How did you determine your Oswald?
Great info, showing that turnaround and altitude loss is much less when flying slower.
To which I would add, to do this safely under stress, one would elimate the 'sweat' if watching an AOA vane.

Terrence

  From: Paul Lipps
  45 deg. turn at equal parasite and induced drag, 123 mph IAS, ROD 2300 ft./min., turn rad. 779', 13.6 sec. / 180 deg., altitude loss 519' / 180 deg.

  45 deg. turn at 76%, 94 mph IAS, ROD 2020 ft./min., 318' turn radius, 7.3 sec., altitude loss 244' / 180 deg

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