A pinon drive system with two, four ad even six independent motors and gear boxes. A wind turbine will tend to center it's self down wind and sometimes upwind even without a tail fin. The mechanical drive is vital as it allows the wind turbine to be turned cross wind to save the uit. If the blade feathering, mian shaft brake fails or a gearbox/coupling failure. There is a scary youtube video of a Vestas unit that did not have regular service and inspection. It failed to feather, tripped the generator on high current. Then tried to slow and stop with the friction brake after it failed to rotate cross wind.
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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