Seen alone or in groups wherever oil is found, Walthers Cornerstone Walking Beam-Horse-Head Oil Pump kit is a great way to model a part of this vital industry anywhere on your N Scale layout. Finding oil is hard work - and so is getting it out of the ground. If the oil is thin enough and there's enough underground pressure, it may flow into the well on its own. This may continue for a few hours or a few years, but in time, the pressure drops. Today, nearly 95% of all US oil wells require pumps to stay in production and one of the most common is the walking beam or horse head.
 
The walking beam oil pump is typical of North American designs in use since the 1920s. It includes a detailed stationary diesel power plant, walking beam, rear crank and counterweight, along with the odd-shaped "horse head" front counterweight that gives the machines their nickname. Designed from the ground up to be a working model, the kit includes provisions for a hidden drive with the motor under your layout surface. Whenever you're ready, just add the Universal Gearbox and Motor Drive Kit 933-1050, sold separately, to power your pump. Complete instructions and precise engineering produce a great looking, easy to build replica. As shown the Walking Beam-Horse-Head Oil Pump measures: 2-3/4 x 1 x 1-13/16" 6.8 x 2.5 x 4.5cm The Walking Beam-Horse-Head Oil Pump is just one of a wide variety of Cornerstone N Scale