Both use similar compression ratios, similar RPM red-lines, and similarpower-to-displacement ratios. Both use fixed-timed dual magneto ignition systems,and valve trains with overhead rocker arms, shrouded hollow pushrods, and hydraulic valvelifters. Both are horizontally-opposed air-cooled designswith bolt-together aluminum case halves and bolt-on cylinders with sandcast aluminum headsscrewed onto nitrided steel barrels. Lycoming and TCM engines are very similar designs usingvery similar technology and metallurgy. They brashly state "I’d never own a Continental-poweredairplane!" If you ask why, they’ll tell you a series of anecdotal episodes about howtheir Lycoming-powered Turbo Saratoga made it to 1,000 hours past TBO, while their bestfriend wound up having to tear down the TCM factory reman in his Mooney 231 or Beech B36TCafter just 475 hours. It’s equally unsurprising that at least half the pilots and aircraft owners I meet areLycoming bigots.
0 kommentar(er)
