two

Side by side comparison

totalsurface missing

Specifications
Feedwater heater	none
Heating surface:
• Firebox	2 m²
• Tubes and flues	200 m²
Cylinders	Two

totalsurface missing

Specifications
Feedwater heater	none
Heating surface:
• Firebox	2 m²
• Tubes and flues	200 m²
Cylinders	Two

Side by side comparison

section missing
(false positive test)

Specifications
Feedwater heater	none
Cylinders	Two

section missing
(false positive test)

Specifications
Feedwater heater	none
Cylinders	Two

EMD GP30

Side by side comparison

EMD GP30

WC 715 at the National Railroad Museum in Green Bay, WI

Type and origin
Power type	Diesel-electric
Builder	GM Electro-Motive Division (EMD) General Motors Diesel (GMD)
Model	GP30
Build date	July 1961 – November 1963
Total produced	948

Specifications
Configuration:
• AAR	B-B
• UIC	Bo′Bo′
Length	56 ft 2 in (17.12 m)
Loco weight	253,000 lb (115,000 kg)
Fuel capacity	Standard: 1,700 US gal (6,400 L; 1,400 imp gal), Optional: 2,600 US gallons (9,800 L; 2,200 imp gal)
Lubricant cap.	200 US gal (760 L; 170 imp gal)
Coolant cap.	240 US gal (910 L; 200 imp gal)
Sandbox cap.	18 cu ft (0.51 m³)
Prime mover	EMD 567D3
Engine type	Two-stroke V16 diesel
Aspiration	Turbocharger
Displacement	9,072 cu in (148.66 L)
Generator	EMD D-32
Traction motors	EMD D67B (4)
Cylinders	16
Cylinder size	8+1⁄2 in × 10 in (216 mm × 254 mm)
Transmission	Diesel electric
Loco brake	Schedule 26L Straight air, optional: dynamic

Performance figures
Maximum speed	78 mph (126 km/h)
Power output	2,250 hp (1,680 kW)
Tractive effort	63,375 lbf (281.9 kN)

Career
Locale	North America

EMD GP30

WC 715 at the National Railroad Museum in Green Bay, WI

Type and origin
Power type	Diesel-electric
Builder	GM Electro-Motive Division (EMD) General Motors Diesel (GMD)
Model	GP30
Build date	July 1961 – November 1963
Total produced	948

Specifications
Configuration:
• AAR	B-B
• UIC	Bo′Bo′
Length	56 ft 2 in (17.12 m)
Loco weight	253,000 lb (115,000 kg)
Fuel capacity	Standard: 1,700 US gal (6,400 L; 1,400 imp gal), Optional: 2,600 US gallons (9,800 L; 2,200 imp gal)
Lubricant cap.	200 US gal (760 L; 170 imp gal)
Coolant cap.	240 US gal (910 L; 200 imp gal)
Sandbox cap.	18 cu ft (0.51 m³)
Prime mover	EMD 567D3
Engine type	Two-stroke V16 diesel
Aspiration	Turbocharger
Displacement	9,072 cu in (148.66 L)
Generator	EMD D-32
Traction motors	EMD D67B (4)
Cylinders	16
Cylinder size	8+1⁄2 in × 10 in (216 mm × 254 mm)
Transmission	Diesel electric
Loco brake	Schedule 26L Straight air, optional: dynamic

Performance figures
Maximum speed	78 mph (126 km/h)
Power output	2,250 hp (1,680 kW)
Tractive effort	63,375 lbf (281.9 kN)

Career
Locale	North America

John Bull

Side by side comparison

John Bull

John Bull, c. 1895

Type and origin
Power type	Steam
Builder	Robert Stephenson and Company
Build date	1831 (1831)

Specifications
Configuration:
• Whyte	4-2-0 (built by Stephenson as an 0-4-0)
• UIC	1'1A (built as B)
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	4 ft 6 in (1.37 m)
Wheelbase	4 ft 11 in (1.50 m) between driving axles
Length	14 ft 9 in (4.50 m) — frame
Width	6 ft 3 in (1.91 m) — frame
Loco weight	10 ton
Firebox:
• Grate area	10.07 square feet (0.936 m²)
Boiler	2 ft 6 in (0.76 m) diameter × 6 ft 9 in (2.06 m) length
Heating surface	213 sq ft (19.8 m²)
Cylinder size	9 in (23 cm) diameter × 20 in (51 cm) stroke

Career
Operators	Camden and Amboy Railroad, Pennsylvania Railroad (initial preservation)
Numbers	1
Official name	Stevens (after C&A president Robert L. Stevens)
Delivered	4 September 1831
First run	15 September 1831
Retired	1866
Restored	15 September 1981
Current owner	Smithsonian Institution
Disposition	Static display at the National Museum of American History

John Bull

John Bull, c. 1895

Type and origin
Power type	Steam
Builder	Robert Stephenson and Company
Build date	1831 (1831)

Specifications
Configuration:
• Whyte	4-2-0 (built by Stephenson as an 0-4-0)
• UIC	1'1A (built as B)
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	4 ft 6 in (1.37 m)
Wheelbase	4 ft 11 in (1.50 m) between driving axles
Length	14 ft 9 in (4.50 m) — frame
Width	6 ft 3 in (1.91 m) — frame
Loco weight	10 ton
Firebox:
• Grate area	10.07 square feet (0.936 m²)
Boiler	2 ft 6 in (0.76 m) diameter × 6 ft 9 in (2.06 m) length
Heating surface	213 sq ft (19.8 m²)
Cylinder size	9 in (23 cm) diameter × 20 in (51 cm) stroke

Career
Operators	Camden and Amboy Railroad, Pennsylvania Railroad (initial preservation)
Numbers	1
Official name	Stevens (after C&A president Robert L. Stevens)
Delivered	4 September 1831
First run	15 September 1831
Retired	1866
Restored	15 September 1981
Current owner	Smithsonian Institution
Disposition	Static display at the National Museum of American History

South African Class 4E

Side by side comparison

South African Class 4E

No. E238 at the Salt River Depot, Cape Town, 7 January 1966

Type and origin
Power type	Electric
Designer	General Electric Company
Builder	North British Locomotive Company
Serial number	26859-26898
Model	GEC 4E
Build date	1952-1953
Total produced	40

Specifications
Configuration:
• AAR	1-C+C-1
• UIC	(1Co)(Co1)
Gauge	3 ft 6 in (1,067 mm) Cape gauge
Leading dia.	762 mm (30 in)
Wheel diameter	1,295 mm (51 in)
Wheelbase	18,390 mm (60 ft 4 in)
• Axle spacing (Asymmetrical)	1-2: 2,337 mm (7 ft 8 in) 2-3: 2,286 mm (7 ft 6 in)
• Bogie	6,833 mm (22 ft 5 in)
Pivot centres	10,795 mm (35 ft 5 in)
Panto shoes	14,122 mm (46 ft 4 in)
Length:
• Over couplers	21,844 mm (71 ft 8 in)
Height:
• Pantograph	4,140 mm (13 ft 7 in)
• Body height	3,924 mm (12 ft 10 in)
Axle load	21,845 kg (48,160 lb)
• Leading	13,209 kg (29,121 lb)
Adhesive weight	131,070 kg (288,960 lb)
Loco weight	157,488 kg (347,202 lb)
Power supply	Catenary
Current pickup(s)	Pantographs
Traction motors	Six GEC WT580
• Rating 1 hour	377 kW (506 hp)
• Continuous	313 kW (420 hp)
Gear ratio	21/75
Loco brake	Regenerative
Train brakes	Air & Vacuum
Couplers	AAR knuckle

Performance figures
Maximum speed	97 km/h (60 mph)
Power output:
• 1 hour	2,262 kW (3,033 hp)
• Continuous	1,878 kW (2,518 hp)
Tractive effort:
• Starting	322 kN (72,000 lbf)
• 1 hour	185 kN (42,000 lbf)
• Continuous	141 kN (32,000 lbf)

Career
Operators	South African Railways
Class	Class 4E
Power class	3 kV DC
Number in class	40
Numbers	E219-E258
Nicknames	Groen Mamba (Green Mamba) Groot Mamba (Large Mamba)
Delivered	1952-1954
First run	1952

South African Class 4E

No. E238 at the Salt River Depot, Cape Town, 7 January 1966

Type and origin
Power type	Electric
Designer	General Electric Company
Builder	North British Locomotive Company
Serial number	26859-26898
Model	GEC 4E
Build date	1952-1953
Total produced	40

Specifications
Configuration:
• AAR	1-C+C-1
• UIC	(1Co)(Co1)
Gauge	3 ft 6 in (1,067 mm) Cape gauge
Leading dia.	762 mm (30 in)
Wheel diameter	1,295 mm (51 in)
Wheelbase	18,390 mm (60 ft 4 in)
• Axle spacing (Asymmetrical)	1-2: 2,337 mm (7 ft 8 in) 2-3: 2,286 mm (7 ft 6 in)
• Bogie	6,833 mm (22 ft 5 in)
Pivot centres	10,795 mm (35 ft 5 in)
Panto shoes	14,122 mm (46 ft 4 in)
Length:
• Over couplers	21,844 mm (71 ft 8 in)
Height:
• Pantograph	4,140 mm (13 ft 7 in)
• Body height	3,924 mm (12 ft 10 in)
Axle load	21,845 kg (48,160 lb)
• Leading	13,209 kg (29,121 lb)
Adhesive weight	131,070 kg (288,960 lb)
Loco weight	157,488 kg (347,202 lb)
Power supply	Catenary
Current pickup(s)	Pantographs
Traction motors	Six GEC WT580
• Rating 1 hour	377 kW (506 hp)
• Continuous	313 kW (420 hp)
Gear ratio	21/75
Loco brake	Regenerative
Train brakes	Air & Vacuum
Couplers	AAR knuckle

Performance figures
Maximum speed	97 km/h (60 mph)
Power output:
• 1 hour	2,262 kW (3,033 hp)
• Continuous	1,878 kW (2,518 hp)
Tractive effort:
• Starting	322 kN (72,000 lbf)
• 1 hour	185 kN (42,000 lbf)
• Continuous	141 kN (32,000 lbf)

Career
Operators	South African Railways
Class	Class 4E
Power class	3 kV DC
Number in class	40
Numbers	E219-E258
Nicknames	Groen Mamba (Green Mamba) Groot Mamba (Large Mamba)
Delivered	1952-1954
First run	1952

cylindersize split

Side by side comparison

John Bull

John Bull, c. 1895

Type and origin
Power type	Steam
Builder	Robert Stephenson and Company
Build date	1831 (1831)

Specifications
Configuration:
• Whyte	4-2-0 (built by Stephenson as an 0-4-0)
• UIC	1'1A (built as B)
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	4 ft 6 in (1.37 m)
Wheelbase	4 ft 11 in (1.50 m) between driving axles
Length	14 ft 9 in (4.50 m) — frame
Width	6 ft 3 in (1.91 m) — frame
Loco weight	10 ton
Firebox:
• Grate area	10.07 square feet (0.936 m²)
Boiler	2 ft 6 in (0.76 m) diameter × 6 ft 9 in (2.06 m) length
Heating surface	213 sq ft (19.8 m²)
Cylinder size	old 9 in (23 cm) diameter × 20 in (51 cm) stroke
Piston stroke	20 in (51 cm)

Career
Operators	Camden and Amboy Railroad, Pennsylvania Railroad (initial preservation)
Numbers	1
Official name	Stevens (after C&A president Robert L. Stevens)
Delivered	4 September 1831
First run	15 September 1831
Retired	1866
Restored	15 September 1981
Current owner	Smithsonian Institution
Disposition	Static display at the National Museum of American History

John Bull

John Bull, c. 1895

Type and origin
Power type	Steam
Builder	Robert Stephenson and Company
Build date	1831 (1831)

Specifications
Configuration:
• Whyte	4-2-0 (built by Stephenson as an 0-4-0)
• UIC	1'1A (built as B)
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	4 ft 6 in (1.37 m)
Wheelbase	4 ft 11 in (1.50 m) between driving axles
Length	14 ft 9 in (4.50 m) — frame
Width	6 ft 3 in (1.91 m) — frame
Loco weight	10 ton
Firebox:
• Grate area	10.07 square feet (0.936 m²)
Boiler	2 ft 6 in (0.76 m) diameter × 6 ft 9 in (2.06 m) length
Heating surface	213 sq ft (19.8 m²)
Cylinder size	old 9 in (23 cm) diameter × 20 in (51 cm) stroke
Piston stroke	20 in (51 cm)

Career
Operators	Camden and Amboy Railroad, Pennsylvania Railroad (initial preservation)
Numbers	1
Official name	Stevens (after C&A president Robert L. Stevens)
Delivered	4 September 1831
First run	15 September 1831
Retired	1866
Restored	15 September 1981
Current owner	Smithsonian Institution
Disposition	Static display at the National Museum of American History