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A driving wheel on a steam locomotive. On locomotives with side rods, including most steam and jackshaft locomotives, the driving wheels have weights to balance the weight of the coupling and connecting rods. [10][11] The crescent-shaped balance weight is clearly visible in the picture on the right.
For example: The drivers must include counterbalancing to offset the weight of the side rods. The diameter of the drivers affect the locomotives top speed and pulling ability. The driver diameter is used in the equation for tractive effort. The drivers are made of a "wheel" and a "tire".
In using the system, the French counted the axles, the Germans also counted the axles but used letters only for the driving axles instead of numbers and the Americans and British counted the number of wheels. This table shows how the classifications work.
on a steam locomotive include wheels, axles, eccentric crank, crank pins, and the big end of the main rod. All of this machinery has mass, and with only the weight of the side rods on them, the drive wheels would not be balanced. Much like an unbalanced load in a front loading washer, the wheel would bounce with each rotation with the
Driving Wheels are those that actually move the locomotive through either motors (Diesel / Electric Locomotives) or pistons and rods (Steam Locomotives). With the latter, they more often than not sit centrally underneath the boiler and are larger than other unpowered wheels surrounding them.
4-8-8-4 Steam Locomotive. The 4-8-8-4 steam locomotive has four leading wheels, two sets of eight driving wheels, and four trailing wheels. They were designed to haul heavy freight in mountainous regions. This locomotive had hinged frames to allow them to negotiate curves.
People also ask
How do steam locomotives distribute weight?
How many types of wheels do steam locomotives have?
How many driving wheels did a locomotive have?
How does the size of a driver affect a locomotive's top speed?
How many wheels does a 4-8-8-4 steam locomotive have?
How do you identify a steam locomotive?
Geared steam locomotives such as Shays, Heislers, and Climaxes do not have a standard wheel arrangement classification system. Instead of being classified by wheel arrangement, they are instead classified by their design and their number of trucks .
