Quote: JimR
In my 201 with no wind and at my normal ROP power settings, I could cover 630 nm in four hours with minimal VFR reserves and approximately a 650 pound payload. Covering that extra 40 nm in four hours would require 10 knots more airspeed than I usually get, which would necesitate a lower altitude and thereby higher power setting. With 150 pounds of fuel to spare, however, I suspect that it would be possible for me to pick up those extra knots, but not practical. There are faster (ie aerodynamically cleaner) 201s than mine out there, though. Interesting hypothetical.