| Chris,
there are some countries in europe where the "factory approved" weight increase to 810kg is approved. But the authorities of this countries will not share any details. Landing weight will stay at 765kg. My rate of climb is more than good. At 10.000ft I still see 1000ft/min. Stallspeed does not have to be the required 61kt in austria. I actually have 62kt in my handbook. But I did not test to a full stall 1 or 2 kt lower would be the real stall speed... The plane is certified to CS/VLA (prior JAR/VLA) I hope this details help.
I will make some more flights with 0° , -5° and -7° to see the difference in speed. I will also check the position of my elevator. My incidence of the horizontal is -0.6° and I discovered that my elevator is not in trail during cruise. I just can't remember if up or down... As soon as I get this data, I will post it here. After this I can play with more reflex to find out if there is a difference.
Christian
Christian, Does your aviation authority have any specific requirements for landing gear, climb rates, or stall speed? The airframe was designed with margins, but would take a good understanding of your local regulations to know how to advise you on increasing gross weight.
As to flaps, it would be interesting to see what you get if you were to sweep through flap settings beyond -7 degrees. The lower your lift coefficient is, the more it will favor additional reflex.
Chris Zavatson N91CZ 360std
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