wnorth(at)sdccd.edu
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 Posted: Wed May 24, 2006 5:46 pm Post subject: Engine life |
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Excessive RPM or Pressure will catastrophically destroy any engine
eventually. But if you had to choose one over the other I would go for RPM
to get HP as that causes more cooling for the HP gained.
That said most Lycs and Continentals are rated for continuous HP at what's
listed in the TC. But there's no requirement or correlation to that power
setting and the suggested TBO.
Generally TBOs are based upon an average of 75% power with variations in RPM
throughout the testing. That doesn't mean the engine can't operate
continuously at max power, it just means that if you do this it probably
won't make TBO.
That said, changing the oil a lot and flying a lot are the two best things
you can do for your engine life as both remove or prevent moisture. Moisture
causes micro pits which does the most of anything to wear out your engine.
And that is straight out of about nine different aviation engine
manufacturer and aviation oil manufacturer reps mouths over the years.
So, go fly further or more often at 75% power for the same cost as flying
less at 100% power and have more fun making sure your engine doesn't wear
out.
It's kinda like a sale, spend money to save money....
;{)
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