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ebay unboxing ho brass trains haul big boy 4-8-8-4
ebay unboxing ho brass trains haul big boy 4-8-8-4
Published: 2016/07/31
Channel: Kevin C
Kline 4015 4-8-8-4 bigboy steam engine with Lionel aluminum Union Pacific passenger cars
Kline 4015 4-8-8-4 bigboy steam engine with Lionel aluminum Union Pacific passenger cars
Published: 2017/01/21
Channel: Mikes trains O gauge
Union Pacific 4-8-8-4 Big Boy steam locomotive #4014 move South Fontana 1/26/14
Union Pacific 4-8-8-4 Big Boy steam locomotive #4014 move South Fontana 1/26/14
Published: 2014/01/28
Channel: Railfan1000
Big Boy
Big Boy
Published: 2006/09/16
Channel: ChronoStorm
Visiting Kenefick Park in Omaha Nebraska ft. UP 4023 (4-8-8-4 Steam Loco) and UP 6900 (DDA40X)
Visiting Kenefick Park in Omaha Nebraska ft. UP 4023 (4-8-8-4 Steam Loco) and UP 6900 (DDA40X)
Published: 2013/07/30
Channel: crail4ever
UP 4-8-8-4 Ebay Test Run 2015-10-17
UP 4-8-8-4 Ebay Test Run 2015-10-17
Published: 2015/10/17
Channel: Steve Huminski
RIDE ON THE PLOWMANS MINIATURE GARDEN RAILWAY WITH UNION PACIFIC 4-8-8-4
RIDE ON THE PLOWMANS MINIATURE GARDEN RAILWAY WITH UNION PACIFIC 4-8-8-4 'BIG BOY' No. 4008
Published: 2016/04/12
Channel: Classic Traction
Lego big boy 4-8-8-4  2013
Lego big boy 4-8-8-4 2013
Published: 2013/10/16
Channel: graziano martini
Swiss Vapeur 2011: class "A" Challenger 2-6-6-4 from the Norfolk and Western RR
Swiss Vapeur 2011: class "A" Challenger 2-6-6-4 from the Norfolk and Western RR
Published: 2011/07/21
Channel: fbuff2000
Athearn Nscal 4-8-8-4 BIGBOY DC control test
Athearn Nscal 4-8-8-4 BIGBOY DC control test
Published: 2015/05/16
Channel: skyline2000gta
Guided Breathing Mantra (4 - 8 - 8 - 8) Pranayama Yoga Breathing Exercise (Level 4 - Volume 14)
Guided Breathing Mantra (4 - 8 - 8 - 8) Pranayama Yoga Breathing Exercise (Level 4 - Volume 14)
Published: 2015/09/21
Channel: Breathing Mantra
Union Pacific Giant  4-8-8-4 Big Boy 4014 at Grand Ave Bridge Diamond Bar. 1/26/14
Union Pacific Giant 4-8-8-4 Big Boy 4014 at Grand Ave Bridge Diamond Bar. 1/26/14
Published: 2014/01/28
Channel: Railfan1000
Big boy 4-8-8-4 .3gp
Big boy 4-8-8-4 .3gp
Published: 2011/12/12
Channel: jack58580824
lego treno big boy 4-8-8-4
lego treno big boy 4-8-8-4
Published: 2014/02/01
Channel: graziano martini
Guided Breathing Mantra (4-8-8) Pranayama Yoga Breathing Exercise Level 3 Vol 23
Guided Breathing Mantra (4-8-8) Pranayama Yoga Breathing Exercise Level 3 Vol 23
Published: 2015/10/04
Channel: Breathing Mantra
Tenshodo Big Boy 4-8-8-4 Union Pacific 4000 Runs Well Brass HO Japan PFM UP H.O.
Tenshodo Big Boy 4-8-8-4 Union Pacific 4000 Runs Well Brass HO Japan PFM UP H.O.
Published: 2013/07/26
Channel: Kevin C
A set of (4) MDC Roundhouse Denver & Rio Grande Ore Cars for sale on eBay
A set of (4) MDC Roundhouse Denver & Rio Grande Ore Cars for sale on eBay
Published: 2017/06/12
Channel: dennissirrine
Modeling a train: 4000-class 4-8-8-4  Blender timelapse part 1
Modeling a train: 4000-class 4-8-8-4 Blender timelapse part 1
Published: 2017/07/23
Channel: Nashman222
Brass HO Tenshodo Big Boy 4-8-8-4 Union Pacific 4000 Ebay Sale ~
Brass HO Tenshodo Big Boy 4-8-8-4 Union Pacific 4000 Ebay Sale ~
Published: 2013/03/29
Channel: Kevin C
Union Pacific 4 8 8 4 UP4016 F4 PFA sound
Union Pacific 4 8 8 4 UP4016 F4 PFA sound
Published: 2014/06/16
Channel: kishamodels
Union Pacific 4-8-8-4 Big Boy with Tsunami sound
Union Pacific 4-8-8-4 Big Boy with Tsunami sound
Published: 2012/10/09
Channel: 15RSD
Union Pacific 4006 Big Boy 4-8-8-4 HO Scale - Amherst Railway Society 2014 Railroad Hobby Show
Union Pacific 4006 Big Boy 4-8-8-4 HO Scale - Amherst Railway Society 2014 Railroad Hobby Show
Published: 2014/01/28
Channel: novelyo
محمد عبده زفة حجازيه الصلاة على الممجد 5 5 4 8 9 9 5 5 05
محمد عبده زفة حجازيه الصلاة على الممجد 5 5 4 8 9 9 5 5 05
Published: 2012/11/27
Channel: afra7lena
MTH O Scale  fall 2017
MTH O Scale fall 2017
Published: 2017/09/14
Channel: CN Rail Roads Of fox River Wisconsin
Athearn GENESIS Big Boy 4-8-8-4
Athearn GENESIS Big Boy 4-8-8-4
Published: 2010/09/06
Channel: ETRAINMOVIE
HO dcc TRIX Union Pacific Big Boy 4015 4-8-8-4 with ESU sound with string of TRIX cars.
HO dcc TRIX Union Pacific Big Boy 4015 4-8-8-4 with ESU sound with string of TRIX cars.
Published: 2010/03/19
Channel: Bastiaan Blinksma
paragon cab-forward 4-8-8-2
paragon cab-forward 4-8-8-2
Published: 2011/04/15
Channel: soptrain
Canton Historical Society HO Trains Big Boy 2-8-8-4 & Niagara 4-8-4 Steam Engines
Canton Historical Society HO Trains Big Boy 2-8-8-4 & Niagara 4-8-4 Steam Engines
Published: 2013/04/19
Channel: jazzbutterworth
花月園 4-8-8-4 BIGBOY HO train UP HW passenger car
花月園 4-8-8-4 BIGBOY HO train UP HW passenger car
Published: 2010/01/31
Channel: DMC12DELOREAN
HO MTH 4 8 8 4 BIG BOY UP#4005 ♪DCS SOUND♪B
HO MTH 4 8 8 4 BIG BOY UP#4005 ♪DCS SOUND♪B
Published: 2016/01/25
Channel: kishamodels
N 4 8 8 2 Cab Forward special ♪DCC SOUND♪
N 4 8 8 2 Cab Forward special ♪DCC SOUND♪
Published: 2014/08/13
Channel: kishamodels
4-8-8-4 Big Boy Locomotive 蒸汽火車頭
4-8-8-4 Big Boy Locomotive 蒸汽火車頭
Published: 2017/08/18
Channel: BotFeeder Filament
Simple Pranayama Breathing Exercise: 4-8 breathing
Simple Pranayama Breathing Exercise: 4-8 breathing
Published: 2009/01/18
Channel: Greg de Vries
Union Pacific 4 8 8 4 UP4005 ♪DCS SOUND♪
Union Pacific 4 8 8 4 UP4005 ♪DCS SOUND♪
Published: 2014/06/16
Channel: kishamodels
UP Big Boy 4014 Leaves Pomona, CA Part Four
UP Big Boy 4014 Leaves Pomona, CA Part Four
Published: 2014/01/27
Channel: altosax18
Union Pacific Big Boy 4014 moves to West Colton 1-26-14
Union Pacific Big Boy 4014 moves to West Colton 1-26-14
Published: 2014/01/28
Channel: theUP844
Athearn 4-8-8-4 Big_Boy音效
Athearn 4-8-8-4 Big_Boy音效
Published: 2013/04/22
Channel: Yiman Chang
Lionel Legacy 6-11104 UP Big Boy # 4014 kgtrains
Lionel Legacy 6-11104 UP Big Boy # 4014 kgtrains
Published: 2010/06/24
Channel: kgtrains
055043-HO Brass Model Train - Hallmark 4-8-8-4 Centipede DR-12-8-1500 Diesel Engine - Late Run
055043-HO Brass Model Train - Hallmark 4-8-8-4 Centipede DR-12-8-1500 Diesel Engine - Late Run
Published: 2015/07/21
Channel: BRASSTRAINSvideo
BigBoyLocomotive
BigBoyLocomotive
Published: 2015/06/13
Channel: BotFeeder Filament
HO MTH 4 8 8 2 CAB FORWARD SPL#4144 ♪DCS SOUND♪B
HO MTH 4 8 8 2 CAB FORWARD SPL#4144 ♪DCS SOUND♪B
Published: 2016/01/16
Channel: kishamodels
Review: MTH HO 611 Class J Loco Spirit of Roanoke Proto Sound 3.0!
Review: MTH HO 611 Class J Loco Spirit of Roanoke Proto Sound 3.0!
Published: 2017/09/13
Channel: jlwii2000
Modellbahn Spur N - Teil 9 / Minitrix BR 03 Clubmodell
Modellbahn Spur N - Teil 9 / Minitrix BR 03 Clubmodell
Published: 2017/09/11
Channel: Züge und Loks - Spur N
Mass Effect™: Andromeda In a Wall
Mass Effect™: Andromeda In a Wall
Published: 2017/09/17
Channel: UP_4-8-8-4
Mass Effect™: Andromeda Raiders
Mass Effect™: Andromeda Raiders
Published: 2017/09/17
Channel: UP_4-8-8-4
Mass Effect™: Andromeda Dance Destined Dance!
Mass Effect™: Andromeda Dance Destined Dance!
Published: 2017/09/17
Channel: UP_4-8-8-4
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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A Big Boy locomotive. This example is Union Pacific 4023.

A 4-8-8-4 in the Whyte notation for the classification of steam locomotives by wheel arrangement, is a locomotive with a four-wheel leading truck, two sets of eight driving wheels, and a four-wheel trailing truck. These are commonly known as "Union Pacific Big Boys".

Other equivalent classifications are:

The equivalent UIC classification is refined to '(2′D)D2′' for Mallet locomotives.

4-8-8-4 Big Boys were only produced for the Union Pacific Railroad. Twenty-five such engines were built between 1941 and 1944, numbered 4000 to 4024. Eight of these locomotives survive, all on static public display at various sites in the United States. Union Pacific has announced plans to restore No. 4014 to operation for use in mainline excursion service. No. 4014 is expected to be operational by 2019.[1]

The UP Big Boys were an expansion of the 4-6-6-4 "Challenger" type articulated locomotive. Although their wheels were an inch (25 mm) smaller than those of the Challengers, they were still able to sustain high speeds. Adding four driving wheels increased the pulling power of the locomotive and reduced the need for helper locomotives over steep grades.

Other American railroads considered buying 4-8-8-4s, including the Western Pacific Railroad, which already rostered large 2-8-8-2s and 4-6-6-4s, but diesel locomotives were gaining popularity and soon were able to displace these Big Boy locomotives.

External links[edit]

References[edit]

  1. ^ Trains Magazine. "Union Pacific Big Boy: Rebirth of a Legend". Retrieved 22 October 2013. 


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