to have an auto shop install the hydraulics in their car for them. In the early 1960s, owners were left to do the mechanics for their own cars because the kits were not sold in stores until the later 1960s. These hydraulic kits were known as "trays" to many consumers. Many times, since these batteries, pumps and valves were made for such large aircraft originally, extra batteries were needed to assist in the hydraulics. This would run the batteries down more often than the original usage for these batteries, so it was necessary for the owners of these automobiles to charge the automobile's batteries more frequently. After using aircraft materials, trucks' liftgate materials were found to be more manageable on the car as well as easing the maintenance of the car. These cylinders, two or more, are connected to one pipe that is filled with oil, the basic fluid used for a hydraulic system. The cylinders are used to establish compression pressure of the oil, fluid being supplied by the pump, to push the automobile up. The motion of car is defined by the number of cylinder pumps installed in the vehicle. The number and placement of the pumps determines the range of motion the automobile has. A hydraulic dump valve called a "dump" is used to control the downward movement of the car. Advertisement Car Hydraulics are many times shown and advertised in the media. In the 1970s, many movies shot in east Hollywood became known for their lowrider automobiles with fancy hydraulics. Movies such as Up in Smoke and Chong's Classic were some of the few films featuring lowriders. Even in more recent films and media, these automobiles are being displayed. Demonstrated in 1998's Wrongfully Accused, Leslie Nielsen's character, Ryan Harrison, steals a car that has installed hydraulics. The movie displays the bounce given by certain hydraulic systems that are equipped in specific cars. In 2004, Snoop Dogg's music video, "Drop It Like It's Hot", featuring Pharrell, a 2004 Rolls-Royce Phantom is showing its installation hydraulics by tilting on the two left wheels, behind Snoop Dogg rapping. See also Automobile Custom car Hydraulics Lowrider Los Angeles References External links Lowrider Magazine Lowrider Magazine- Japan Super Show Auto parts Control devices