Big Boy

Big Boy
an articulated steam locomotive having a four-wheeled front truck, one section of eight driving wheels, a second section of eight driving wheels, and a four-wheeled rear truck. See table under Whyte classification.

* * *

      one of the largest and most powerful types of steam locomotives ever built. Designed primarily to handle heavy freight traffic in the United States during World War II, 25 Big Boys were produced from 1941 to 1944 exclusively for the Union Pacific Railroad (Union Pacific Railroad Company). They were gradually replaced by the diesel-electric locomotive; the last one was taken out of regular service in 1959.

      The Big Boy along with its tender weighed about 604 tons and measured more than 40 m (132 feet) in length. It had a maximum power capacity of more than 6,000 horsepower and could exert 135,400 pounds of tractive force. The locomotive could haul a 3,600-ton train unassisted up a 1.14 percent grade, such as was found on a stretch of Union Pacific track in the Wasatch Mountains. It could achieve a speed of 112 km (70 miles) per hour pulling freight on level track.

      The Big Boy had an articulated design; the frame of the front engine was hinge-connected to the rear engine under a single boiler. Its wheel arrangement was designated 4-8-8-4—i.e., a set of 4 pilot wheels led a set of 8 coupled driving wheels, which were compounded by another set of 8 coupled drivers, with 4 trailing wheels.

* * *


Universalium. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Big Boy — steht für: die Lokomotive der UP Klasse 4000 der Union Pacific Railroad Arthur Crudup, genannt Arthur „Big Boy“ Crudup, Bluesgitarrist und Sänger Big Boy (Rapper), ein Rapper aus Puerto Rico, bürgerlich Gustavo Roy Díaz Alphonse Big Boy Caprice,… …   Deutsch Wikipedia

  • Big Boy — Saltar a navegación, búsqueda Gustavo Roy Díaz (1976 en Santurce, Puerto Rico), conocido publicamente como Big Boy, es unos de los primeros cantantes del movimiento del hip hop latino. Aunque este cantante no solo incursionó en el género del… …   Wikipedia Español

  • big boy — (izg. bȉg bȏj) m DEFINICIJA sport pom. balonsko ili posebno krojeno prednje jedro slično spinakeru ETIMOLOGIJA engl …   Hrvatski jezični portal

  • Big Boy — The name Big Boy has been applied to: * Big Boy (restaurant), an American restaurant chain * Union Pacific Big Boy, a steam locomotive * Big Boy (artist), Puerto Rican hip hop/reggaeton artist * nickname of Arthur Crudup (1905 1976), American… …   Wikipedia

  • Big Boy — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Big Boy, locomotive à vapeur américaine articulée de type 240 042. Big Boy, rappeur ; Big Boy, chaîne de restaurant américaine ; Big Boy, film… …   Wikipédia en Français

  • big boy —    This has something of the meaning of ‘big shot’, but the ‘big’ often takes on sexual innuendo and is meant to be flattering. Typical usage of this term would be by a prostitute to a prospective client. ‘Big Boy, Big Boy, oh give me all you’ve… …   A dictionary of epithets and terms of address

  • big boy — noun : a man of prominence in some organization or field of endeavor * * * an articulated steam locomotive having a four wheeled front truck, one section of eight driving wheels, a second section of eight driving wheels, and a four wheeled rear… …   Useful english dictionary

  • big boy — noun a large object or person. Ive been dying to get behind the wheel of this big boy …   Wiktionary

  • Big Boy — You re a Big Boy Now    Comédie de Francis Ford Coppola, avec Peter Kastner, Elizabeth Hartman, Geraldine Page, Julie Harris.   Pays: États Unis   Date de sortie: 1967   Technique: couleurs   Durée: 1 h 36    Résumé    Un garçon tourmenté par une …   Dictionnaire mondial des Films

  • Big Boy (radio host) — Big Boy is a radio host currently heard on Los Angeles hip hop/R B station KPWR (Power 106) and Tijuana, Baja California, Mexico s Z90.3 every morning between 5 am and 10 am and hip hop/Rap station 106.7 Jamz out of Madison, Wisconsin in the… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”