Play Video
1
Western Steam Power "Big Boy
Western Steam Power "Big Boy's in Action"
::2011/01/12::
Play Video
2
Union Pacific 4-8-8-4 "Big Boy" Steam Engine Footage
Union Pacific 4-8-8-4 "Big Boy" Steam Engine Footage
::2011/01/16::
Play Video
3
Union Pacific Big Boy 4005 (4-8-8-4)
Union Pacific Big Boy 4005 (4-8-8-4)
::2011/09/17::
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4
Broad Way Limited BLI Big Boy Union Pacific 4-8-8-4 Part 2
Broad Way Limited BLI Big Boy Union Pacific 4-8-8-4 Part 2
::2012/06/03::
Play Video
5
LEGO TRAIN BIG BOY 4-8-8-4 INSTRUCTIONS
LEGO TRAIN BIG BOY 4-8-8-4 INSTRUCTIONS
::2013/08/24::
Play Video
6
Running of Lionel
Running of Lionel's J.L.C Union Pacific 4-8-8-4 Big Boy #4024 with Legacy
::2010/09/12::
Play Video
7
2013 Athearn N Scale Big Boy 4-8-8-4 Review
2013 Athearn N Scale Big Boy 4-8-8-4 Review
::2013/04/19::
Play Video
8
Union Pacific "Big Boy" 4-8-8-4 Steam Locomotive - N scale by Athearn
Union Pacific "Big Boy" 4-8-8-4 Steam Locomotive - N scale by Athearn
::2013/01/27::
Play Video
9
MTH Premier UP Big Boy (4-8-8-4) O-Gauge Steam Locomotive
MTH Premier UP Big Boy (4-8-8-4) O-Gauge Steam Locomotive
::2007/03/21::
Play Video
10
MTH Union Pacific Big Boy 4-8-8-4 #4016
MTH Union Pacific Big Boy 4-8-8-4 #4016
::2013/09/20::
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11
Broadway Limited 4-8-4 Northern #3751 ATSF review (2nd run) HO Scale Paragon 2
Broadway Limited 4-8-4 Northern #3751 ATSF review (2nd run) HO Scale Paragon 2
::2013/06/05::
Play Video
12
Bachmann EM-1 2-8-8-4 Yellowstone with SoundTraxx Tsunami
Bachmann EM-1 2-8-8-4 Yellowstone with SoundTraxx Tsunami
::2012/11/19::
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13
1941 Union Pacific Big Boy Locomotive #4006
1941 Union Pacific Big Boy Locomotive #4006
::2011/08/27::
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14
ACCUCRAFT  UP 4-8-8-4 BIG BOY, LIVE STEAM
ACCUCRAFT UP 4-8-8-4 BIG BOY, LIVE STEAM
::2012/07/31::
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15
Precision Craft Models 4-8-8-4 Union Pacific Big Boy#4002 Steam Locomotive HO Scale
Precision Craft Models 4-8-8-4 Union Pacific Big Boy#4002 Steam Locomotive HO Scale
::2012/11/29::
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16
HO Scale 4-8-8-4 "Big Boy"
HO Scale 4-8-8-4 "Big Boy"
::2008/07/31::
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17
Union Pacific Big Boy 4-8-8-4, Athearn N scale
Union Pacific Big Boy 4-8-8-4, Athearn N scale
::2012/04/23::
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18
Review of the Athearn Genesis Northern FEF 4-8-4 # 844 Steam Engine
Review of the Athearn Genesis Northern FEF 4-8-4 # 844 Steam Engine
::2010/10/10::
Play Video
19
lego 4-8-8-4 big boy 1
lego 4-8-8-4 big boy 1
::2011/12/09::
Play Video
20
O Gauge Union Pacific Big Boy 4-8-8-4 Joshua Lionel Cowen JLC vs differences Lionmaster
O Gauge Union Pacific Big Boy 4-8-8-4 Joshua Lionel Cowen JLC vs differences Lionmaster
::2013/01/12::
Play Video
21
BLI Blue Line Custom 4-8-8-4 Big Boy
BLI Blue Line Custom 4-8-8-4 Big Boy
::2010/01/15::
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22
Union Pacific Big Boy 4-8-8-4 #4014 makes the shuttle move to West Colton 1/26/14
Union Pacific Big Boy 4-8-8-4 #4014 makes the shuttle move to West Colton 1/26/14
::2014/01/27::
Play Video
23
Rail King 4-8-8-4  Imperial Big Boy.   Proto-Sound 3
Rail King 4-8-8-4 Imperial Big Boy. Proto-Sound 3
::2013/05/09::
Play Video
24
BLI Broadway Limited Union Pacific Big Boy 4-8-8-4
BLI Broadway Limited Union Pacific Big Boy 4-8-8-4
::2011/01/10::
Play Video
25
MTH HO 4 8 8 4 BIG BOY UP4005 ♪DCS SOUND♪
MTH HO 4 8 8 4 BIG BOY UP4005 ♪DCS SOUND♪
::2013/10/20::
Play Video
26
HO UP 4-8-8-4 Big Boy  Broadway Limited
HO UP 4-8-8-4 Big Boy Broadway Limited
::2012/10/06::
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27
4-8-8-4 UP Big Boy with Circus Train - Monroe Train Show
4-8-8-4 UP Big Boy with Circus Train - Monroe Train Show
::2013/02/09::
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28
UNION  PACIFIC  BIGBOY 4-8-8-4 (#4014)  ATHEARN  N-SCALE 走行動画
UNION PACIFIC BIGBOY 4-8-8-4 (#4014) ATHEARN N-SCALE 走行動画
::2013/07/14::
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29
Big Boy 4-8-8-4 N-scale
Big Boy 4-8-8-4 N-scale
::2008/04/27::
Play Video
30
N scale Con-cor Rivarossi 4-8-8-4 Big Boy
N scale Con-cor Rivarossi 4-8-8-4 Big Boy
::2012/01/11::
Play Video
31
MTH 2-8-8-4 DMIR Yellowstone Set
MTH 2-8-8-4 DMIR Yellowstone Set
::2010/08/31::
Play Video
32
Marcusville 4-8-8-4 Big Boy 06-01-14
Marcusville 4-8-8-4 Big Boy 06-01-14
::2014/06/01::
Play Video
33
lego 4-8-8-4 big boy 2
lego 4-8-8-4 big boy 2
::2011/12/09::
Play Video
34
Athearn N Scale Big Boy 4-8-8-4
Athearn N Scale Big Boy 4-8-8-4
::2013/04/24::
Play Video
35
MTH Premier UP Big Boys (4-8-8-4) O-Gauge Steam Locomotives
MTH Premier UP Big Boys (4-8-8-4) O-Gauge Steam Locomotives
::2007/03/16::
Play Video
36
K-Line Big Boy 4-8-8-4
K-Line Big Boy 4-8-8-4
::2011/12/31::
Play Video
37
MTH Premier UP Big Boy (4-8-8-4) O-Gauge Steam Locomotive with the Caboose Train in True HD 1080p
MTH Premier UP Big Boy (4-8-8-4) O-Gauge Steam Locomotive with the Caboose Train in True HD 1080p
::2010/11/03::
Play Video
38
Lego big boy 4-8-8-4  2013
Lego big boy 4-8-8-4 2013
::2013/10/16::
Play Video
39
UP 4015 4-8-8-4 Big Boy (Trix, ESU) Test
UP 4015 4-8-8-4 Big Boy (Trix, ESU) Test
::2009/05/23::
Play Video
40
MY MTH   BIG BOY 4-8-8-4
MY MTH BIG BOY 4-8-8-4
::2014/01/15::
Play Video
41
HO Scale Athearn Genesis 4-8-8-4 Union Pacific Big Boy
HO Scale Athearn Genesis 4-8-8-4 Union Pacific Big Boy
::2012/06/15::
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42
lego treno big boy  4-8-8-4 in movimento
lego treno big boy 4-8-8-4 in movimento
::2014/02/01::
Play Video
43
Train Simulator 2013 Big Boy 4-8-8-4
Train Simulator 2013 Big Boy 4-8-8-4
::2012/10/19::
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44
Athearn 4-8-8-4 BigBoy UP
Athearn 4-8-8-4 BigBoy UP
::2008/03/03::
Play Video
45
MTH Premier UP BIg Boy (4-8-8-4) O-Gauge Steam Locomotives Double-Headed in True HD 1080p
MTH Premier UP BIg Boy (4-8-8-4) O-Gauge Steam Locomotives Double-Headed in True HD 1080p
::2010/05/31::
Play Video
46
OFFICIAL Paragon2 ATSF 4-8-4, HO Promo Video by Broadway Limited Imports, LLC
OFFICIAL Paragon2 ATSF 4-8-4, HO Promo Video by Broadway Limited Imports, LLC
::2013/08/29::
Play Video
47
Lionel 6-28029 Union Pacific BIG BOY 4-8-8-4 TMCC
Lionel 6-28029 Union Pacific BIG BOY 4-8-8-4 TMCC
::2010/12/31::
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48
Athearn Genesis "Big Boy" 4-8-8-4
Athearn Genesis "Big Boy" 4-8-8-4
::2010/05/14::
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49
Rivarossi Bigboy 4-8-8-4
Rivarossi Bigboy 4-8-8-4
::2014/09/17::
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50
Review of Lionel
Review of Lionel's J.L.C Union Pacific 4-8-8-4 Big Boy #4024 with Legacy
::2010/09/12::
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RESULTS [51 .. 101]
From Wikipedia, the free encyclopedia
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A Big Boy locomotive. This example is Union Pacific 4023.

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

Other equivalent classifications are:
UIC classification: 2DD2 (also known as German classification and Italian classification)
French classification: 240+042
Turkish classification: 46+46
Swiss classification: 4/6+4/6

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 survive, all on static public display at various sites in the USA. 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 monster 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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