Driving Wheels

Driving Wheels
The powered wheels of a locomotive. The large wheels of a steam locomotive connected by rods and the motorized wheels on electric or diesel locomotives.
Drone
See Slug.

Driving wheels without flanges which permit locomotives to negotiate sharper curves than the wheel arrangement would normally allow; widely used on narrow gauge locomotives.
Blind Siding ...

Driving wheels
The powered wheels on a steam engine, coupled through to the pistons and whatnot. As opposed to the usually smaller pony wheels, which just roll along.

Driving Wheels
The large wheels of a steam locomotive connected by rods. And the motorized wheels on electric or diesel locomotives.
Drone Cage ...

Driving Wheels
The powered wheels of a locomotive.
Drovers' Caboose
A long, eight-wheel caboose which contains a small passenger compartment for hauling and bedding down cattleman who are aboard to care for their cattle en route.

These couple driving wheels of the same size together to spread the tractive effort over the coupled wheelbase.
Coupé ...

Generally, the more driving wheels an engine has the more powerful it is, and for steam locomotives, the more wheels in the trailing truck, the larger the firebox.

The sand is carried on the locomotive in a sandbox and is ejected, normally under air pressure, onto rails immediately in front of the driving wheels to assist adhesion. It is usually operated by a push button in the driving cab.

Direct Drive - A system of power transmission in which there is a direct connection between the engine or motor and the driving wheels.

The most extreme outcome of this was the Crampton locomotive which mounted the driving wheels behind the firebox and could be made very large in diameter. These achieved the hitherto unheard of speed of 70mph but were very prone to wheelslip.

All steam locomotives have driving wheels. They are connected by a rod to the piston. Driving wheels are where the power comes through. Drivers are usually large and tend to be spoked.

A steam locomotive with two sets of driving wheels under a single boiler. Articulated locomotives have wheels arrangements such as 2-8-8-4 or 4-6-6-4.

Steam locomotives have large driving wheels, each of which is expensive and hard to repair. To preserve the wheels, locomotives use steel tires.

These rods convert the linear motion of the piston to the circular motion of the driving wheels.

Devices operated by air for applying sand to the rail in front of or behind the driving wheels of the engine.
Scale House
Structure erected to house weight recording mechanism used in weighing freight cars.

See also: Engine, Locomotive, Diesel, Point, Track