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How many types of wheels do steam locomotives have?
How many driving wheels does a locomotive have?
Do all locomotives have leading or trailing wheels?
What is a driving wheel on a steam locomotive?
What was the average size of a steam-locomotive driving wheel?
How big is a freight locomotive?
Freight locomotives generally had driving wheels between 40 and 60 inches (1,016 and 1,524 mm) in diameter; dual-purpose locomotives generally between 60 and 70 inches (1,524 and 1,778 mm), and passenger locomotives between 70 and 100 inches (1,778 and 2,540 mm) or so.
Wheels used for road–rail vehicles are normally smaller than those found on other types of rolling stock, such as locomotives or carriages, because the wheel has to be stowed clear of the ground when the vehicle is in road-going mode. Such wheels can be as small as 245 mm (9.65 in) in diameter.
The three types of wheels: The first thing to recognise is that steam locomotives have three basic types of wheels; Leading Wheels, Driving Wheels and Trailing Wheels. All locomotives have Driving Wheels but not all have leading or trailing wheels.
There were four types of disc driving wheels for steam locomotves. Each was made by a different company and each varied slightly from the others in their appearance. The four types were: Boxpok Disc Drivers. Manufactured by General Steel Castings of Granite City, IL. Patent numbers US1960039 and US2042160. Scullin Disc Drivers.
Most normal, non-articulated 1 locomotives have up to three sets of wheels. They are: The leading truck: Small wheels at the front of the train. They do take some of the weight of the...
Wheels at the front of the locomotive [3]: 62 to guide the front driving wheels around curves, and minimise yawing at higher speeds with the attendant risk of derailment. The truck has some side motion and is equalised to the driving wheels (41).
The Rocket had only a single pair of driving wheels, but four coupled wheels soon became common, and eventually some locomotives were built with as many as 14 coupled drivers. Steam-locomotive driving wheels were of various sizes, usually larger for the faster passenger engines.
