Well Mike, I do not have a PA-28-181 POH handy so I checked my old PA-32-300
At sea level, At Max GW
Normal take off, 10degree flap setting, Ground Roll, 1050ft, 50ft clearance
1500ft
Short Field take off, 25degree flap setting, Ground Roll, 950ft, 50ft
clearance, 1400ft.

Say again?

BT

"Mike Rapoport" wrote in message
ink.net...
The problem with this logic is that the 50' obstical distance is genarally
greater with the short field flap setting. Only the ground run is
shorter.

Mike
MU-2