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14 relations: Dieselisation, Duplex locomotive, Engine power, List of largest locomotives, Pennsylvania Railroad 5550, Pennsylvania Railroad class Q1, Pennsylvania Railroad locomotive classification, Power-to-weight ratio, Q2, Steam locomotive, Tractive force, Whyte notation, 2-6-6-6, 4-4-6-4.
Dieselisation
Dieselisation or dieselization is a term generally used for the increasingly common use of diesel fuel in vehicles, or known to be said "Rise of diesel power" as opposed to gasoline or steam engines.
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Duplex locomotive
A duplex locomotive is a steam locomotive that divides the driving force on its wheels by using two pairs of cylinders rigidly mounted to a single locomotive frame; it is not an articulated locomotive.
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Engine power
Engine power or horsepower is the maximum power that an engine can put out.
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List of largest locomotives
As railroads around the world haul larger quantities of freight efficiently, the title of world's largest locomotive has often been passed to new generations of rolling stock.
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Pennsylvania Railroad 5550
Pennsylvania Railroad 5550 is a mainline duplex drive steam locomotive currently under construction in the United States of America.
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Pennsylvania Railroad class Q1
The Pennsylvania Railroad's class Q1 comprised a single experimental steam locomotive for freight service, #6130.
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Pennsylvania Railroad locomotive classification
Locomotive classification on the Pennsylvania Railroad took several forms.
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Power-to-weight ratio
Power-to-weight ratio (or specific power or power-to-mass ratio) is a calculation commonly applied to engines and mobile power sources to enable the comparison of one unit or design to another.
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Q2
Q2 or Q-2 may refer to.
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Steam locomotive
A steam locomotive is a type of railway locomotive that produces its pulling power through a steam engine.
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Tractive force
As used in mechanical engineering, the term tractive force can either refer to the total traction a vehicle exerts on a surface, or the amount of the total traction that is parallel to the direction of motion.
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Whyte notation
The Whyte notation for classifying steam locomotives by wheel arrangement was devised by Frederick Methvan Whyte, and came into use in the early twentieth century following a December 1900 editorial in American Engineer and Railroad Journal.
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2-6-6-6
The 2-6-6-6 (in Whyte notation) is an articulated locomotive type with 2 leading wheels, two sets of six driving wheels and six trailing wheels. Only two classes of the 2-6-6-6 type were built.
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4-4-6-4
A 4-4-6-4, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is one that has four leading wheels followed by four coupled driving wheels, a second set of six coupled driving wheels and four trailing wheels.
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References
[1] https://en.wikipedia.org/wiki/Pennsylvania_Railroad_class_Q2
