On May 18, 3:25*pm, John Cochrane
wrote:
On May 18, 4:33*pm, "noel.wade" wrote:

All -

I've been flying with the assumption that flying slow in cloud-streets
is always a good idea. *

I disagree. It's always MacCready theory, if correctly interpreted.

Suppose the cloudstreet offers 2 knots up everywhere with occasional 8
knot cores. (Uvalde). Option 1: fly 50 knots without losing altitude.
You average 50 knots = 57 mph. Option 2: fly 85 knots, (I.e. cruise at
Mc 4 or so) , slowly losing, but stopping to thermal in the 8 knot
cores. You average 80 mph. (Typical uvalde winning speeds) The latter
is much faster. Reichmann offers the same advice.

John Cochrane

Agree!

Reichmann called Option 1 "Forced dolphin flight" if I remember
correctly.

Unfortunately this is what I most often do and I should stop.

David (GJ)