On Apr 27, 6:04*am, wrote:
* * * * Lots of people had the impression you were talking about the
dreaded downwind turn, with all the talk about the energy required to
accelerate to maintain airspeed. The energy required, as pointed out
in a much earlier post with several very good references, is so tiny
that it's not worth fooling with at all.

Perhaps you could put a number on that? Could you try a gliding turn
with stopwatch and altimeter and compare that to a straight glide?

Cheers