Posted by KIP in MX on December 04, 2011 at 13:22:08 from (190.213.18.249):
My weekend in Trindad, West Indies has been removing and installing a Pratt & Whitney Twin-Pac engine in a Bell 412. The power sections are 900 shp ea connected to a combining reduction gearbox dropping turbine rpm from 36,000 to 6600 at the output shaft to the helicopter's planetary transmission where rpm is further reduced to 324 rpm at the main rotor. Although the Twin-Pac has 1800 shp output, the transmission is limited to 1400. Cost for the complete Twin-Pac is close to 1 million US.
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that’s wha
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