Quote:
Originally Posted by Blackdog_kt
For example, there would be no reason whatsoever to trim a Spitfire's ailerons for +16lbs or something like that which could be held for less than a minute, they would probably trim it for something like +8/+9 lbs of boost which was actually what the engine could do indefinitely without overheating or damage.
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I quite agree. That is why I suggested setting trim to max
cruise speed (which I guess correspond to +8/+9 lbs of boost). The very top speed any plane can reach is quickly bled off when one start to turn to aim anyway, I would think the +8/+9 lbs boost speed would make an appropriate compromise. 170 mph is a bit on the slow side though.
Helofly, what do you mean by cruise speed? Fuel economy fuels speed or max cruise speed? I think this difference is the crux of the matter.