well, a full size P-40 has a wing load of 35lbs/sq.ft. and weighs around 8000lbs empty.
it can land at 90mph with full flap. scale it to 1:7 andthe weight is approx 23lbs with a
landing approach of 12mph. 1:7 is about 65" span. now becouse you can't scale gravity,
figure an extra 2% increase in speed. so if its a true scale.. there should be no problem
landing at those speeds. just my 2cents.. and no I'm not gonna argue this point with
whoever. math is math.