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Where's the difference? The engine still can not last over 5 minutes even during level flight.
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Did you look at the track I sent you?
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3. Exactly because of their rather rough nature they are more rugged.
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Sorry, but I can't see your logic here.
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Think AK-47.
Lower tolerances means parts can actually expand a bit with the heat before they start rubbing together in a bad way.
Thanks PapaFly, for the test.